AOZ1401DI

Rev. 1.0 August 2011

www.aosmd.com

Page 2 of 14

Ordering Information

All AOS products are offered in packages with Pb-free plating and compliant to RoHS standards.

Parts marked as Green Products (with “L” suffix) use reduced levels of Halogens, and are also RoHS compliant.

Please visit www.aosmd.com/web/quality/rohs_compliant.jsp for additional information.

Pin Configuration

Pin Description

Part Number

Ambient Temperature Range

Package

Environmental

AOZ1401DI

-40°C to +85°C

2 x 2 DFN-8

RoHS Compliant

1

2

3

4

8

7

6

5

OUT

ILIM

VBAT

ENB

Top View

(DFN 2x2)

AOZ1401DI

VIN

GND

NC

FAULTB

Pin

Name

Pin

Number

I/O

Description

VIN

1

I

Input power, connect to external DC supply. Connect external 1μF (minimum) to GND

GND

2

Ground terminal

NC

3

These pins may have internal circuits used for test purposes. Do not make any external

connections at these pins for normal operation.

FAULTB

4

O

Open-drain output, device status. FAULTB = LO indicates that the input FET has been turned

off due to input over-voltage or input over-current conditions, or because the battery voltage is

outside safe limits.

ENB

5

I

Chip enable input. Active low. When ENB = HI, the input FET is off. Internally pulled down.

VBAT

6

I

Battery voltage sense input. Connect to pack positive terminal through a resistor.

ILIM

7

I/O

Input over-current threshold programming. Connect a resistor to GND to set the over-current

threshold.

OUT

8

O

Output terminal to the charging system. Connect external 1μF capacitor (minimum) to GND

Thermal PAD

There is an internal electrical connection between the exposed thermal pad and the GND pin

of the device. The thermal pad must be connected to the same potential as the GND pin on

the printed circuit board. Do not use the thermal pad as the primary ground input for the

device. GND pin must be connected to ground at all times.