aoz1056 Alpha & Omega Semiconductor, aoz1056 Datasheet - Page 2

• Manufacturer Part Number: aoz1056
• Description: Ezbucktm 2a Simple Buck Regulator
• Manufacturer: Alpha & Omega Semiconductor

Ordering Information
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Pin Configuration
Pin Description
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.
Pin Number
Rev. 1.2 September 2008
Part Number
AOZ1056AIL
1
2
3
4
5
6
7
8
www.aosmd.com/web/quality/rohs_compliant.jsp
Pin Name
COMP
AGND
PGND
Ambient Temperature Range
V
EN
SS
FB
LX
IN
-40°C to +85°C
Supply voltage input. When V
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.
Reference connection for controller section. Also used as thermal connection for controller
section. Electrically needs to be connected to PGND.
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 V
floating.
PWM output connection to inductor. Thermal connection for output stage.
Power ground. Electrically needs to be connected to AGND.
COMP
AGND
VIN
SS
www.aosmd.com
1
2
3
4
for additional information.
(Top View)
SO-8
IN
rises above the UVLO threshold the device starts up.
8
7
6
5
Package
Pin Function
PGND
LX
EN
FB
SO-8
IN
if not used. Do not leave the EN pin
Environmental
RoHS Compliant
Green Product
AOZ1056
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