200214077-1/7 data and specifications subject to change without notice. ape8800a 300ma low dropout linear r e g ulator with s h u tdown pin assignments sot-23-5 packag e 2 1 3 54 top view 1. vin 2. gnd 3. shdn 4. bp 5. vout f igure 1. pin assignment of ape8800a ordering information sot-23-5 marking part number product code part number product code ape8800a-15y5p fc ape8800a-28y5p fe APE8800A-18Y5P fb ape8800a-30y5p ff ape8800a-25y5p fd ape8800a-33y5p fh description the ape8800a is a low dropout, positive linear regu lator with very low quiescent current. the ape8800a can supply 300ma output current with low dropout voltage at about 250mv. the bp pin with a 10nf bypass capacitor can help reduce the output noise level. the shutdown function can provide remote control for the external signal to decide the on/off state of ape8800a. with a logic high level at shdn pin, the device is in the on state, and vice versa. the ape8800a regulator is able to operate with output capacitors as small as 1f for stability. other than the current limit protectio n, ape8800a also offers the on chip thermal shutdown feature providing protection against overload or any condition when the ambient temperature exceeds the maximum junction temperature. the ape8800a offers high precision output voltage of 2%. it is available in fixed output voltages including 1.5v, 1.8v, 2.5v , 2.8v, 3.0v, and 3.3v. the ape8800a is housed in low-profile, space-saving 5-lead sot-23-5 package. features low dropout voltage of 250mv at 300ma guaranteed 300ma output current very low quiescent current at 30a max. 2% output voltage accuracy needs only 1f capacitor for stability thermal shutdown protection current limit protection active low shutdown control low-esr ceramic capacitor for output stability tiny package: sot-23-5 rohs compliant applications dsc wireless devices lcd modules battery power systems card readers pda p: pb free with commercial standard (rohs compliant) output voltage 15: 1.5v 28 : 2.8v 18: 1.8v 30: 3.0v 25: 2.5v 33: 3.3v ape8800a- ? ? ? package type y 5: sot-23-5 advanced power electronics corp.
2/7 ape8800a typical application circuit ape8800a vin gnd shdn vout bp v in v shdn v out c in 1 f c out 1 f c bp 10 nf figure 2. typica l application circuit of ape8800a note j to prevent oscillation, it is recommended to use minimu m 1f x7r or x5r dielectric capacitors if ceramics are used as input/output capacitors. functional pin description pin name pin function vin power is supplied to this device from this pin which is required an input filter capacitor. in general, the input capacitor in the range of 1f to 10f is sufficient. vout the output supplies power to loads. the output capacitor is required to prevent output voltage from oscillation. the ape8800a is stable with an output capacitor 1f or greater. the larger output capacitor will be required for application with larger load transients. the large output capacitor could reduce output noise, improve stability, and psrr. gnd common ground pin bp reference n oise byp ass ( the bypass capacitor >= 1nf ) shdn chip enable (active high) block diagram error amp current limit thermal shutdown @ vref 1.2v vin vout gnd rsen pmos r1 r2 power shutdown shdn bp f igure 3. block diagram of ape8800a advanced power electronics corp.
3/7 ape8800a absolute maximum ratings ? supply input voltage (v in )----------------------------------------------------------------------------------- + 6v ? maximum junction temperature (t j )-------------------------------------------------------------------- + 150 10nf, f=1khz, v in =5v 0.4 hz v temperature coefficient tc i out = 1ma, v in = 5v 50 ppm/ ? thermal shutdown temperature tsd 160 ? thermal shutdown hysteresis ' tsd 25 ? shutdown pin current i s hdn 0.1 ? noise bypass terminal voltage v ref 1.23 v shutdown pin voltage (on) v s hdn (on) 1.4 v shutdown pin voltage (off) v s hdn (off) 0.4 v shutdown exit delay time ' t c bp =0.1uf, c out =1uf, i out =30ma 300 ? note 1 j the dropout voltage is defined as v in -v out , which is measured when v out drops about 100mv. note 2 j regulation is measured at a constant junc tion temperature by using 40ms current pulse and load regulation in the load range fro m 0ma to 300ma. advanced power electronics corp. ambient temperature (t a ) ---------------------------------------------------------------------------------- -40 to 85 o c ?
4/7 ape8800a application information the ape8800a is a low dropout linear regulator that could provide 300ma output current at dropout volt- age about 250mv. current limit and on chip thermal shutdown features provide protection against any combination of overload or ambient temperature that could exceed maximum junction temperature. 1. output and input capacitor the ape8800a regulator is designed to be stable with a wide range of output capacitors. the esr of the output capacitor affects stability. larger value of the output capacitor decreases the peak deviations and improves transient response for larger current changes. the capacitor types (aluminum, ceramic, and tant- alum) have different characterizations such as temperature and voltage coefficients. all ceramic capacitors are manufactured with a variety of dielectrics, each with different behavior across temperature and applications. common dielectrics used are x5r, x7r and y5v. it is recommended to use 1uf to 10uf x5r or x7r dielectric ceramic capacitors with 30m : to 50m : esr range betw- een device outputs and ground for stability. the ape8800a is designed to be stable with low esr ceramic capacitors and higher values of cap- acitors and esr could im prove output stability. the esr of output capacitor is very important because it generates a zero to provide phase lead for loop stability. there are no requirements for the esr on the input capacitor, but its voltage and temperature coefficient have to be considered for device application environment. 2. protection features in order to prevent overloading or thermal con- dition from damaging the device, ape8800a has internal thermal and current limiting functions designed to protect the device. it will rapidly shut off pmos pass element during overload- ing or over temperature condition. 3. thermal consideration the power handling capabi lity of the device will be limited by maximum operation junction tem- perature. the power dissipated by the device will be estimated by pd = iout u (vin-vout). the power dissipation should be lower than the maximum power dissipation listed in ?absolute maximum ratings? section. 4. shutdown operation the ape8800a is shutdown by pulling the shdn input low, and turned on by driving the sh d n high. if this functio n is no t used, the shdn input should be tied to vin to keep the regu- lator on at all times (the shdn must not be left floating). advanced power electronics corp.
5/7 ape8800a typical performance curves 3.0 3.5 4.0 4.5 5.0 5.5 6.0 30 35 40 45 50 quiescent current(ua) input voltage(v) 3.54.04.55.05.56.0 650 700 750 800 850 current limit(ma) input voltage(v) figure 4. quiescent current vs. input voltage figur e 5. current limit vs. input voltage -40-20 0 20406080100120 650 700 750 800 850 current limit (ma) temperature( o c) -40 -20 0 20 40 60 80 100 120 20 30 40 50 60 quiescent current(ua) temperaure( o c) figure 6. current limit vs. temperature fi gure 7. quiescent current vs. temperature -25 0 25 50 75 100 125 0.990 0.991 0.992 0.993 0.994 0.995 0.996 0.997 0.998 0.999 1.000 normalized output voltage temperature( o c) 0 50 100 150 200 250 300 0 100 200 300 400 500 dropout voltage(mv) output current (ma) -40 o c 25 o c 85 o c 125 o c figure 8. output voltage vs. temperature figure 9. dropout vo ltage vs. temperature advanced power electronics corp.
6/7 ape8800a typical performance curves (continued) v in =5v i out =150ma c in =1uf c out =1uf figure 10. shutdown function figure 11. load transient response v in =4~5v i out =10ma c in =1uf c out =1uf v in =5v i out =1ma c in =1uf c out =1uf figure 12. line transient response figure 13. shutdown exit delay time vout shdn shdn vout iout vin vout vout advanced power electronics corp.
7/7 ape8800a outline information sot-23-5 package (unit: mm) dimension in millimeter symbols unit min nom max a 1.00 1.10 1.30 a1 0.00 --- 0.10 a2 0.70 0.80 0.90 b 0.35 0.40 0.50 c 0.10 0.15 0.25 d 2.70 2.90 3.10 e 1.50 1.60 1.80 e --- 1.90(typ) --- h 2.60 2.80 3.00 l 0.37 --- --- 1 1o 5o 9o e1 --- 0.95(typ) --- note 1 j package body sizes exclude mold flash protrusions or gate burrs. note 2 j tolerance 0.1000 mm(4mil) unless otherwise spe- cified. note 3 j coplanarity j 0.1000 mm note 4 j dimension l is measured in gage plane. advanced power electronics corp. ?
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