AOZ1031AI Alpha & Omega Semiconductor Inc, AOZ1031AI Datasheet - Page 2

• Manufacturer Part Number: AOZ1031AI
• Description: IC BUCK SYNC ADJ 3A SO8
• Manufacturer: Alpha & Omega Semiconductor Inc
• Series: EZBuck™r
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of AOZ1031AI

• Featured Product: The AOZ103x Family Synchronous Buck Regulator
• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 V ~ 18 V
• Current - Output: 3A
• Frequency - Switching: 600kHz
• Voltage - Input: 4.5 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 785-1253-2

Ordering Information
Pin Configuration
Pin Description
Pin Number
Rev. 1.6 March 2010
7, 8
1
2
3
4
5
6
Part Number
AOS Green Products use reduced levels of Halogens, and are also RoHS compliant.
Please visit
AOZ1031AI
Pin Name
www.aosmd.com/web/quality/rohs_compliant.jsp
COMP
PGND
AGND
VIN
EN
FB
LX
Ambient Temperature Range
Power ground. PGND needs to be electrically connected to AGND.
Supply voltage input. When VIN rises above the UVLO threshold and EN is logic high, the
device starts up.
Analog ground. AGND is the reference point for controller section. AGND needs to be
electrically connected to PGND.
Feedback input. The FB pin is used to set the output voltage via a resistive voltage divider
between the output and AGND.
External loop compensation pin. Connect a RC network between COMP and AGND to
compensate the control loop.
Enable pin. Pull EN to logic high to enable the device. Pull EN to logic low to disable the
device. Do not leave it open.
Switching node. PWM output connection to inductor.
-40°C to +85°C
PGND
AGND
VIN
FB
1
2
3
4
www.aosmd.com
(Top View)
SO-8
8
7
6
5
Pin Function
for additional information.
LX
LX
EN
COMP
Package
SO-8
Environmental
RoHS Compliant
Green Product
AOZ1031AI
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