AOZ1021AI_4

AOZ1021AI_4 Datasheet

AOZ1021

Part	Datasheet
AOZ1021AI_4	AOZ1021AI_4 (pdf)

Related Parts	Information
AOZ1021AI	AOZ1021AI
AOZ1021AI_2	AOZ1021AI_2
AOZ1021AIL_3	AOZ1021AIL_3
AOZ1021AIL_2	AOZ1021AIL_2
AOZ1021AI-5L	AOZ1021AI-5L
AOZ1021AI_3	AOZ1021AI_3
AOZ1021AIL	AOZ1021AIL

PDF Datasheet Preview
AOZ1021 EZBuck 3A Synchronous Buck Regulator Not Recommended For New Designs The AOZ1021 is a synchronous high efficiency, simple ● 4.5V to 16V operating input voltage range to use, 3A buck regulator. The AOZ1021 works from a ● Synchronous rectification internal high-side 4.5V to 16V input voltage range, and provides up to 3A of continuous output current with an output voltage adjustable down to 0.8V. The AOZ1021 comes in an SO-8 packages and is rated over a -40°C to +85°C ambient temperature range. Replacement Part AOZ3013PI same package switch and Internal low-side switch s ● High efficiency up to 95% n ● Internal soft start ig ● initial output accuracy ● Output voltage adjustable to 0.8V es ● 3A continuous output current D ● Fixed 500kHz PWM operation mended For New AOZ3103DI smaller package ● Cycle-by-cycle current limit ● Pre-bias start-up ● Short-circuit protection ● Thermal shutdown ● Small size SO-8 package ● Point of load DC/DC conversion ● PCIe graphics cards ● Set top boxes ● DVD drives and HDD ● LCD panels ● Cable modems ● Telecom/networking/datacom equipment om Typical Application c VIN eC1 R22uF Not Ceramic 10kΩ VIN EN AOZ1021 LX L1 4.7uH VOUT COMP C2, C3 22uF Ceramic AGND PGND Figure 3.3V/3A Buck Regulator Page 1 of 15 AOZ1021 Ordering Information Ambient Temperature Range AOZ1021AI -40°C to +85°C AOZ1021AIL -40°C to +85°C Package SO-8 SO-8 AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit for additional information. Environmental RoHS Green Product Pin Configuration PGND 1 VIN 2 AGND 3 FB 4 8 LX 7 LX 6 EN 5 COMP Designs SO-8 w Top View Ne Pin Description r Pin Number Pin Name Pin Function PGND Power ground. Electrically needs to be connected to AGND. Supply voltage input. When VIN rises above the UVLO threshold the device starts up. AGND Reference connection for controller section. Also used as thermal connection for controller section. e Electrically needs to be connected to PGND. The FB pin is used to determine the output voltage via a resistor divider between the output and GND. COMP External loop compensation pin. The enable pin is active HIGH. Connect resistor between this pin and VIN if not used. Do not m leave it open. Not Recom 7, 8 PWM outputs connection to inductor. Page 2 of 15 Block Diagram AOZ1021 UVLO 5V LDO Internal & POR Regulator Reference & Bias Softstart

PDF Datasheet Preview

AOZ1021

EZBuck 3A Synchronous Buck Regulator

Not Recommended For New Designs

The AOZ1021 is a synchronous high efficiency, simple
● 4.5V to 16V operating input voltage range
to use, 3A buck regulator. The AOZ1021 works from a
● Synchronous rectification internal high-side
4.5V to 16V input voltage range, and provides up to 3A of continuous output current with an output voltage adjustable down to 0.8V.

The AOZ1021 comes in an SO-8 packages and is rated over a -40°C to +85°C ambient temperature range.

Replacement Part AOZ3013PI same package
switch and Internal low-side switch
s ● High efficiency up to 95% n ● Internal soft start ig ● initial output accuracy
● Output voltage adjustable to 0.8V
es ● 3A continuous output current D ● Fixed 500kHz PWM operation
mended For New AOZ3103DI smaller package
● Cycle-by-cycle current limit ● Pre-bias start-up ● Short-circuit protection ● Thermal shutdown ● Small size SO-8 package
● Point of load DC/DC conversion ● PCIe graphics cards ● Set top boxes ● DVD drives and HDD ● LCD panels ● Cable modems ● Telecom/networking/datacom equipment
om Typical Application c VIN eC1 R22uF

Not Ceramic
10kΩ

VIN EN

AOZ1021 LX

L1 4.7uH

VOUT

COMP

C2, C3 22uF Ceramic

AGND

PGND

Figure 3.3V/3A Buck Regulator

Page 1 of 15

AOZ1021
Ordering Information

Ambient Temperature Range

AOZ1021AI
-40°C to +85°C

AOZ1021AIL
-40°C to +85°C

Package SO-8 SO-8

AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit for additional information.

Environmental RoHS

Green Product

Pin Configuration

PGND 1 VIN 2

AGND 3 FB 4
8 LX 7 LX 6 EN 5 COMP

Designs

SO-8
w Top View

Ne Pin Description
r Pin Number Pin Name

Pin Function

PGND Power ground. Electrically needs to be connected to AGND.

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

AGND Reference connection for controller section. Also used as thermal connection for controller section.
e Electrically needs to be connected to PGND.

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

GND.

COMP External loop compensation pin.

The enable pin is active HIGH. Connect resistor between this pin and VIN if not used. Do not
m leave it open.

Not Recom 7, 8

PWM outputs connection to inductor.

Page 2 of 15

Block Diagram

AOZ1021

UVLO
5V LDO

Internal
& POR

Regulator

Reference & Bias

Softstart

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AOZ1021AI_4 Datasheet file may be downloaded here without warranties.

Datasheet ID: AOZ1021AI_4 516300