Datasheet

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TPS54372
SLVS430D – JUNE 2002 – REVISED FEBRUARY 2005
ELECTRICAL CHARACTERISTICS (continued)
T
J
= –40 ° C to 125 ° C, V
I
= 3 V to 6 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
PWM COMPARATOR
PWM comparator propagation delay time,
PWM comparator input to PH pin (excluding 10-mV overdrive
(1)
70 85 ns
dead time)
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, STATUS I
sink
= 2.5 mA 0.18 0.30 V
Leakage current, STATUS V
I
= 3.6 V 1 µA
CURRENT LIMIT
V
I
= 3 V
(1)
4 6.5
Current limit A
V
I
= 6 V
(1)
4.5 7.5
Current limit leading edge blanking time
(1)
100 ns
Current limit total response time
(4)
200 ns
THERMAL SHUTDOWN
Thermal shutdown trip point
(4)
135 150 165 ° C
Thermal shutdown hysteresis
(4)
10 ° C
OUTPUT POWER MOSFETs
V
I
= 6 V
(5)
59 88
r
DS(on)
Power MOSFET switches m Ω
V
I
= 3 V
(5)
85 136
(4) Specified by design
(5) Matched MOSFETs low-side r
DS(on)
, and high-side r
DS(on)
production tested.
4