AOZ3018PI_2

AOZ3018PI_2 Datasheet


AOZ3018PI

Part Datasheet
AOZ3018PI_2 AOZ3018PI_2 AOZ3018PI_2 (pdf)
PDF Datasheet Preview
AOZ3018PI

EZBuck 5 A Synchronous Buck Regulator

The AOZ3018 is a high efficiency, simple to use, 5 A synchronous buck regulator. The AOZ3018 operates from a V to 18 V input voltage range, and provides up to 5 A of continuous output current with an output voltage adjustable down to V.

The AOZ3018 comes in an exposed pad SO-8 package and is rated over a -40 °C to +85 °C operating ambient temperature range.

V to 18 V operating input voltage range 55 internal high-side switch and 19 internal
low-side switch at 12 V Up to 95 % efficiency External soft start Output voltage adjustable to V 5 A continuous output current 500 kHz PWM operation Cycle-by-cycle current limit Pre-bias start-up Short-circuit protection Thermal shutdown Exposed pad SO-8 package

Point of load DC/DC converters LCD TV Set top boxes DVD and Blu-ray players/recorders Cable modems

C1 10µF

RC CC

AOZ3018 LX

COMP

AGND

PGND

L1 4.7µH R1 R2

VOUT

C2, C3 22µF

Figure V, 5 A Synchronous Buck Regulator, Fs = 500 kHz

Page 1 of 14
Ordering Information

Part Number AOZ3018PI

Ambient Temperature Range -40 °C to +85 °C

Package EPAD SO-8

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

Pin Configuration

PGND 1 VIN 2

AGND 3 FB 4

PAD LX
8 LX 7 SS 6 EN 5 COMP

Exposed Pad SO-8

Top View

AOZ3018PI

Environmental Green Product

Pin Description

Pin Number 1 2

Pin Name PGND VIN

AGND

COMP
7 8 Exposed pad

SS LX Sense

Pin Function

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. If on/off control in not needed, connect EN to VIN and do not leave it open.

Soft-start pin. 5 µA current charging current.

Switching node. This pin has to be externally connected to exposed pad LX through PCB.

Switching node. LX is the drain of the internal power FET. LX is used as the thermal pad of the power stage.

Page 2 of 14

Block Diagram

AOZ3018PI

UVLO
5V LDO

Internal
& POR

Regulator

Reference & Bias

Softstart
More datasheets: DIN-048CSC-R1L-KR | FAN6300SZ | FAN6300DZ | 13832 | 3011R-17X-0001 | M3611 SL001 | M3611 SL002 | M3611 SL005 | 18078ACU | 240-022


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 AOZ3018PI_2 Datasheet file may be downloaded here without warranties.

Datasheet ID: AOZ3018PI_2 516323