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1 2010/3/2 gm66300 series 3.0a ultra low dropout voltage regulators gm66300 v2.01 www.gammamicro.com.tw features ? 3.0a minimum guaranteed output current ? 500mv maximum dropout voltage over temperature, which is ideal for 3.0v to 2.5v conversion and 2.5v to 1.8v conversion. ? 1% initial accuracy ? low ground current ? current limiting and thermal shutdown ? reversed-battery protection ? reversed-leakage protection ? fast transient response ? error flag output (gm66301 only) ? adjustable version (gm66302 only) application description the gm66300, gm66301 and gm66302 are 3.0a, low dropout linear voltage regulators that provide a low voltage, high-current output with a minimum of external components. utilizing proprietary super beta pnp pass element, the gm66300/1/2 offers extremely low dropout (typically 400mv at 3.0a) and low ground current (typically 36ma at 3.0a). the gm66300/1/2 is ideal for pc add-in cards that need to convert from standard 3.3v to 2.5v or 2.5v to 1.8v. a guaranteed maximum dropout voltage of 500mv over all operating conditions allows the gm66300/1/2 to provide 2.5v from a supply as low as 3v, and 1.8v from a supply as low as 2.5v. the gm66300/1/2 also has fast transient response for heavy switching applications. the device requires only 47f of output capacitance to maintain stability and achieve fast transient response. the gm66300/1/2 is fully protected with over current limiting, thermal shutdown, reversed-battery protection, reversed-leakage protection, and reversed-lead insertion. the gm66301 offers a ttl-logic compatible enable pin and an error flag that indicates under voltage and over current conditions. offered in fixed voltages, the gm66300/1 comes in the to-220 and to-263 packages and is an ideal upgrade to older, npn-based linear voltage regulators. the gm66302 is adjustable version, with on/off feature. ? pc add-in cards ? high efficiency linear power supplies ? multi-media and pc processor supplies ? low voltage microcontrollers ? automotive electronics typical application circuits gm66300-2.5 v in v out gnd v in 3.3v v out 2.5v 47uf v out gnd v in 3.3v v out 2.5v 47uf gm66302 v in v out gnd v in v out 47uf flag enable error flag output enable shutdown adj gm66301-2.5 1.0uf enable enable shutdown
2 gm66300 v2.01 gm66300 series 3.0a ultra low dropout voltage regulators marking information and pin configurations (top view) gm66300 (pb free) to 220 to 263 (d 2 -pak) vv: voltage suffix (15 = 1.5v, 50 = 5.0v?a = adj) a: assembly / test site code y: year ww: week gm66300 (green product) to 220 to 263 (d 2 -pak) g: green product vv: voltage suffix (15 = 1.5v, 50 = 5.0v?a = adj) a: assembly / test site code y: year ww: week gm66300 vvayww 1. v in 2.gnd 3. v out gm66300 vvayww 1. v in 2. gnd 3. v out gm66300g vvayww 1. v in 2.gnd 3. v out gm66300g vvayww 1. v in 2. gnd
3 2010/3/2 gm66300 series 3.0a ultra low dropout voltage regulators gm66300 v2.01 marking information and pin configurations (top view) gm66301 (pb free) 5l to 220 5l to 263 vv: voltage suffix (15 = 1.5v, 50 = 5.0v?a = adj) a: assembly / test site code y: year ww: week gm66301 (green product) 5l to 220 5l to 263 g: green product vv: voltage suffix (15 = 1.5v, 50 = 5.0v?a = adj) a: assembly / test site code y: year ww: week gm66301 vvayww 3. gnd 1. enable 2. input 5. flag 4. output gm66301 vvayww 3. gnd 1. enable 2. input 5. flag 4. output gm66301g vvayww 3. gnd 1. enable 2. input 5. flag 4. output gm66301g vvayww 3. gnd 1. enable 2. input 5. flag 4. output
4 gm66300 v2.01 gm66300 series 3.0a ultra low dropout voltage regulators marking information and pin configurations (top view) gm66302 (pb free) 5l to 220 5l to 263 vv: voltage suffix (15 = 1.5v, 50 = 5.0v?a = adj) a: assembly / test site code y: year ww: week gm66302 (green product) 5l to 220 5l to 263 g: green product vv: voltage suffix (15 = 1.5v, 50 = 5.0v?a = adj) a: assembly / test site code y: year ww: week gm66302 vvayww 3. gnd 1. enable 2. input 5. adj 4. output gm66302 vvayww 3. gnd 1. enable 2. input 5. adj 4. output gm66302g vvayww 3. gnd 1. enable 2. input 5. adj 4. output gm66302g vvayww 3. gnd 1. enable 2. input 5.adj 4. output
5 2010/3/2 gm66300 series 3.0a ultra low dropout voltage regulators gm66300 v2.01 ordering information ? pb free ordering number output voltage package shipping gm66300 gm66300-1.8ta3t 1.8v to-263 50 units/tube gm66300-1.8ta3r 1.8v to-263 800 units / reel gm66300-1.8tb3t 1.8v to-220 50 units/tube gm66300-2.5ta3t 2.5v to-263 50 units/tube gm66300-2.5ta3r 2.5v to-263 800 units / reel gm66300-2.5tb3t 2.5v to-220 50 units/tube gm66300-3.3ta3t 3.3v to-263 50 units/tube gm66300-3.3ta3r 3.3v to-263 800 units / reel gm66300-3.3tb3t 3.3v to-220 50 units/tube gm66300-5.0ta3t 5.0v to-263 50 units/tube gm66300-5.0ta3r 5.0v to-263 800 units / reel gm66300-5.0tb3t 5.0v to-220 50 units/tube ordering information ? green product ordering number output voltage package shipping gm66300 gm66300-1.8ta3tg 1.8v to-263 50 units/tube gm66300-1.8ta3rg 1.8v to-263 800 units / reel gm66300-1.8tb3tg 1.8v to-220 50 units/tube gm66300-2.5ta3tg 2.5v to-263 50 units/tube gm66300-2.5ta3rg 2.5v to-263 800 units / reel gm66300-2.5tb3tg 2.5v to-220 50 units/tube gm66300-3.3ta3tg 3.3v to-263 50 units/tube gm66300-3.3ta3rg 3.3v to-263 800 units / reel gm66300-3.3tb3tg 3.3v to-220 50 units/tube gm66300-5.0ta3tg 5.0v to-263 50 units/tube gm66300-5.0ta3rg 5.0v to-263 800 units / reel gm66300-5.0tb3tg 5.0v to-220 50 units/tube
6 gm66300 v2.01 gm66300 series 3.0a ultra low dropout voltage regulators ordering information ? pb free ordering number output voltage package shipping gm66301 gm66301-1.8ta5t 1.8v 5l-to-263 50 units/tube gm66301-1.8ta5r 1.8v 5l-to-263 800 units / reel gm66301-1.8tb5t 1.8v 5l-to-220 50 units/tube gm66301-2.5ta5t 2.5v 5l-to-263 50 units/tube gm66301-2.5ta5r 2.5v 5l-to-263 800 units / reel gm66301-2.5tb5t 2.5v 5l-to-220 50 units/tube gm66301-3.3ta5t 3.3v 5l-to-263 50 units/tube gm66301-3.3ta5r 3.3v 5l-to-263 800 units / reel gm66301-3.3tb5t 3.3v 5l-to-220 50 units/tube gm66301-5.0ta5t 5.0v 5l-to-263 50 units/tube gm66301-5.0ta5r 5.0v 5l-to-263 800 units / reel gm66301-5.0tb5t 5.0v 5l-to-220 50 units/tube ordering information ? green product ordering number output voltage package shipping gm66301 gm66301-1.8ta5tg 1.8v to-263-5 50 units/tube gm66301-1.8ta5rg 1.8v to-263-5 800 units / reel gm66301-1.8tb5tg 1.8v to-220-5 50 units/tube gm66301-2.5ta5tg 2.5v to-263-5 50 units/tube gm66301-2.5ta5rg 2.5v to-263-5 800 units / reel gm66301-2.5tb5tg 2.5v to-220-5 50 units/tube gm66301-3.3ta5tg 3.3v to-263-5 50 units/tube gm66301-3.3ta5rg 3.3v to -263-5 800 units / reel gm66301-3.3tb5tg 3.3v to-220-5 50 units/tube gm66301-5.0ta5tg 5.0v to-263-5 50 units/tube gm66301-5.0ta5rg 5.0v to-263-5 800 units / reel gm66301-5.0tb5tg 5.0v to-220-5 50 units/tube
7 2010/3/2 gm66300 series 3.0a ultra low dropout voltage regulators gm66300 v2.01 ordering information ? pb free ordering number output voltage package shipping gm66302 gm66302ta5t adj to-263-5 50 units/tube gm66302ta5r adj to-263-5 800 units / reel gm66302tb5t adj to-220-5 50 units/tube ordering information ? green product ordering number output voltage package shipping gm66302 gm66302ta5tg adj to-263-5 50 units/tube gm66302ta5rg adj to-263-5 800 units / reel gm66302tb5tg adj to-220-5 50 units/tube
8 gm66300 v2.01 gm66300 series 3.0a ultra low dropout voltage regulators absolute maximum ratings parameter symbol value unit power dissipation p d internally limited w input power supply voltage (note 1) v in -20 to +20 v enable pin voltage v en +20 v storage temperature range t stg - 65 to 150 j lead temperature (soldering, 5 sec) + 260 j note 1: maximum positive supply voltage of 60v must be of limited duration (<100msec) and duty cycle ( < 1%). the maximum continuous supply voltage is 26v. operating ratings parameter symbol value unit maximum operating input voltage v in 2.5 - 16 v operating junction temperature t j -40 to +125 j block diagram out in o.v. i limit 18v r1* 1.24v v ref + - r2* thermal shut down gnd adj** 1.18v flag en * feedback network in fixed versions only ** adjustable version only
9 2010/3/2 gm66300 series 3.0a ultra low dropout voltage regulators gm66300 v2.01 electrical characteristics: unless otherwise specified: t j = 25c, bold values are guaranteed across the full operating temperature range. parameter condition symbol min typ max unit i o = 10ma -1 1 output voltage 10ma i o 3.0a, v out + 1v v in 8v v out -2 2 % line regulation i o = 10ma, v out + 1v v in 8v ? v oi 0.06 0.5 % load regulation v in = v out + 1v, 10ma i o 3a ? v ol 0.2 1.0 % output temperature coefficient (note 5) ? v out / ? t 20 100 ppm/ j i o = 100ma 65 200 i o = 750a 185 i o = 1.5a 250 dropout voltage (note 6, note 9) ? v out = -1% i o = 3.0a v do 385 550 mv i o = 750ma, v in = v out + 1v 10 20 i o = 1.5a, v in = v out + 1v 17 ground current (note 7) i o = 1.5a, v in = v out + 1v i gnd 45 ma ground pin current at dropout v in = 0.5v less than specified v out , i o = 10ma i gnddo 6 ma current limit v out = 0v, v in = v out + 1v i cl 4.5 a enable input gm66301/gm66302 low (off) 0.8 input logic voltage high (on) 2.5 v 15 30 v en = 2.5v 75 2 enable pin input current v en = 0.8v i en 4 a 10 regulator output current in shutdown (note 8) i osd 20 a flag output (gm66301) 0.01 1 output leakage current v oh = 16v i flg(leak) 2 a 220 300 output low voltage v in = 2.5v, i ol = 250 a, note 9 v flg(do) 400 mv low threshold % of v out 93 high threshold % of v out 99.2 hysteresis v flg 1 %
10 gm66300 v2.01 gm66300 series 3.0a ultra low dropout voltage regulators note 1. exceeding the absolute maximum ratings may damage the device. note 2. the device is not guaranteed to fu nction outside its operating rating. note 3. devices are esd sensitive. handing precautions recommended. note 4. p d(max) =(t j(max) -t a )+ ja , where ja depends upon the printed circuit layou t. see ?applications information?. note 5. output voltage temperature coefficient is .vout(worst case)+ (tj(max)- tj(min)) where tj(m ax) is +125c and tj(min) is -40c. note 6. vdo=vin-vout when vout decreases to 99% of its nomi nal output voltage with vin=vout+1v. for output voltages below 2.5v, dropout voltage is the input-to-output voltage diffe rential with the minimum input voltage being 2.5v. minimum input operating voltage is 2.5v. note 7. ignd is the quiescent current. iin=ignd+iout. note 8. ven ? 0.8v, vin ? 8v, and vout=0v. note 9. for 1.8v device, vin=2.5v.
11 2010/3/2 gm66300 series 3.0a ultra low dropout voltage regulators gm66300 v2.01 typical application circuits the gm66300/01/02 is a high performance, low dropout voltage regulator suitable for moderate to high-current voltage regulator applications. its 500mv dropout voltage at full load makes it especially valuable in battery-powered systems and a high-efficiency noise filter in post-regulator applications. unlike older npn-pass transistor designs, where the minimum dropout voltage is limited by the base-to-emitter voltage drop and collector-to-emitter saturation voltage, dropout performance of the pnp output of these devices is limited only by the low vce saturation voltage. a trade-off for t he low dropout voltage is a varying base drive requirement. super beta pnp process reduces this drive requirement to only 2% to 5% of the load current. the gm66300/01/02 regulator is fully protected from damage due to fault conditions. current limiting is provided. this limiting is linear, output current during overload conditions is constant. thermal shutdown disables the device when the die temperature exceeds the maximum safe operating tem perature. transient protection allows device (and load) survival even when the input voltage spikes above and below nominal. the output structure of these regulators allows voltages in excess of the desired output volta ge to be applied without reverse current flow. ? thermal design linear regulators are simple to use. the most co mplicated design parameters to consider are thermal characteristics. thermal design requires four app lication-specific parameters: ?e maximum ambient temperature (t a ) ?e output current (i out ) ?e output voltage (v out ) ?e input voltage (v in ) ?e ground current (i gnd ) calculate the power dissipation of the regulator from these numbers and the device parameters from this datasheet, where the ground curr ent is taken from data sheet p d = (v in - v out ) x i out + v in x i gnd the heat sink thermal resistance is determined by: ja = t j(max) ? t a ? ( jc + cs ) p d where t j(max) 125c and cs is between 0c and 2c/w. the heat sink may by significantly reduced in applicat ions where the minimum input voltage is known and is large compared with the dropout voltage. use a series in put resistor to drop excessive voltage and distribute the heat between this resistor and the regulat or. the low dropout properties of super eta pnp regulators allow significant reductions in regulator power dissipation and the associated heat sink without compromising performance. when this technique is employed, a capaci tor of at least 1.0f is needed directly between the input and regulator ground. refer to application note 9 for further details and examples on thermal design and heat sink specification. ? output capacitor the gm66300/1/2 requires an output capacitor to mainta in stability and improve transient response. proper capacitor selection is important to ensure proper op eration. the gm66300/1/2 output capacitor selection is dependent upon the esr (equivalent series resistance) of the output capacitor to maintain stability. when the output capacitor is 47f or greater, the output capacitor should have le ss than 1. of esr. this will improve transient response as well as promote stability. ultra-low esr capacitors, such as ceramic chip capacitors may promote instability. these very low esr levels may cause an oscillation and/or underdamped transient response. a low-esr solid tantalum capacitor works extremely well and provides good transient response and stability over temperature. al uminum electrolytics can also be used, as long as the esr of the capacitor is 1 ? . the value of the output capacitor can be increased with out limit. higher capacitance values help to improve transient response and ripple rejection and reduce output noise.
12 gm66300 v2.01 gm66300 series 3.0a ultra low dropout voltage regulators ? input capacitor an input capacitor of 1f or greater is recommended when the device is more than 4 inches away from the bulk as supply capacitance, or when the supply is a batte ry. small, surfacemount, ceramic chip capacitors can be used for the bypassing. larger values will help to improve ripple rejection by bypassing the input to the regulator, further improving the integr ity of the output voltage. ? transient repsonse and 3.3v to 2.5v and 2.5v to 1.8v conversions the gm66300/1/2 has excellent transient response to vari ations in input voltage and load current. the device has been designed to respond quickly to load current variations and input voltage variations. large output capacitors are not required to obtain this performance. a standard 47f output capacitor, preferably tantalum, is all that is required. larger values hel p to improve performance even further. by virtue of its low-dropout voltage, this device does not saturate into dropout as readily as similar npn-based designs. when converting from 3.3v to 2.5v or 2.5v to 1.8v , the npn-based regulators are already operating in dropout, with typical dropout requirements of 1.2v or greater. to convert down to 2.5v without operating in dropout, npn-based regulators require an input voltage of 3.7v at the very leas t. thegm66300/1/2 regulator will provide excellent performance with an input as low as 3.0v or 2.5v. this gives the pnp-based regulators a distinct advantage over older, npn-based linear regulators. ? minimum load current the mic39300/1/2 regulator is specified between finite loads. if the output current is too small, leakage dominate and the output voltage rises. a 10ma minimum load current is necessary for proper regulation. ? error flag the gm66301 version features an error flag circuit which monitors the output voltage and signals an error condition when the voltage drops 5% below the nominal output voltage. the error flag is an open-collector output that can sink 10ma during a fa ult condition. low output voltage can be caused by a number of problems, including an over current fault (device in current limit) or low input voltage. the flag is inoperative during over temperature shutdown. when the error flag is not used, it is best to leave it open. the flag pin can be tied directly to pin 4, the output pin. ? enable input the gm66301/2 version features an enable input for on/o ff control of the device. its shutdown state draws ?zero? current (only microamperes of leakage). the ena ble input is ttl/cmos compatible for simple logic interface, but can be connected to up to 20v . when enabled, it draws approximately 15a.
13 2010/3/2 gm66300 series 3.0a ultra low dropout voltage regulators gm66300 v2.01 package outline dimensions ? to-263-5 0.028 - 0.038 (0.71 - 0.97) 0.565 max (14.35) max 0.057 - 0.077 (1.45 - 1.96) 0.330 - 0.350 (8.38 - 8.89) 0.390 - 0.410 (9.91 - 10.41) 0.260 - 0.280 (6.60 - 7.71) 0.015 - 0.030 (0.38 - 0.76) (2.29 - 2.79) 0.090 - 0.110 7 3 0.175 - 0.183 0.048 - 0.052 0.050 (1.27) (4.45 - 4.65) (1.22 - 1.32) package outline dimensions ? to-220-5 0.030 - 0.040 (0.76 - 1.02) 0.057 - 0.077 (1.45 - 1.96) 0.330 - 0.350 (8.38 - 8.89) 0.240 - 0.260 (6.10 - 6.60) 0.100 - 0.120 (2.54 - 3.05) (0.38 + 0.18) (0.38 - 0.03) 0.400 + 0.015 0.400 - 0.005 0.149 - 0.153 (3.78 - 3.89) 0.175 - 0.185 (4.45 - 4.75) 0.015 + 0.007 0.015 - 0.001 (0.38 + 0.18) (0.38 - 0.03) 0.105 + 0.010 0.105 - 0.010 (2.67 + 0.25) (2.67 - 0.38) 0.525 - 0.555 (13.34 - 14.10) (13.34 - 14.10) 0.525 - 0.555 0.048 - 0.052 (1.22 - 1.32)
14 gm66300 v2.01 gm66300 series 3.0a ultra low dropout voltage regulators package outline dimensions ? to263 0.045 - 0.055 (1.143 - 1.397) 0.050 +/- 0.012 (1.270 +/- 0.305) 0.090 - 0.110 (2.286 - 2.794) 0.143 + 0.012 0.143 - 0.002 (3.632 + 0305) (3.362 - 0.508) 0.050 (1.270) 0.013 - 0.023 (0.330 - 0.584) typ 0.059 (1.499) 0.020 - 0.039 (0.510 - 0.990) 0.330 - 0.370 (8.382 - 9.398) 0.060 (1.524) typ 0.390 - 0.415 (9.906 - 10.541) typ 15 0.105 - 0.180 (4.191 - 4.572)
15 2010/3/2 gm66300 series 3.0a ultra low dropout voltage regulators gm66300 v2.01 6 8 10 ordering number g m 66300 -1.5 ta3 r g output voltage package type shipping type apm gamma micro circuit type 1.8 = 1.8v 2.5 = 2.5v 3.3 = 3.3v 5.0 = 5.0v ta3: to263 tb3: to220 r:taping& reel t: tube blank: pb-free g:green g m 66301 -1.5 ta5 r g output voltage package type shipping type apm gamma micro circuit type 1.8 = 1.8v 2.5 = 2.5v 3.3 = 3.3v 5.0 = 5.0v ta5: to263-5 tb5: to220-5 r:taping& reel t:tube blank: pb-free g:green g m 66302 -a ta5 r g output voltage package type shipping type apm gamma micro circuit type adj ta3: to263-5 tb3: to220-5 r:taping& reel t:tube blank: pb-free g:green

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