AOZ1056AI datasheet(2/15 Pages) AOSMD

2 / 15 page

AOZ1056

Rev. 1.2 September 2008

www.aosmd.com

Page 2 of 15

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

AOZ1056AIL

-40°C to +85°C

SO-8

RoHS Compliant

Green Product

Pin Number

Pin Name

Pin Function

1VIN

Supply voltage input. When VIN rises above the UVLO threshold the device starts up.

Soft-Start pin. Connect a capacitor from SS to GND to set the soft-start period. Minimum

external soft-start capacitor of 780pF is required, and the corresponding soft-start time is

about 100µs.

AGND

Reference connection for controller section. Also used as thermal connection for controller

section. Electrically needs to be connected to PGND.

COMP

External loop compensation pin.

The FB pin is used to determine the output voltage via a resistor divider between the output

and GND.

The enable pin is active high. Connect EN pin to VIN if not used. Do not leave the EN pin

floating.

PWM output connection to inductor. Thermal connection for output stage.

PGND

Power ground. Electrically needs to be connected to AGND.

PGND

VIN

AGND

COMP

SO-8

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