AOZ1212AIL

AOZ1212AIL Datasheet


AOZ1212

Part Datasheet
AOZ1212AIL AOZ1212AIL AOZ1212AIL (pdf)
Related Parts Information
AOZ1212AI_5 AOZ1212AI_5 AOZ1212AI_5
AOZ1212DIL AOZ1212DIL AOZ1212DIL
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AOZ1212

EZBuck 3A Simple Buck Regulator

The AOZ1212 is a high efficiency, simple to use, 3A buck regulator flexible enough to be optimized for a variety of applications. The AOZ1212 works from a 4.5V to 27V input voltage range, and provides up to 3A of continuous output current on each buck regulator output. The output voltage is adjustable down to 0.8V.

The AOZ1212 comes in an SO-8 or DFN-8 package and is rated over a -40°C to +85°C ambient temperature range.
● 4.5V to 27V operating input voltage range
● internal NFET, efficiency up to 95%
● Internal soft start ● Output voltage adjustable down to 0.8V ● 3A continuous output current ● Fixed 370kHz PWM operation ● Cycle-by-cycle current limit ● Short-circuit protection ● Thermal shutdown ● Small size SO-8 or DFN-8 package
● Point of load DC/DC conversion ● Set top boxes ● DVD drives and HDD ● LCD monitors and TVs ● Cable modems ● Telecom/networking/datacom equipment

C1 22µF

AOZ1212

VBIAS

COMP GND

RC CC

L1 6.8µH

VOUT

R1 C2, C3 22µF

Figure 3.3V/3A Buck Regulator

Page 1 of 18

AOZ1212
Ordering Information

Ambient Temperature Range

AOZ1212AI AOZ1212DI
-40°C to +85°C -40°C to +85°C

Package SO-8
5 x 4 DFN-8

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

Environmental

RoHS Compliant Green Product

Pin Configuration

LX 1 BST 2 GND 3

SO-8

Top View
8 VBIAS 7 VIN 6 EN 5 COMP

LX 1 BST 2 GND 3

VIN GND
8 VBIAS 7 VIN 6 EN 5 COMP

DFN-8

Top Thru View

Pin Description

Pin Number Pin Name

COMP

VBIAS

Pin Function

PWM output connection to inductor. LX pin needs to be connected externally. Thermal connection for output stage.

Bootstrap voltage input. High side driver supply. Connected to 0.1µF capacitor between BST and LX.

Ground.

Feedback input. It is regulated to 0.8V. The FB pin is used to determine the PWM output voltage via a resistor divider between the output and GND.

External loop compensation. Output of internal error amplifier. Connect a series RC network to GND for control loop compensation.

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

Supply voltage input. Range from 4.5V to 27V. When VIN rises above the UVLO threshold the device starts up. All VIN pins need to be connected externally. Compensation pin of internal linear regulator. Place put a 1µF capacitor between this pin and ground.

Page 2 of 18

Block Diagram

VBIAS EN

UVLO & POR
5V LDO Regulator

Reference & Bias

Softstart
0.8V

GM = 200µA/V

EAmp
More datasheets: FLUKE-52-2 60HZ | FLUKE-561 | C25 | FLUKE-1587 ET | FLUKE-1587 MDT | FLUKE-53-2 60HZ | FLUKE-54-2 60HZ | T5-H5-1AC KIT/US | AOZ1212AI_5 | AOZ1212DIL


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Datasheet ID: AOZ1212AIL 516312