AOZ1037PI Alpha & Omega Semiconductor Inc, AOZ1037PI Datasheet - Page 2

• Manufacturer Part Number: AOZ1037PI
• Description: IC BUCK SYNC ADJ 5A SO8
• Manufacturer: Alpha & Omega Semiconductor Inc
• Series: EZBuck™r
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of AOZ1037PI

• 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: 5A
• Frequency - Switching: 500kHz
• 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) Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 785-1256-2

Ordering Information
Pin Configuration
Pin Description
Pin Number
Rev. 1.1 September 2010
Part Number
AOZ1037PI
Pad
AOS Green Products use reduced levels of Halogens, and are also RoHS compliant.
Please visit
1
2
3
4
5
6
7
8
Pin Name
www.aosmd.com/web/quality/rohs_compliant.jsp
PGOOD
COMP
PGND
AGND
V
EN
NC
FB
LX
IN
Ambient Temperature Range
Supply voltage input. When V
starts up.
connected to PGND.
Feedback input. The FB pin is used to set the output voltage via a resistor divider between the out-
put and AGND.
External loop compensation pin. Connect a RC network between COMP and AGND to compen-
sate the control loop.
Enable pin. Pull EN to logic high to enable the device. Pull EN to logic low to disable the device. if
on/off control is not needed, connect it to V
Power Good Output. PGOOD is an open-drain output that indicates the status of output voltage.
PGOOD is pulled low when output is below 90% of the normal regulation.
No Connect. Pin 8 is not internally connected.
Switching node. LX is the drain of the internal PFET. LX is used as the thermal pad of the power
stage.
Power ground. PGND needs to be electrically connected to AGND.
Analog ground. AGND is the reference point for controller section. AGND needs to be electrically
-40°C to +85°C
PGND
AGND
VIN
FB
Exposed Pad SO-8
1
2
3
4
www.aosmd.com
(Top View)
(LX)
PAD
IN
rises above the UVLO threshold and EN is logic high, the device
for additional information.
EPAD SO-8
8
7
6
5
Package
Pin Function
IN
NC
PGOOD
EN
COMP
and do not leave it open.
Environmental
Green Product
AOZ1037
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