TPPM0301 datasheet(4/12 Pages) TI

Nome de Peças	TPPM0301

Descrição Electrónicos	400-mA LOW-DROPOUT REGULATOR WITH AUXILIARY POWER MANAGEMENT

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Fabricante Electrônico	TI [Texas Instruments]

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TPPM0301

400-mA LOW-DROPOUT REGULATOR

WITH AUXILIARY POWER MANAGEMENT

SLVS315 – SEPTEMBER 2000

4

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

electrical characteristics over recommended operating free-air temperature range, TA = 0°C to

70

°C, CL = 4.7 µF (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V(5VCC)/

V(5VAUX)

5-V inputs

4.5

5

5.5

V

I(Q)

Quiescent supply current

From 5VCC or 5VAUX terminals, IL = 0 to

400 mA

2.5

5

mA

(Q)

y

From 3.3VAUX terminal, IL = 0 A

250

500

µA

IL

Output load current

0.4

A

I(LIMIT)

Output current limit

3.3VOUT = 0 V

1

1.5

A

T(TSD)†

Thermal shutdown

3 3VOUT output shorted to 0 V

150

180

°C

Thys†

Thermal hysteresis

3.3VOUT output shorted to 0 V

15

°C

V(3.3VOUT)

3.3-V output

IL = 400 mA

3.135

3.3

3.465

V

CL

Load capacitance

Minimal ESR to insure stability of regulated

output

4.7

µF

Ilkg(REV)

Reverse leakage output current

Tested for input that is grounded.

3.3VAUX, 5VAUX or 5VCC = GND,

3.3VOUT = 3.3 V

50

µA

† Design targets only. Not tested in production.

5-V detect

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V(TO_LO)

Threshold voltage, low

5VAUX or 5VCC

↓

3.85

4.05

4.25

V

V(TO_HI)

Threshold voltage, high

5VAUX or 5VCC

↑

4.1

4.3

4.5

V

auxiliary switch

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

R(SWITCH)

Auxiliary switch resistance

5VAUX = 5VCC = 0 V,

3.3VAUX = 3.3 V,

IL = 150 mA

0.4

Ω

∆VO(∆VI)

Line regulation voltage

5VAUX or 5VCC = 4.5 V to 5.5 V

2

mV

∆VO(∆IO)

Load regulation voltage

20 mA < IL < 400 mA

40

mV

VI – VO

Dropout voltage

IL < 400 mA

1

V

thermal characteristics

PARAMETER

MIN

TYP

MAX

UNIT

R

θJC Thermal impedance, junction-to-case

38

°C/W

R

θJA

Thermal impedance, junction-to-ambient

97

°C/W

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