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1 low input voltage, high efficiency synchronous boost converter with 1a switch ISL9111, ISL9111a the ISL9111 and ISL9111a provide a power supply solution for single-cell, dual-cell, or three-cell alkaline, nicd or nimh battery-powered applications. the device has a typical 0.8v start-up voltage and is capable of supplying up to 5.25v output voltage. both devices are guaranteed to supply 100ma from a single-cell input and 240ma from a dual-cell input when output is 3.3v. high 1.2mhz switching frequency allows for the use of tiny, low-profile inductors and ceramic capacitors to minimize the size of the solution. the ISL9111 and ISL9111a are in ternally compensated, fully integrated synchronous boost converters optimized for efficiency with minimal external components. at light load, the device enters skip mode and consumes only 20a of quiescent current, resulting in higher efficiency at light loads and maximum battery life. the ISL9111 and ISL9111a addr ess both rechargeable and non-rechargeable battery applications. the ISL9111 has a uvlo feature, which will internally shut off at 0.7v protecting a rechargeable battery. the ISL9111a has this feature disabled to maximize the usable life of a non-rechargeable single cell battery. the parts are available in fixed 3.0v, 3.3v and 5.0v output voltage versions or an ad justable output voltage version (adj). the fixed output voltage version also provides a fault pin for fault condition monito ring. the ISL9111 and ISL9111a are available in a 6 ld sot-23 package. features ? up to 97% efficiency at typical operating conditions ? minimum start-up voltage - 0.8v (ISL9111) - 0.6v (ISL9111a) ? minimum operating voltage - 0.7v (ISL9111) - 0.5v (ISL9111a) ?low quiescent current: 20 a (typical) ? at v out = 3.3v - 100ma output current @ v in = 0.9v - 240ma output from @ v in = 1.8v ? logic control shutdown (iq < 1a) ? output voltage up to 5.25v ? output disconnect during shutdown ? skip mode under light load condition ? undervoltage lockout (ISL9111 only) ? fault protection: ovp (adj version only), otp, short circuit ?6 ld sot-23 package applications ? products including portable hdmi and usb-otg ? personal medical products ? wireless mouse/keyboard ?bluetooth headsets ? mp3/mp4 players/dsc ? single-cell, dual-cell and triple-cell alkaline, nicd, nimh powered products figure 1. typical application figure 2. fixed 5v efficiency sw en gnd fault vout vin 6 5 4 3 2 1 vin vout v flt 4.7h 4.7f 4.7f 1k ISL9111: 3.0/3.3/5.0v, ISL9111a: 3.0/3.3/5.0v 60 65 70 75 80 85 90 95 100 0.1 1 10 100 1000 i out (ma) efficiency (%) v in = 0.9v v in = 3.6v v in = 1.8v caution: these devices are sensitive to electrostatic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | copyright intersil americas inc. 2011. all rights reserved intersil (and design) is a trademark owned by intersil corporation or one of its subsidiaries. all other trademarks mentioned are the property of their respective owners. december 7, 2011 fn7602.3 www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 2 fn7602.3 december 7, 2011 block diagram: ISL9111-adj, ISL9111a-adj gate driver and anti-cross conduction 1.2mhz oscillator g m voltage clamp n-well switch voltage selector uvlo thermal shutdown digital soft-start reference generator control logic and fault monitoring ovp current sense start-up en v out fb current limit sw v out sw zcd v in v out v int v int off on c1 c2 l1 r1 r2 1 5 6 3 2 4 slope comp www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 3 fn7602.3 december 7, 2011 block diagram: ISL9111-3.0/3.3/5.0v, ISL9111a-3.0/3.3/5.0v gate driver and anti-cross conduction 1.2mhz oscillator g m voltage clamp slope comp n-well switch voltage selector uvlo thermal shutdown digital soft-start reference generator control logic and fault monitoring current sense start-up en current limit sw v out sw zcd v in v out v int v int c1 c2 l1 v out off on fault 3 6 5 1 2 4 www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 4 fn7602.3 december 7, 2011 pin configurations fixed (5.0v/3.3v/3.0v) (6 ld sot-23) top view adjustable output (6 ld sot-23) top view vout 5 vin fault sw gnd en 1 2 3 4 6 vout 5 vin fb sw gnd en 1 2 3 4 6 pin descriptions fixed (5.0v, 3.3v, 3.0v) pin number adjustable output pin number symbol pin description 1 1 sw the sw pin is the switching node of the power converter. connect one terminal of the inductor to the sw pin and the other to power input. 22gndsystem ground 3 3 en the en pin is an active-high logic input for enabling the device. when asserted high, the boost function begins. when asserted low, the device is completely disabled, and current is blocked from flowing from the sw pin to the output and vice versa. this pin should be tied either high to enable the device or low to disable. 4-fault fault output; outputs logic low under a number of fault conditions (see table 1 on page 10). - 4 fb feedback pin of the converter. connect voltage divider resistors between vout, fb and gnd for desired output. see figures 3a, 4a, and 5a. 5 5 vout device output 6 6 vin device input supply pin. connect a 4.7f ceramic capacitor to the power ground. www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 5 fn7602.3 december 7, 2011 ordering information part number (notes 1, 2, 3) part marking (note 4) v out (v) temp range (c) package (pb-free) pkg. dwg. # ISL9111eh30z-t gaka 3.0 -20 to +85 6 ld sot-23 p6.064 ISL9111eh30z-t7a gaka 3.0 -20 to +85 6 ld sot-23 p6.064 ISL9111eh33z-t gala 3.3 -20 to +85 6 ld sot-23 p6.064 ISL9111eh33z-t7a gala 3.3 -20 to +85 6 ld sot-23 p6.064 ISL9111eh50z-t gama 5.0 -20 to +85 6 ld sot-23 p6.064 ISL9111eh50z-t7a gama 5.0 -20 to +85 6 ld sot-23 p6.064 ISL9111ehadjz-t gara adjustable -20 to +85 6 ld sot-23 p6.064 ISL9111ehadjz-t7a gara adjustable -20 to +85 6 ld sot-23 p6.064 ISL9111aeh30z-t gbaa 3.0 -20 to +85 6 ld sot-23 p6.064 ISL9111aeh30z-t7a gbaa 3.0 -20 to +85 6 ld sot-23 p6.064 ISL9111aeh33z-t gbab 3.3 -20 to +85 6 ld sot-23 p6.064 ISL9111aeh33z-t7a gbab 3.3 -20 to +85 6 ld sot-23 p6.064 ISL9111aeh50z-t gbac 5.0 -20 to +85 6 ld sot-23 p6.064 ISL9111aeh50z-t7a gbac 5.0 -20 to +85 6 ld sot-23 p6.064 ISL9111aehadjz-t gbad adjustable -20 to +85 6 ld sot-23 p6.064 ISL9111aehadjz-t7a gbad adjustable -20 to +85 6 ld sot-23 p6.064 ISL9111h30zeval1z evaluation board ISL9111h33zeval1z evaluation board ISL9111h50zeval1z evaluation board ISL9111hadjzeval1z evaluation board notes: 1. please refer to tech brief tb347 for details on reel specifications. 2. these intersil pb-free plastic packaged products employ spec ial pb-free material sets, molding compounds/die attach materials , and 100% matte tin plate plus anneal (e3 termination finish , which is rohs compliant and compatible wi th both snpb and pb-free soldering opera tions). intersil pb-free products are msl classified at pb-fr ee peak reflow temperatures that meet or exceed the pb-free requirements of ipc/jed ec j std-020. 3. for moisture sensitivity level (msl), please see device information page for ISL9111 , ISL9111a . for more information on msl please see tech brief tb363 . 4. the part marking is located on the bottom of the part. www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 6 fn7602.3 december 7, 2011 absolute maximum rating s thermal information vin, en, fault , v out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3v to 6.5v fb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3v to 6.5v sw voltage dc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5v to 6.5v pulse < 10ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5v to 8.0v esd ratings human body model (tested per jesd22-a114f) . . . . . . . . . . . . . . . . 3kv machine model (tested per jesd22-a115-a) . . . . . . . . . . . . . . . . . . 250v *other esd spec should meet level 1 requirement latch up (tested per jesd78; class 2, level a) . . . . . . . . . . . . . . . . 100ma thermal resistance (typical) ja (c/w) 6 ld sot-23 (note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 junction temperature range . . . . . . . . . . . . . . . . . . . . . . .-20c to +125c operating temperature range . . . . . . . . . . . . . . . . . . . . . . . -20c to +85c storage temperature range. . . . . . . . . . . . . . . . . . . . . . . .-65c to +150c pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/ pbfree/pb-freereflow.asp recommended operating conditions v in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8v to v out - 200mv ambient temperature range . . . . . . . . . . . . . . . . . . . . . . . . -20c to +85c maximum dc current from input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750ma caution: do not operate at or near the maximum ratings listed for extended periods of time. exposure to such conditions may adv ersely impact product reliability and result in failures not covered by warranty. note: 5. ja is measured with the component mounted on a high effective thermal conductivity test board in free air. see tech brief tb379 for details. electrical specifications v in = 1.2v, v out = 3.3v, t a = +25c (see ?typical application circuits? on page 7). boldface limits apply over the operating temperature range, -20c to +85c. parameter symbol test conditions min (note 6) typ max (note 6) units minimum start-up voltage (ISL9111) v min v en = v in, r load = 50 ? 0.80 0.90 v minimum operating voltage after start-up (ISL9111) v uvlo v en = v in, r load = 50 ? 0.68 0.70 0.76 v minimum start-up voltage (ISL9111a) v min v en = v in, no load 0.75 v minimum operating voltage after start-up (ISL9111a) v opt v en = v in, no load 0.50 v output voltage range (ISL9111-adj/ISL9111a-adj) v out v in < v out 2.5 5.25 v output voltage accuracy (ISL9111: 3.0/3.3/5.0v, ISL9111a: 3.0/3.3/5.0v) v out v in = 1.2v, i load = 50ma -100 +100 mv feedback voltage (ISL9111-adj/ISL9111a-adj) v fb v out = 5v 784 800 816 mv feedback pin input current 100 na quiescent current from v out i q1 no load (note 7) 20 45 a shutdown current from v in i sd v en = 0v, v in = 1.2v, v o = 0 0.5 2 a leakage current at sw pin v en = 0v, v in = 5v, v o = 0, t a = +25c 1 a n-channel mosfet on-resistance v out = 5v 0.2 ? p-channel mosfet on-resistance v out = 5v 0.35 ? n-channel mosfet peak current limit i pk 0.8 1.0 1.2 a maximum duty cycle d max 84 87.5 % pwm switching frequency f osc 1.0 1.2 1.4 mhz soft-start-up time 1ms en logic high 0.8*v in v en logic low 0.2*v in v fault pin leakage current when high v flt = v out 100 na fault pin sink current when low v flt = 0.5v 10 ma www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 7 fn7602.3 december 7, 2011 load regulation v out /v out i load = 0 to 100ma -1.5 +1.5 % line regulation v in = 0.8v to 1.6v, i load = 1ma -1.0 +1.0 % output overvoltage protection threshold (adj version only) 5.9 v output overvoltage protection hysteresis (adj version only) 400 mv thermal shutdown t sd 150 c thermal shutdown hysteresis 25 c notes: 6. compliance to datasheet limits is assu red by one or more methods: production test, characterization and/or design. 7. i q1 is measured at v out and multiplied by v out /v in ; thus, the equivalent input quiescent current is calculated. electrical specifications v in = 1.2v, v out = 3.3v, t a = +25c (see ?typical application circuits? on page 7). boldface limits apply over the operating temperature range, -20c to +85c. (continued) parameter symbol test conditions min (note 6) typ max (note 6) units typical application circuits figure 3a. power supply solution for 2.5v output voltage figure 3b. efficiency at v out = 2.5v figure 4a. power supply solution for 4.0v output voltage figure 4b. efficiency at v out = 4.0v sw en gnd fb vout vin 6 5 4 3 2 1 4.7h 4.7f 4.7f v in v out 357k 166k 2.5v ISL9111, ISL9111a - adj 50 60 70 80 90 100 0.1 1.0 10 100 1000 i out (ma) efficiency (%) v in = 0.9v v in = 1.2v v in = 1.8v sw en gnd fb vout vin 6 5 4 3 2 1 4.7h 4.7f 4.7f v in v out 665k 166k 4.0v ISL9111, ISL9111a - adj 40 50 60 70 80 90 100 0.1 1.0 10 100 1000 i out (ma) efficiency (%) v in = 1.5v v in = 0.9v v in = 1.8v v in = 2.4v www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 8 fn7602.3 december 7, 2011 detailed description current mode pwm operation the control scheme of the device is based on the peak current mode control, and the control loop is compensated internally. the peak current of the n-channel mosfet switch is sensed to limit the maximum current flowing through the switch and the inductor. the typical current limit is set to 1a. the control circuit includes ramp generator, slope compensator, error amplifier, pwm comparator (see block diagrams on page 2 and page 3). the ramp signal is derived from the inductor current. this ramp signal is then compared to the error amplifier output to generate the pwm ga ting signals for driving both n-channel and p-channel mosfets. the pwm operation is initialized by the clock from the internal oscillator (typical 1.2mhz). the n-channel mosfet is turned on at the beginning of a pwm cycle, the p-channel mosfet remains off, and the current starts ramping up. when the sum of the ramp and the slope compensator output reaches the error amplifier output voltage, the pwm comparator outputs a signal to turn off the n-channel mosfet. here, both mosfets remain off during the dead-time interval, and then the p-channel mosfet is turned on and remains on until the end of this pwm cycle. during this time, the inductor current ramps down until the next clock. at this point, following a short dead time, th e n-channel mosfet is again turned on, repeating as previously described. skip mode operation the device is capable of operating in two different modes. when the inductor current is sensed to cross zero for eight consecutive times, the converter enters skip mode. in skip mode, each pulse cycle is still synchronized by the pwm clock. the n-channel mosfet is turned on at the rising edge of the clock and turned off when the inductor peak current reaches typically 25% of the current limit. then the p-channel mosfet is turned on, and it stays on until its current goes to zero. subsequently, both n-channel and p-channel mosfets are turned off until the next clock cycle starts, at which time the n-channel mosfet is turned on again. when v out is 1.5% typically higher than the nominal output voltage, the n-channel mosfet is immediately turned off and the p-channel mosfet is turned on until the inductor current goes to zero. the n-channel mo sfet resumes operation when v fb falls back to its nominal value, repeating the previous operation. the converter returns to 1.2mhz pwm mode operation when v fb drops 1.5% below its nominal voltage. given the skip mode algorithm in corporated in the ISL9111 and ISL9111a, the average value of the output voltage is approximately 0.75% higher than the nominal output voltage under pwm operation. this positive offset improves the load transient response when switch ing from skip mode to pwm mode operation. the ripple on the output voltage is typically 1.5%*v out (nominal) when input voltage is sufficiently lower than output voltage, and it increase s as input voltage approaches output voltage. figure 9 shows the ripple voltage versus input voltage. synchronous rectifier the ISL9111 and ISL9111a inte grate one n-channel mosfet and one p-channel mosfet to realize synchronous boost converters. because the commonly used discrete schottky rectifier is replaced with the low r ds(on) p-channel mosfet, the power conversion efficiency reaches a value above 90%. since a typical step-up converter has a conduction path from the input to the output via the body diode of the p-channel mosfet, a special circuit (see block diagrams on page 2 and page 3) is used to reverse the polarity of the p-chan nel body diode when the part is shut down. this configuration co mpletely disconnects the load from the input during shutdown of the converter. the benefit of this feature is that the battery will not be completely depleted during shutdown of the converter. no additional components are needed to disconnect the battery from the output of the converter. minimum startup and minimum operating voltage the ISL9111 and ISL9111a address applications with rechargeable and non-rech argeable battery cells. 1. the ISL9111 has a uvlo feature. the part can start up with a 0.8v typical input voltage and internally shut off when the battery drops below 0.7v to protect a rechargeable battery from over-discharge. figure 5a. power supply solution for 5.25v output voltage figure 5b. efficiency at v out = 5.25v typical application circuits (continued) sw en gnd fb vout vin 6 5 4 3 2 1 4.7h 4.7f 4.7f v in v out 923k 166k 5.25v ISL9111, ISL9111a - adj 40 50 60 70 80 90 100 0.1 1.0 10 100 1000 i out (ma) efficiency (%) v in = 1.5v v in = 0.9v v in = 1.8v v in = 3.6v v in = 4.2v www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 9 fn7602.3 december 7, 2011 2. uvlo function is disabled in the ISL9111a. the minimum start-up voltage can be as low as 0.6v, and minimum operating voltage can be as low as 0.5v after start-up. the advantage of minimum operating voltage maximizes the performance of a non-recharge able battery, allowing the system to operate until the battery is fully depleted. soft-start when the device is enabled, the start-up cycle starts with linear phase. during linear phase, the rectifying switch is turned on in a current limited configuration, delivering about 200ma, until the output capacitor is charged to approximately 90% of the input voltage. at this point, pwm begins, and thus, boost operation starts. if the output voltage is below 2.3v, pwm switching is done at a fixed duty-cycle of 75% unt il the output voltage reaches 2.3v. when the output voltage exceeds 2.3v, the closed-loop current mode pwm loop overrides the duty cycle until the output voltage is regulated. peak inductor current is ramped to the final value (typically 1a) during the soft-start period to limit in-rush current from the input source. fault mo nitoring begins approximately 2ms after the device is enabled. over-temperature protection (otp) the device offers over-temperature protection. a temperature sensor circuit is integrated and monitors the internal ic temperature. once the temperature exceeds the preset threshold (typically +150c), the ic shuts down immediately. the otp has a typical hysteresis of +25c. when the device temperature decreases by this, the device starts operating. overvoltage protection (ovp) the adjustable version of the ISL9111 and ISL9111a have built in overvoltage protection (ovp) to enhance product robustness for transient up to 8v on sw pin. v out is actively monitored, and should the voltage reach 5.9v (typical), the device will stop switching. this turns off both power mosfets and the stored inductor energy is discharged to v out through the body diode of the synchronous rectifier. fault monitoring and reporting fault monitoring starts 2ms after start-up. table 1 shows the response to different detected faults. any fault condition shown in table 1 causes the fault pin to be taken low. the fault pin will not release until v in and v out fully collapse or until the fault condition is removed. board layout recommendations the ISL9111 and ISL9111a are hi gh frequency sw itching boost converters. accordingly, the converter creates fast voltage changes and high switching current that may cause emi and stability issues if good pcb layout practices are not followed. although the ISL9111 and ISL9111a can tolerate short durations of 8.0v transients, prolonged or higher amplitude excursions may damage the device. care should be taken to minimize the trace inductance and reduce the area of the power loop. power components such as input capacitor, inductor and output capacitor should be placed close to the device. board traces that carry high switching current should be routed wide and short. a solid power ground plane is important for emi suppression. the switching node (sw pin) of the converter and the traces connected to this pin are noisy. noise sensitive traces such as the feedback trace should be kept away from sw pin and traces. the voltage divider should be placed close to the feedback pin to prevent noise pickup. figure 6 shows the recommended evb layout. fixed output voltage and adjustable output voltage ISL9111 and ISL9111a offer option s for fixed output voltages of 5v, 3.3v and 3v, or an ad justable output voltage. for fixed output voltage versions (ISL9111-5.0, ISL9111a-5.0, ISL9111-3.3, ISL9111a-3.3, isl9 111-3.0, ISL9111a-3.0), an internal voltage divider is used (see ?block diagram: ISL9111- 3.0/3.3/5.0v, ISL9111a-3.0/3.3/5.0v? on page 3). for the adjustable output voltage version (ISL9111-adj, ISL9111a -adj), the output voltage is programmed by connecting two external voltage divider resistors among out, fb and gnd (see ?block diagram: ISL9111-adj, ISL9111a-adj? on page 2). output voltage setting resistor selection for the ISL9111 adjustable output version, the resistors, r 1 and r 2 , as shown in the block diagram on page 2, set the desired output voltage values. the output voltage can be calculated using equation 1: where v fb is the internal feedback reference voltage (0.8v typical). the current flowing th rough the divider resistors is calculated as v o /(r 1 + r 2 ). large resistance is recommended to minimize current into the divider and thus improve the total efficiency of the converter. r 1 and r 2 should be placed close to the feedback pin of the device to prevent noise pickup. figure 6. recommended evaluation board layout v in v out gnd gnd v o v fb 1 r 1 r 2 ------ - + ?? ?? ?? ? = (eq. 1) www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 10 fn7602.3 december 7, 2011 inductor selection an inductor with core material suitable for high frequency applications (e.g., ferrite) is desirable to minimize core loss and improve efficiency. the inductor should have a low esr to reduce copper loss. moreover, the inductor saturation current should be higher than the maximum peak cu rrent of the part; i.e., 1.2a. the part is designed to operate with an inductor value of 4.7h to provide stable operation across the range of load, input and output voltages. stable mode switching between pwm and skip mode operation is guaranteed at this inductor value. table 2 shows recommended inductors. capacitor selection input capacitor a minimum 4.7f ceramic capacitor is recommended to provide stable operation under typical operating conditions. for input voltage less than 1.0v applicatio n, an additional 4.7f ceramic capacitor is recommended for better noise filtering and emi suppression. the input capacitor should be placed close to the input pin, gnd pin, and the no n-switching terminal of the inductor. output capacitor for the output capacitor, a ceramic capacitor with small esr is recommended to minimize output voltage ripple. a typical 4.7f should be used to provide stable operation at different typical operating conditions. the output capacitor should be placed close to the output pin and gnd pin of the device. table 3 shows recommended capacitors. table 1. fault detection and response fault condition detection details action low battery voltage (ISL9111 only) v in < 0.7v shut down until v en or v in is cycled. v out out of regulation v out is 10% below the target output voltage. shut down only if v in and v out fall below 2.1v. device automatically restarts after 200ms. fault signal switches on and off when v out drops out of regulation due to overload condition. short circuit v out falls below v in . shut down immediately. device automatically restarts after 200ms. over-temperature protection die temperature is > +150c. s witching stops. device restarts when temperature decreases to +125c (typical). output overvoltage protection (adj version only) v out > 5.90v switching stops until v out drops 400mv below ovp threshold. table 2. inductor vendor information manufacturer series website sumida cdrh2d18/hpnp www.sumida.com abracon aspi-0412fs www.abracon.com bourns sdr0302 www.bourns.com taiyo yuden nrs4012 www.t-yuden.com tdk vlf5012at www.tdk.com table 3. capacitor vendor information manufacturer series website avx x5r www.avx.com murata x5r www.murata.com taiyo yuden x5r www.t-yuden.com tdk x5r www.tdk.com www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 11 fn7602.3 december 7, 2011 typical characteristics figure 7. efficiency at v out = 3.0v figure 8. efficiency at v out = 3.3v figure 9. output ripple vs input voltage figure 10. quiescent current vs temperature figure 11. maximum output current vs input voltage figure 12. line regulation, v out = 3.3v 55 60 65 70 75 80 85 90 95 0.1 1.0 10 100 1000 i out (ma) efficiency (%) v in = 1.2v v in = 0.9v v in = 1.8v 55 60 65 70 75 80 85 90 95 0.1 1.0 10 100 1000 i out (ma) efficiency (%) v in = 1.8v v in = 1.2v v in = 2.4v 0 50 100 150 200 250 300 012345 v in (v) v ripple (mv) 5.0v_10ma 3.3v_0a 3.3v_10ma 5.0v_0a 3.0v_10ma 3.0v_0a 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 31.5 32.0 32.5 0123456 i q ( a) +85c +25c v in (v) -40c -10c 0 100 200 300 400 500 600 700 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 v in (v) i out (ma) v o = 3.3v v o = 5.0v v o = 3.0v 3.320 3.325 3.330 3.335 3.340 3.345 3.350 3.355 0.6 0.8 1.0 1.2 1.4 1.6 1.8 v in (v) v out (v) i out = 1ma(psm) i out = 50ma(pwm) www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 12 fn7602.3 december 7, 2011 figure 13. load regulation, v in = 1.2v figure 14. line regulation, v out = 5.0 figure 15. load regulation, v in = 3.6v figure 16. start-up with minimum resistance (preloaded) vs v in figure 17. skip mode waveform figure 18. pwm waveform typical characteristics (continued) 3.300 3.305 3.310 3.315 3.320 3.325 3.330 3.335 3.340 3.345 3.350 0 20 40 60 80 100 120 140 160 load (ma) v out (v) 4.990 4.995 5.000 5.005 5.010 5.015 5.020 5.025 5.030 0.6 0.8 1.0 1.2 1.4 1.6 1.8 v in (v) v out (v) i out = 10ma(psm) i out = 40ma(pwm) 4.98 4.99 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 0 50 100 150 200 250 300 350 load (ma) v out (v) 10 100 1000 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1.0 1.05 1.1 1.15 1.2 v in (v) resistor load ( ? ) c in = 4.7f v out = 3.3v v in = 3.6v, v out = 5.0v, i load = 20ma v out with 5.0v offset(200mv/div) inductor current(200ma/div) sw(2.0v/div) v in = 3.6v, v out = 5.0v, i load = 200ma v out with 5.0v offset (50mv/div) inductor current(200ma/div) sw(2.0v/div) www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 13 fn7602.3 december 7, 2011 figure 19. start-up after enable figure 20. start-up after enable figure 21. load transient response figure 22. load transient response figure 23. line transient typical characteristics (continued) v in = 3.6v, v out = 5.0v, i load = 200ma vout(2.0v/div) inductor current(200ma) en(5.0v/div) sw(2.0v/div) v in = 3.6v, v out = 5.0v, i load = 50ma vout(2.0v/div) inductor current(200ma) en(5.0v/div) sw(2.0v/div) v in = 3.6v, v out = 5.0v v out with 5.0v offset(500mv/div) i load = 20ma to 100ma v in = 3.6v, v out = 5.0v i load = 20ma to 200ma v out with 5.0v offset(500mv/div) v in = 3.0v to 3.6v, v out = 5.0v, i load = 200ma v out with 5.0v offset(200mv/div) v in (1.0v/div) www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 14 intersil products are manufactured, assembled and tested utilizing iso9000 quality systems as noted in the quality certifications found at www.intersil.com/design/quality intersil products are sold by description only. intersil corporat ion reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnished by intersil is believed to be accurate and reliable. however, no responsi bility is assumed by intersil or its subsid iaries for its use; nor for any infringem ents of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of i ntersil or its subsidiaries. for information regarding intersil corporation and its products, see www.intersil.com fn7602.3 december 7, 2011 for additional products, see www.intersil.com/product_tree products intersil corporation is a leader in the design and manufacture of high-performance analog semico nductors. the company's product s address some of the industry's fastest growing markets, such as , flat panel displays, cell phones, handheld products, and noteb ooks. intersil's product families address power management and analog sign al processing functions. go to www.intersil.com/products for a complete list of intersil product families. for a complete listing of applications, rela ted documentation and related parts, please see the respective device information p age on intersil.com: ISL9111 , ISL9111a to report errors or suggestions for this datasheet, please go to: www.intersil.com/askourstaff fits are available from our website at: http://rel.intersil.co m/reports/search.php revision history the revision history provided is for informat ional purposes only and is believed to be accurate, but not warranted. please go t o web to make sure you have the latest revision. date revision change december 7, 2011 fn7602.3 initial release to web. www.datasheet.net/ datasheet pdf - http://www..co.kr/
ISL9111, ISL9111a 15 fn7602.3 december 7, 2011 package outline drawing p6.064 6 lead small outline transistor plastic package rev 4, 2/10 dimension is exclusive of mold flash, protrusions or gate burrs. package conforms to jedec mo-178ab. foot length is measured at reference to guage plane. dimensions in ( ) for reference only. dimensioning and tolerancing conform to asme y14.5m-1994. 5. 3. 4. 2. dimensions are in millimeters. 1. notes: detail "x" side view typical recommended land pattern top view end view index area pin 1 seating plane gauge 0.450.1 (2 plcs) 10 typ 4 1.90 0.40 0.10 2.90 0.10 0.95 1.60 +0.15/-0.10 2.80 0.00-0.15 1.15 +0.15/-0.25 0.20 c a-b d m (1.20) (0.60) (0.95) (2.40) 0.10 c 0.08-0.22 see detail x (0.25) 1.45 max (0.60) 0-8 c b a d 3 3 3 3 0.20 c 2x 123 654 plane www.datasheet.net/ datasheet pdf - http://www..co.kr/

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