www.ti.com
SLVS632 – JANUARY 2006
ELECTRICAL CHARACTERISTICS
T
J
= –40°C to 125°C, VIN = 5.5 V to 36.0 V (unless otherwise noted)
PARAMETER
SUPPLY VOLTAGE (VIN PIN)
VIN
I
Q
Input voltage range
Quiescent current
VSENSE = 2 V, Not switching, PH pin
open
Shutdown, ENA = 0 V
UNDER VOLTAGE LOCK OUT (UVLO)
Start threshold voltage, UVLO
Hysteresis voltage, UVLO
VOLTAGE REFERENCE
Voltage reference accuracy
OSCILLATOR
Internally set free-running frequency
Minimum controllable on time
Maximum duty cycle
ENABLE (ENA PIN)
Start threshold voltage, ENA
Stop threshold voltage, ENA
Hysteresis voltage, ENA
Internal slow-start time (0~100%)
CURRENT LIMIT
Current limit
Current limit hiccup time
THERMAL SHUTDOWN
Thermal shutdown trip point
Thermal shutdown hysteresis
OUTPUT MOSFET
R
DS-ON
High side power MOSFET switch
VIN = 5.5 V
VIN = 10 V – 36 V
150
110
230
mΩ
135
162
14
°C
°C
4.0
13
5.0
16
6.0
20
A
ms
6.6
0.5
450
8
10
1.3
V
V
mV
ms
87
400
500
150
89
600
200
kHz
ns
%
T
J
= 25°C
Io = 0 A – 3 A
1.202
1.196
1.221
1.221
1.239
1.245
V
5.3
330
5.5
V
mV
5.5
3
18
36
4.4
50
V
mA
µA
TEST CONDITIONS
MIN
TYP
MAX
UNIT
3
TI [ TEXAS INSTRUMENTS ]
