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impala linear corporation 1 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 the ilc7082 is a 150ma low dropout (ldo) voltage regu- lator designed to provide a high performance solution to low power systems. the device offers a typical combina- tion of low dropout and low quiescent current expected of cmos parts, while uniquely providing the low noise and high ripple rejection characteristics usually only associated with bipolar ldo regulators. the device has been optimized to meet the needs of mod- ern wireless communications design; low noise, low dropout, small size, high peak current, high noise immunity. the ilc7082 is designed to make use of low cost ceramic capacitors while outperforming other devices that require tantalum capacitors. ? ultra low 1mv dropout per 1ma load ? 1% output voltage accuracy ? only 30mv rms noise ? uses low esr ceramic output capacitor to minimize noise and output ripple ? only 100 a ground current at 100ma load ? ripple rejection up to 85db at 1khz, 60db at 1mhz ? excellent line and load transient response ? over current / over temperature protection ? guaranteed to 150ma output current ? industry standard five lead sot-23 package ? fixed 2.8v, 3.0v, 3.3v, 3.6v, 4.7v, 5.0v and adjustable output voltage options ? metal mask option available for custom voltages between 2.5v and 10v ? cellular phones ? wireless communicators ? pdas / palmtops / organizers ? battery powered portable electronics ilc7082 5 4 12 3 on off sot-23-5 v out v in c in c out c noise ordering information (ta = -40c to +85c) ilc7082aim5-xx ilc7082aim5-adj ilc7082aik-xx 150ma 150ma, fixed voltage 150ma, adjustable voltage fixed voltage (soic-8) ilc7082 150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation general description features applications typical circuit
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 2 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 pin number pin name pin description 1 v in connect directly to supply 2 gnd ground pin 3 on/off by applying less than 0.4v to this pin the device will be turned off 4 c noise optional noise bypass capacitor may be connected between this pin and the gnd (pin 2). do not connect c noise directly to the main power ground plane. 5 v out output voltage. connect c out between this pin and the gnd (pin 2). pin number pin name pin description 1 v in connect directly to supply 2 gnd ground pin. local ground for c noise and c out . 3 on/off by applying less than 0.4v to this pin the device will be turned off 4 v adj voltage feedback pin to set the adjustable o utput voltage. do not connect a capacitor to this pin. 5 v out output voltage. connect c out between this pin and the gnd (pin 2). pin number pin name pin description 1 gnd connect directly to supply 2 on/off ground pin. local ground for c noise and c out . 3 v in connect directly to supply 4 n/c no connection 5 n/c no connection 6 v out output voltage. connect c out between this pi n and gnd (pin 2) 7 n/c no connection 8 n/c no connection fixed voltage option adjustable voltage option pin description ilc7082-xx (fixed voltage version) pin description ilc7082-aik-xx (soic fixed voltage version) pin description ilc7082-adj (adjutable voltage version) pin package configurations
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 3 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 parameter symbol ratings units input voltage on/off input voltage v in v on/off -0.3 to +13.5 -0.3 to vin v output current i out short circuit protected ma output voltage v out -0.3 to vin+0.3 v package power dissipation (sot-23-5) p d 250 (internally limited) mw maximum junction temp range t j(max) -40~+150 o c storage temperature t stg -40~+125 o c operating ambient temperature t a -40 to +85 o c package thermal resistance ja 333 o c/w parameter symbol conditions min typ max units input voltage range v in 2 13 v i out = 1ma - 1 v out ( nom ) +1 1ma < i out < 100ma 1ma < i out < 100ma - 1.5 - 2.5 v out ( nom ) +1.5 +2.5 output voltage v out 1ma < i out < 150ma 1ma < i out < 150m a - 2.5 - 3.5 v out ( nom ) +2.5 +3.5 %v out ( nom ) feedback voltage (adj version) v adj 1.215 1.202 1.265 1.278 v line regulation ! v out (v out * ! v out ) v out ( nom )+1v < v in < 12v 0.007 0.014 0.032 %/v i out = 0ma (note 4) 0.1 1 2 i out = 10ma 10 25 35 i out = 50ma 50 75 100 i out = 100ma 100 150 200 dropout voltage (note 3) " " v in - v out i out = 150ma 150 225 300 mv unless otherwise specified. all limits are at t a = 25c, v in = v out(nom) +1v, i out = 1ma, c out = 1 f, v on/off = 2v boldface limits apply over the operating temperature range. (note 2) absolute maximum ratings (note 1) electrical characteristics ilc7082aim5
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 4 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 parameter symbol conditions min typ max units i out = 0ma 95 200 220 i out = 1ma 100 220 240 1ma < i out < 100ma 100 220 240 1ma < i out < 150ma 100 240 260 ground pin current i gnd 1ma < i out < 150ma 115 260 280 a shutdown (off) current i on/off v on/off = 0 v 0.1 2 a on/off input voltage v on/off high = regulator on low = regulator off 1.5 13 0.06 on/off pin input current (note 5) i in (on/off) v on/off = 0.6v, regulator off v on/off = 2v, refulator on 0.3 1 a peak output current (note 4) i out(peak) v out > 0.95v out ( nom ), t pw =2ms 400 500 ma output noise voltage (rms) e n bw = 300hz to 50khz, c in = 1 f c noise = 0.01 f, c out = 2.2 f, i out = 10 m a 30 v rms freq = 1khz 85 freq = 10khz 70 ripple rejection " ! v out / ! v in c out = 4.7 f, i out = 100 m a freq = 1mhz 60 db dynamic line regulation " " ! v out (line) v in : v out ( nom ) + 1v to v out ( nom ) + 2v, tr/tf = 2ms; i out = 150 m a 14 mv dynamic load regulation ! v out(load) i out : 1ma to 150ma; tr < 5 s 40 mv short circuit current i sc v out = 0v 600 ma unless otherwise specified. all limits are at t a = 25c, v in = v out(nom) +1v, i out = 1ma, c out = 1 f, v on/off = 2v boldface limits apply over the operating temperature range. (note 2) note 1: absolute maximum ratings indicate limits which when exceeded may result in damage to the component. electrical specific ations do not apply when operating the device outside of its rated operating conditions. note 2: specified min/max limits are production tested or guaranteed through correlation based on statistical control methods. measurements are taken at constant junction temperature as close to ambient as possible using low duty pulse testing. note 3: dropout voltage is defined as the input to output differential voltage at which the output voltage drops 2% below the nominal value measured with an iv differential. note 4: guaranteed by design note5 : the device?s shutdown pin includes a 2m ? internal pulldown resistor connected to ground. electrical characteristics ilc7082aim5 (continued)
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 5 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 operation the ilc7082 ldo design is based on an advanced circuit configuration for which patent protection has been applied. typically it is very difficult to drive a capacitive output with an amplifier. the output capacitance produces a pole in the feedback path, which upsets the carefully tailored dominant pole of the internal amplifier. traditionally the pole of the output capacitor has been ?eliminated? by reducing the out- put impedance of the regulator such that the pole of the output capacitor is moved well beyond the gain bandwidth product of the regulator. in practice, this is difficult to do and still maintain high frequency operation. typically the output impedance of the regulator is not simply resistive, such that the reactive output impedance interacts with the reactive impedance of the load resistance and capacitance. in addi- tion, it is necessary to place the dominant pole of the circuit at a sufficiently low frequency such that the gain of the reg- ulator has fallen below unity before any of the complex interactions between the output and the load occur. the ilc7082 does not try to eliminate the output pole, but incor- porates it into the stability scheme. the load and output capacitor forms a pole, which rolls off the gain of the regu- lator below unity. in order to do this the output impedance of the regulator must be high, looking like a current source. the output stage of the regulator becomes a transconduc- tance amplifier, which converts a voltage to a current with a substantial output impedance. the circuit which drives the transconductance amplifier is the error amplifier, which compares the regulator output to the band gap reference and produces an error voltage as the input to the transcon- ductance amplifier. the error amplifier has a dominant pole at low frequency and a ?zero? which cancels out the effects of the pole. the zero allows the regulator to have gain out to the frequency where the output pole continues to reduce the gain to unity. the configuration of the poles and zero are shown in figure 1. instead of powering the critical circuits from the unregulated input voltage, the cmos rf ldo powers the internal circuits such as the bandgap, the error amplifier and most of the transconductance amplifier from the boot strapped regulated output voltage of the regulator. this technique offers extremely high ripple rejection and excellent line transient response. a block diagram of the regulator circuit used in the ilc7082 is shown in figure 2 (following page), which shows the input- to-output isolation and the cascaded sequence of amplifiers that implement the pole-zero scheme outlined above. the ilc7082 is designed in a cmos process with some minor additions, which allow the circuit to be used at input voltages up to 13v. the resulting circuit exceeds the fre- quency response of traditional bipolar circuits. the ilc7082 is very tolerant of output load conditions with the inclusion of both short circuit and thermal overload protection. the device has a very low dropout voltage, typically a linear response of 1mv per milliamp of load current, and none of the quasi-saturation characteristics of a bipolar output devices. all the good features of the frequency response and regulation are valid right to the point where the regula- tor goes out of regulation in a 4 millivolt transition region. because there is no base drive, the regulator is capable of providing high current surges while remaining in regulation. this is shown in the high peak current of 500ma which allows for the ilc7082 to be used in systems that require short burst mode operation. electrical characteristics ilc7082aim5 (continued) figure 1: ilc7082 rf ldo frequency response on/off gnd v out v in c noise feedback bandgap reference v refd error amplifier trans- conductance amplifier internal v dd figure 2: ilc7082 rf ldo regulator block diagram
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 6 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 shutdown (on/off) operation the ilc7082 output can be turned off by applying 0.4v or less to the device?s on/off pin (pin 3). in shutdown mode, the ilc7082 draws less than 1ma quiescent current. the output of the ilc7081 is enabled by applying 1.5v to 13v at the on/off pin. in applications were the ilc7082 output will always remain enabled, the on/off pin may be con- nected to v in (pin 1). the ilc7082?s shutdown circuitry includes hysteresis, as such the device will operate proper- ly even if a slow moving signal is applied to the on/off pin. the device?s shutdown pin includes a 2mw internal pull down resistor connected to ground. short circuit protection the ilc7082 output can withstand momentary short circuit to ground. moreover, the regulator can deliver very high out- put peak current due to its 1a instantaneous short circuit current capability. thermal protection the ilc7082 also includes a thermal protection circuit which shuts down the regulator when die temperature exceeds 170c due to overheating. in thermal shutdown, once the die temperature cools to below 160c, the regula- tor is enabled. if the die temperature is excessive due to high package power dissipation, the regulator?s thermal cir- cuit will continue to pulse the regulator on and off. this is called thermal cycling. excessively high die temperature may occur due to high dif- ferential voltage across the regulator or high load current or high ambient temperature or a combination of all three. thermal protection protects the regulator from such fault conditions and is a necessary requirement in today?s designs. in normal operation, the die temperature should be limited to under 150c. adjustable output voltage figure 5 shows how an adjustable output voltage can be easily achieved using ilc7082-adj. the output voltage, v out is given by the following equation: v out = 1.24v x (r1/r2 + 1) for best results, a resistor value of 470kw or less may be used for r2. the output voltage can be programmed from 2.5v to 12v. note that an external capacitor should not be connect- ed to the adjustable feedback pin (pin 4). connecting an external capacitor to pin 4 may cause regulator instability and lead to oscillations. maximum output current the maximum output current available from the ilc7082 is limited by the maximum package power dissipation as well as the device?s internal current limit. for a given ambient temperature, t a , the maximum package power dissipation is given by: p d(max) = (t j(max) - t a ) / ja where t j(max) = 150c is the maximum junction temperature and ja = 333c/w is the package thermal resistance. for example at t a = 85c ambient temperature, the maximum package power dissipation is; p d(max) = 195mw. the maximum output current can be calculated from the fol- lowing equation: i out(max) < p d(max) / (v in - v out ) for example at v in = 6v, v out = 5v and t a = 85c, the max- imum output current is i out(max) < 195ma. at higher output current, the die temperature will rise and cause the thermal protection circuit to be enabled. application hints figure 4 shows the typical application circuit for the ilc7082. ilc7082-adj v out v in c out sot23-5 c in r1 r2 on off 123 4 5 v adj fig. 3: application circuit for adjustable output voltage electrical characteristics ilc7082aim5 (continued) ilc7082 v out v in c out sot23-5 c in on off 123 4 5 c noise figure 4: basic application circuit for fixed output voltage versions
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 7 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 input capacitor an input capacitor c in of value 1 f or larger should be con- nected from v in to the main ground plane. this will help to filter supply noise from entering the ldo. the input capaci- tor should be connected as close to the ldo regulator input pin as is practical. using a high-value input capacitor will offer superior line transient response as well as better pow- er supply ripple rejection. a ceramic or tantalum capacitor may be used at the input of the ldo regulator. note that there is a parasitic diode from the ldo regulator output to the input. if the input voltage swings below the reg- ulator?s output voltage by a couple of hundred milivolts then the regulator may be damaged. this condition must be avoided. in many applications a large value input capacitor, c in , will hold v in higher than v out and decay slower than v out when the ldo is powered off. output capacitor selection impala strongly recommends the use of low esr (equiva- lent series resistance) ceramic capacitors for c out and c noise the ilc7082 is stable with low esr capacitor (as low as zero ? ). the value of the output capacitor should be 1 f or higher. either ceramic chip or a tantalum capacitor may be used at the output. use of ceramic chip capacitors offer significant advantages over tantalum capacitors. a ceramic capacitor is typically cheaper than a tantalum capacitor, it usually has a smaller footprint, lower height, and lighter weight than a tantalum capacitor. furthermore, unlike tantalum capacitors which are polarized and can be damaged if connected incorrectly, ceramic capacitors are non-polarized. low value ceramic chip capacitors with x5r or x7r dielectric are available in the 100pf to 4.7mf range. beware of using ceramic capaci- tors with y5v dielectric since their esr increases significant- ly at cold temperatures. figure 12 shows a list of recom- mended ceramic capacitors for use at the output of ilc7082. note: if a tantalum output capacitor is used then for stable operation impala recommends a low esr tantalum capaci- tor with maximum rated esr at or below 0.4w. low esr tantalum capacitors, such as the tps series from avx corporation (www.avxcorp.com) or the t495 series from kemet (www.kemet.com) may be used. in applications where a high output surge current can be expect- ed, use a high value but low esr output capacitor for superior load transient response. the ilc7082 is stable with no load. noise bypass capacitor in low noise applications, the self noise of the ilc7082 can be decreased further by connecting a capacitor from the noise bypass pin (pin 4) to ground (pin 2). the noise bypass pin is a high impedance node as such care should be taken in printed circuit board layout to avoid noise pick-up from external sources. moreover, the noise bypass capacitor should have low leakage. noise bypass capacitors with a value as low as 470pf may be used. however, for optimum performance, use a 0.01mf or larger, ceramic chip capacitor. note that the turn on and turn off response of the ilc7082 is inversely proportional to the value of the noise bypass capacitor. for fast turn on and turn off, use a small value noise bypass capacitor. in appli- cations were exceptionally low output noise is not required, consider omitting the noise bypass capacitor altogether. the effects of esr (equivalent series resistance) the esr of a capacitor is a measure of the resistance due to the leads and the internal connections of the component. typically measured in m ? (milli-ohms) it can increase to ohms in some cases. wherever there is a combination of resistance and current, voltages will be present. the control functions of ldos use two voltages in order to maintain the output precisely; v out and v ref . with reference to the block diagram in figure 4, v out is fed back to the error amplifier and is used as the supply voltage for the internal components of the ilc7082. so any change in v out will cause the error amplifier to try to compensate to maintain v out at the set level and noise on v out will be reflected into the supply of each internal components of the ilc7082. so any change in v out will cause the error ampli- fier to try to compensate to maintain v out at the set level and noise on v out will be reflected into the supply of each inter- nal circuit. the reference voltage, v ref , is influenced by the c noise pin. noise into this pin will add to the reference volt- age and be fed through the circuit. these factors will not cause a problem if some simple steps are taken. figure 5 shows where these added esr resistances are present in the typical ldo circuit. with this in mind low esr components will offer better per- formance where the ldo may be subjected to large load transients current. esr is less of a problem with c in as the voltage fluctuations at the input will be filtered by the ldo. ilc7082 v in sot-23-5 c in on off 123 4 5 c noise rf ldo tm regulator r* r* r c v out c out i c i out figure 5: esr present in c out and c noise
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 8 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 however, being aware of these current flows, there is also another potential source of induced voltage noise from the resistance inherent in the pcb trace. figure 6 shows where the additive resistance of the pcb can manifest itself. again these resistances may be very small, but a summation of several currents can develop detectable voltage ripple and will be amplified by the ldo. particularly the accumulation of current flows in the ground plane can develop significant voltages unless care is taken. with a degree of care, the ilc7082 will yield outstanding performance. printed circuit board layout guidelines as was mentioned in the previous section, to take full advantage of any high performance ldo regulator requires paying careful attention to grounding and printed circuit board (pcb) layout. figure 7 shows the effects of poor grounding and pcb lay- out magnified by the esr and pcb resistances and the accumulation of current flows. note thatparticularly during high output load current, the ldo regulator?s ground pin and the ground return for c out and c noise are not at the same potential as the system ground. this is due to high frequency impedance caused by pcb?s trace inductance and dc resistance. the current loop between c out , c noise and the ldo regulator?s ground pin will degrade performance of the ldo. figure 8 shows an optimum schematic. in this schematic, high output surge current has little effect on the ground cur- rent and noise bypass current return of the ldo regulator. note that the key difference here is that c out and c noise are directly connected to the ldo regulator?s ground pin. the ldo is then separately connected to the main ground plane and returned to a single point system ground. the layout of the ldo and its external components are also based on some simple rules to minimize emi and output voltage ripple. ilc7082 sot-23-5 on off 123 4 5 c noise r pcb esr r pcb v in c in i out c out i 1 esr v out r pcb r pcb figure 6: inherent pcb resistance figure 7: effects of poor circuit layout
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 9 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 grounding recommendations 1. connect c in between v in of the ilc7082 and the ?ground plane?. 2. keep the ground side of c out and c noise connected to the ?local ground? and not directly to the ?ground plane?. 3. on multilayer boards use component side copper for grounding around the ilc7082 and connect back to a ?ground plane? using vias. 4. if using a dc-dc converter in your design, use a star grounding system with separate traces for the power ground and the control signals. the star should radiate from where the power supply enters the pcb. layout considerations 1. place all rf ldo related components; ilc7082, input capacitor c in , noise bypass capacitor c noise and output capacitor c out as close together as possible. 2. keep the output capacitor c out as close to the ilc7082 as possible with very short traces to the v out and gnd pins. 3. the traces for the related components; ilc7082, input capacitor c in , noise bypass capacitor c noise and output capacitor c out can be run with minimum trace widths close to the ldo. 4. maintain a separate ?local ground? remote from the ?ground plane? to ensure a quiet ground near the ldo. figure 9 shows how this circuit can be translated into a pcb layout. figure 9: recommended application circuit layout ( not drawn to scale) note, ground plane is bottom layer of pcb and connects to top layer ground connections through vias. pin number pin name manufacturer description u1 ilc7082aim5-30 impala linear 150ma rf ldo tm regulator j1 69190-405 berg connector, four position header cin grm40 y5v 105z16 murata ceramic capacitor, 1 f,16v,smt (size 0805) cnoise ecu-v1h103kbv panasonic ceramic capacitor, 0.01 f,16v,smt (size 0603) cout grm42-6x5r475k10 murata ceramic capacitor, 4.7 f16v,smt (size 1206) figure 8: recommended application circuit schematic . evaluation board parts list for printed circuit board shown above
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 10 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 c out capacitor size i out dielectric part number capacitor vendor 1 f 0805 0-150 ma x5r c2012x5r1a105kt tdk ? 0805 ? x7r grm40x7r105k010 murata ? 0805 ? x7r lmk212bj105kg taiyo-yuden ? 1206 ? x7r grm42-6x7r105k016 murata ? 1206 ? x7r emk316bj105kl taiyo-yuden ? 1206 ? x5r tmk316bj105kl taiyo-yuden 2.2 f 0805 0-150 ma x5r grm40x5r225k 6.3 murata ? 0805 ? x5r c2012x5r0j225kt tdk 1206 ? x5r emk316bj225ml taiyo-yuden 4.7 f 1206 0-150 ma x5r grm42-6x7r475k010 murata ? 1206 ? x7r lmk316bj475ml taiyo-yuden recommended ceramic output capacitors
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 11 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 temperature (c) d ropout vo lta ge vs tempera ture dropout voltage (mv) temperature (c) 250 200 150 100 50 0 ?40 85 25 v ou t = 3.0v i out = 150ma i out = 100ma i out = 50ma i out = 0ma dropout characteristics v in (v) 3.4 3.3 3.2 3.1 3 v ou t (v) c out = 1f (ceramic) v out = 3.3v 3 3.2 3.4 3.6 i out = 0ma i out = 10ma i out = 50ma i out = 100ma i out = 150ma 250 200 150 100 50 0 0 50 100 150 dropo ut vol tag e v s i ou t dropout voltage (mv) output current (ma) t a = ?40c t a = 85c t a = 25c v ou t = 3.0v 150 125 100 75 50 2 4 6 8 10 12 14 ground current vs input voltage v out = 3.0 v c out = 1f (ceramic) i ou t = 150ma i out = 100ma i ou t = 50ma i out = 10ma i out = 0ma v in (v) i gn d (a) line transient response 5s /di v v in (v) v out (v) 6 5 4 3.01 3.00 2.99 2.98 v in : tr/t f < 1 s v out = 3.0v c out = 2.2 f (ceramic) i out = 100 ma output voltage vs temperature 3.015 3.01 3.005 3 2.995 2.99 output voltage (v) c out = 1f (c er am ic) v out = 3.0v 2.985 temperature (c) 0 50 100 150 -50 unless otherwise specified t a t=25c, v in =v out(nom) , + 1v, on/off pin tied to v in typical performance characteristics
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 12 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 load transient response 100s/div 3.15 3.10 3.05 3.00 2.95 100 1 v ou t (v) i out (ma) c out = 1 f || 0.47 f (ceramic) v out = 3.0v short circuit current 5ms/div i sc (a) 1.5 1.0 0 v in = 4v 0.5 output shorted to gnd at time, t = 0 t = 0 thermal c ycli ng on/off transient response 100s/div v out (v) v ou t = 2.8v i out = 10ma 15 10 5 0 3 2 1 0 c out = 1f without c no is e capacitor v on/off (v) on/off transient response 100s/div v out (v) v out = 2.8v i out = 150ma 15 10 5 0 3 2 1 0 c out = 1f without c no is e capacitor v on/off (v) on/off transient response 5ms/div v out (v) 15 10 5 0 3 2 1 0 v on /of f (v) v out = 2.8v i out = 150ma c noise = 0.01f, c out = 1 f c no ise = 0.01f, c ou t = 1 f on/off transient response 5ms/div v out (v) v ou t = 2.8v i ou t = 10ma 15 10 5 0 3 2 1 0 v on /of f (v) unless otherwise specified t a t=25c, v in =v out(nom) , + 1v, on/off pin tied to v in typical performance characteristics
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 13 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 120 100 80 60 40 20 0 spectral noise density frequency (hz) 10 1 0.1 n oi se (v/ rt hz) 10k 1m 1k 100 10 0.01 0.001 v ou t = 2.8v 10m i ou t = 50ma c noise = 0.01f c out = 10f (ceramic) c out = 2.2f or 4.7f (ceramic) c out = 1f (ceramic) 100k spectral noise density frequency (hz) 10 1 0.1 noise (v/rt hz) 10k 100k 1k 100 10 0.01 0.001 v out = 2.8v 1m c out = 2.2 f c noise = 0.01f i out = 1 ma i out = 50ma, 100ma or 150 ma output no is e vol tag e vs . c noise freq band no is e (vrms ) 60 50 30 20 10 0 40 90 80 70 100 hz? 50 khz 100 hz? 100 khz 300 hz? 50 khz 300 hz? 100 khz v out = 3v i out = 10ma c out = 2.2f (cer amic) c noise = 1.2nf 5.6nf 0.047f 0.039f 8.2nf 0.022f 0.01f output noise voltage vs. c noise freq band no is e (vrms ) 60 50 30 20 10 0 40 90 80 70 100 hz? 50 khz 100 hz? 100 khz 300 hz? 50 khz 300 hz? 100 khz v out = 3v i out = 10ma c out = 4.7f (ceramic ) c noise = 1.2nf 5.6nf 0.047f 0.039f 0.022f 0.016f 8.2nf ripple rejection vs. frequency 80 60 40 ripple rejection (db) 10k 1m 1k 100 10 20 0 v ou t = 2.8v i ou t = 150ma 100k ripple rejection vs. frequency ripple rejection (db) 10k 1m 1k 100 10 v out = 3v 10m i out = 10ma c out = 1f 100k c out = 10f c out = 4.7f c ou t = 2.2f 70 50 30 10 c out = 1f c out = 2.2f c out = 4.7f c ou t = 10f unless otherwise specified t a t=25c, v in =v out(nom) , + 1v, on/off pin tied to v in typical performance characteristics
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 14 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 output voltage (v) grade order information *package markings supplied as 2.8 a ILC7082AIM5-28 eaxx 3k units on tape and reel 2.85 a ILC7082AIM5-285 ejxx 3k units on tape and reel 3.0 a ilc7082aim5-30 ebxx 3k units on tape and reel 3.1 a ilc7082aim5-31 ehxx 3k units on tape and reel 3.3 a ilc7082aim5-33 ecxx 3k units on tape and reel 3.6 a ilc7082aim5-36 edxx 3k units on tape and reel 4.7 a ilc7082aim5-47 egxx 3k units on tape and reel 5.0 a ilc7082aim5-50 eexx 3k units on tape and reel adj a ilc7082aim5-adj efxx 3k units on tape and reel *note: first two characters identify the product and the last two identify the date code output voltage (v) grade order information *package markings supplied as 2.85 a ILC7082AIM5-285 7082 aik285 xx 2500 units on tape and reel 3.3 a ilc7082aim5-33 7082 aik33 xx 2500 units on tape and reel sot-23 package markings ilc7082aim5-xx
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 15 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 package outline dimensions dimensions shown in mm and (inches). 8-lead plastic surface mount (soic)
150ma sot-23 ultra low noise cmos rf-ldo? regulator impala linear corporation 16 (408) 574-3939 www.impalalinear.com april 1999 ilc7082 1.3 devices sold by impala linear corporation are covered by the warranty and patent indemnification provisions appearing in its terms of sale only. impala linear corporation makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. impala linear corporation makes no warranty of merchantability or fitness for any purpose. impala linear corporation reserves the right to discontinue production and change specifications and prices at any time and without notice. this product is intended for use in normal commercial applications. applications requiring an extended temperature range, unusual environmental requirements, or high reliability applications, such as military and aerospace, are specif- ically not recommended without additional processing by impala linear corporation. impala linear corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in an impala linear corporation product. no other circuits, patents, licenses are implied. life support policy impala linear corporation?s products are not authorized for use as critical components in life support devices or systems. 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instruc- tions for use provided in the labelling, can be reasonably expected to result in a significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reasonbly expected to cause the failure of the life support device or system, or to affect its safety or effective- ness. package outline dimensions dimensions shown in inches and (mm). 5-lead plastic surface mount (sot-23-5)

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