4

2

3

8

12

11

10

9

15

14

13

1

5

6

7

TPS2420

16

CT

VIN

VOUT

VIN

VIN

VIN

VOUT

VOUT

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

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.

6

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