TPS54872

SLVS436C − JULY 2002 − REVISED FEBRUARY 2005

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4

ELECTRICAL CHARACTERISTICS (continued)

TJ = –40°C to 125°C, VI = 4 V to 6 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SLOW-START/ENABLE

Enable threshold voltage, ENA

0.82

1.20

1.40

V

Enable hysteresis voltage, ENA(1)

0.03

V

Falling edge deglitch, ENA(1)

2.5

µs

Internal slow-start time

2.6

3.35

4.1

ms

STATUS

Output saturation voltage, PWRGD

Isink = 2.5 mA

0.18

0.30

V

Leakage current, PWRGD

VI = 3.6 V

1

µA

CURRENT LIMIT

Current limit

VI = 4.5 V

9

11

A

Current limit leading edge blanking time

100

ns

Current limit total response time

200

ns

THERMAL SHUTDOWN

Thermal shutdown trip point(1)

135

150

165

°C

Thermal shutdown hysteresis(1)

10

°C

OUTPUT POWER MOSFETS

rDS(on) Power MOSFET switches

VI = 4.5 V(4)

30

60

m

Ω

rDS(on) Power MOSFET switches

VI = 6 V(4)

25

50

m

Ω

(1) Specified by design

(2) Static resistive loads only

(3) Specified by the circuit used in Figure 7

(4) Matched MOSFETs low-side rDS(on) production tested, high-side rDS(on) production tested.