www.德州仪器.com
22 pf
15 pf
15 pf
输出 电压
程序编制 手册
输出
电压
R1 R2
2.5 v
3.3 v
3.6 v
C1
31.6 k
Ω
51 k
Ω
59 k
Ω
30.1 k
Ω
30.1 k
Ω
30.1 k
Ω
0 pf1.22 v 短的 打开
GNDNR
FB
在 输出
EN
V
在
V
输出
R1
C1
R2
1
µ
F
1
µ
F
0.01
µ
F
TPS730xx
RegulatorProtection
tps73001,tps73018
TPS73025
tps73030,tps73033
SBVS054A–NOVEMBER2004–REVISEDNOVEMBER2004
applicationinformation(持续)
figure17.tps73001adjustableldoregulatorprogramming
thetps730xxpmos-passtransistorhasabuilt-inbackdiodethatconductsreversecurrentwhentheinput
voltagedropsbelowtheoutputvoltage(e.g.,duringpower-向下).currentisconductedfromtheoutputtothe
inputandisnotinternallylimited.ifextendedreversevoltageoperationisanticipated,externallimitingmightbe
适合的.
thetps730xxfeaturesinternalcurrentlimitingandthermalprotection.duringnormaloperation,thetps730xx
limitsoutputcurrenttoapproximately400ma.whencurrentlimitingengages,theoutputvoltagescalesback
linearlyuntiltheovercurrentconditionends.whilecurrentlimitingisdesignedtopreventgrossdevicefailure,
careshouldbetakennottoexceedthepowerdissipationratingsofthepackageortheabsolutemaximum
voltageratingsofthedevice.ifthetemperatureofthedeviceexceedsapproximately165
°
c,热的-保护
circuitryshutsitdown.oncethedevicehascooleddowntobelowapproximately140
°
c,regulatoroperation
重新开始.
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