TPS2149

TPS2159

SLVS401 – AUGUST 2001

5

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electrical characteristics over recommended operating junction-temperature range,

2.9 V

enable input, ENx (active low)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

II

Input current, pullup (source)

VI(ENx) = 0 V

5

µA

enable input, ENx (active high)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

II

Input current, pulldown (sink)

VI(ENx) = 5 V

5

µA

logic output, OC

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Current sinking at VO = 0.4 V

1

mA

thermal shutdown characteristics

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

First thermal shutdown (shuts down switch or regulator

in overcurrent)

Occurs at or above specified temperature

when overcurrent is present.

120

Recovery from thermal shutdown

110

°C

Second thermal shutdown (shuts down all switches and

regulator)

Occurs on rising temperature, irrespective of

overcurrent.

155

°C

Second thermal shutdown hysteresis

10