TPS2145, TPS2147

TPS2155, TPS2157

SLVS333 − AUGUST 2001

5

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electrical characteristics over recommended operating junction-temperature range,

2.9 V

undervoltage lockout at SWIN2

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

UVLO Threshold

2.2

2.85

V

Hysteresis (see Note 1)

260

mV

Deglitch (see Note 1)

50

µs

NOTE 1. Specified by design, not tested in production.

electrical characteristics over recommended operating junction-temperature range,

2.9 V

fixed-voltage regulator, 3.3 V

PARAMETER

TEST CONDITIONS†

MIN

TYP

MAX

UNIT

VO

Output voltage, dc

VI(VIN/SWIN1) = 4.25 V to 5.25 V,

IO(LDO_OUT) = 0.5 mA to 200 mA

3.20

3.3

3.40

V

Dropout voltage

VI(VIN/SWIN1) = 3.2 V,

IO(LDO_OUT) = 200 mA,

0.35

V

Dropout voltage

I(VIN/SWIN1)

IO(LDO_OUT) = 200 mA,

IO(OUT1) = 150 mA

0.35

V

Line regulation voltage (see Note 1)

VI(VIN/SWIN1) = 4.25 V to 5.25 V,

IO(LDO_OUT) = 5 mA

0.1

%/V

Load regulation voltage (see Note 1)

VI(VIN/SWIN1) = 4.25 V,

IO(LDO_OUT) = 5 mA to 200 mA

0.4%

1.15%

IOS

Short-circuit current limit

VI(VIN/SWIN1) = 4.25 V,

LDO_OUT connected to GND

0.275

0.33

0.55

A

Ilkg(R)

Reverse leakage current into

LDO_OUT

VO(LDO_OUT) = 3.3 V,

VI(VIN/SWIN1) = 0 V,

VI(LDO_EN) = 0 V

10

µA

Ilkg(R)

Reverse leakage current into

LDO_OUT

VO(LDO_OUT) = 5.5 V,

VI(VIN/SWIN1) = 2.9 V,

VI(LDO_EN) = 0 V

10

µA

ton

Turnoff time, LDO_EN

transitioning low (see Note 1)

RL = 16 Ω, CL(LDO_OUT) = 10 µF

0.25

1

ms

toff

Turnon time, LDO_EN

transitioning high (see Note 1)

RL = 16 Ω, CL(LDO_OUT) = 10 µF

0.1

1

ms

Ramp-up time, LDO_OUT (0% to 90%)

VI(LDO_EN) = 5 V, VIN/SWIN1 ramping up from 10%

to 90% in 0.1 ms, RL = 16 Ω,

CL(LDO_OUT) = 10 µF

0.1

1

ms

Power supply rejection

f = 1 kHz, CL(LDO_OUT) = 4.7 µF,

ESR = 0.25

Ω, IO = 5 mA,

VI(VIN/SWIN1)p−p = 100 mV

50

dB

† Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately.

NOTE 1. Specified by design, not tested in production.