AP91352

Document number: DS38109 Rev. 1 - 2

1 of 12

www.diodes.com

October 2015

© Diodes Incorporated

AP91352

SAS DISABLE +5V eFUSE WITH INTEGRATED ISOFET

Description

The eFuse is a 5V protection device with a bidirectional switch that

incorporates input slew rate control to reduce input surge current and

reverse current detection to prevent discharge to VCC from VOUT.

The eFuse protection features include under voltage lockout, a fixed

2.5A current limit, trimmed fast response over voltage protection and

thermal shutdown. The EN/FAULT line is a tri-state bidirectional

interface that can be used to disable the output by pulling the line low

through an external open drain device. If a thermal fault occurs, the

voltage on the pin will go to an intermediate voltage indicating a fault

and it can be connected to another device to cause simultaneous shut

down. The SAS pin is an ESD protected interface that allows direct

external control of the eFuse. Driving the SAS pin high pulls the

enable line low causing the eFuse to shutdown and enter a low

quiescent current state.

The integrated Isofet latches off when the reverse current is detected.

This can be reset only by triggering the under voltage lock out, by

EN/FAULT pin or when voltage on the output pin (VOUT) falls below

the supply pin voltage (VCC) in AP91352.

The AP91352 is available in a standard Green W-QFN3020-12

package and is RoHS compliant.

Features



SAS Disable



2.1V Signal Disables the eFuse



ESD Compliant to1kV HBM and 500V CDM



Integrated Isofet that latches off when reverse current is

detected. Latch off is reset by



SAS pin



UVLO Trigger



EN/FAULT Pin



Input Tolerant of Continuous 12V



50m

 Typical Total on Resistance



Fixed 2.5A Over Current Protection (OCP)



Over Voltage Protection (OVP)



Trimmed 5.5V to 6.0V Fast Response



50µs Latch off



Fixed 13ms ±20% Slew Rate Control (SRC)



Over Temperature Protection (OTP)



Under Voltage Lockout (UVLO)



Thermally Efficient Low Profile Package, W-QFN3020-12



Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)



Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

(Top View)

W-QFN3020-12

6

11

10

9

8

7

12

1

2

3

4

5

VOUT

VOUT

VOUT

NC

NC

VCC

VCC

VCC

SAS

EN/FAULT

NC

GND

13

Applications



HHD Drives



SSD Drives



Mother Board Power Management



Printer Load Power Management



Fan Drives

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com for more i

nformation about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-

free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.