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(1) 看 应用 信息 部分 为 电容 选择 详细信息.
PG
输出
2
1
在
EN
地
3
5
4
V
I
PG
V
O
47
µ
F
+
C
o
(1)
1
µ
F
tps75901,tps75915
tps75918,tps75925,tps75933
SLVS318E–DECEMBER2000–REVISEDMARCH2004
becausethepmosdevicebehavesasalow-valueresistor,thedropoutvoltageisverylow(typically400mvat
anoutputcurrentof7.5aforthetps75933)andisdirectlyproportionaltotheoutputcurrent.additionally,自从
thepmospasselementisavoltage-drivendevice,thequiescentcurrentisverylowandindependentofoutput
加载(typically125µaoverthefullrangeofoutputcurrent,1mato7.5a).thesetwokeyspecificationsyield
asignificantimprovementinoperatinglifeforbattery-poweredsystems.
thedeviceisenabledwhenenisconnectedtoalow-levelvoltage.thisldofamilyalsofeaturesasleepmode;
applyingattlhighsignaltoen(使能)shutsdowntheregulator,reducingthequiescentcurrenttolessthan
1µAatT
J
=25
°
c.thepower-goodterminal(pg)isanactivelow,opendrainoutput,whichcanbeusedto
implementapower-onresetoralow-batteryindicator.
thetps759xxisofferedin1.5-v,1.8-v,2.5-v,and3.3-vfixed-voltageversionsandinanadjustableversion
(programmableovertherangeof1.22vto5v).outputvoltagetoleranceisspecifiedasamaximumof3%over
线条,加载,andtemperatureranges.thetps759xxfamilyisavailableina5-pinto-220(kc)andto-263(ktt)
包装.
AVAILABLEOPTIONS
outputvoltageto-220to-263
T
J
(典型值)(kc)(ktt)
(1)
3.3vtps75933kctps75933ktt
2.5vtps75925kctps75925ktt
-40
°
Cto125
°
c1.8vtps75918kctps75918ktt
1.5vtps75915kctps75915ktt
adjustable1.22vto5vtps75901kctps75901ktt
(1)thetps75901isprogrammableusinganexternalresistordivider(seeapplicationinformation).增加
T
forkttdevicesin50-piecereel.
增加
R
forkttdevicesin500-piecereel.
figure1.typicalapplicationconfiguration(forfixedoutputoptions)
terminalfunctions(tps759xx)
终端
i/odescription
nameno.
EN1IEnableinput
fb/pg5i/ofeedbackinputvoltageforadjustabledevice/pgoutputforfixedoptions
GND3Regulatorground
IN2IInputvoltage
OUTPUT4ORegulatedoutputvoltage
2
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