Datasheet
4
2
3
8
12
11
10
9
15 14 13
1
5 6 7
TPS2420
16
LTCH
GND
CT
IFLT
IMAX
VIN
EN
IMON
VOUT
VIN
VIN
VIN
VOUT
VOUT
FLT
PG
TPS2420
SLUS903E –JANUARY 2009–REVISED MAY 2013
www.ti.com
DEVICE INFORMATION
PINOUT DIAGRAM
TERMINAL FUNCTIONS
PIN
NAME I/O DESCRIPTION
NO.
EN 16 I Device is enabled when this pin is pulled low.
1
2
VIN I Power in and control supply voltage .
3
4
If low, the TPS2420 will attempt to restart after an overcurrent fault. If floating (high) the device will latch
LTCH 6 I
off after an overcurrent fault and will not attempt to restart until EN or V
IN
is cycled off and on.
GND 5 — Ground.
IMAX 7 I A resistor to ground sets the current limit level.
IFLT 8 I A resistor to ground sets the fault current level.
CT 9 I/O A capacitor to ground sets the fault time.
IMON 13 O A scaled down current which indicates the current through the device.
10
VOUT 11 O Output to the load.
12
PG 14 O Power Good low represents the output voltage is within 300 mV of the input voltage.
FLT 15 O Fault low indicated the fault time has expired and the FET is switched off.
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