Advanced Monolithic Systems, Inc.

www.advanced-monolithic.com

Phone (925) 443-0722

Fax (925) 443-0723

Advanced

AMS4106

Monolithic

5A SYNCHRONUS PWM BUCK CONVERTER

Systems

RoHS compliant

FEATURES

APPLICATIONS

• Internal MOSFET driver with Integrated High Side

• LCD TVs and LCD monitors

• Uses External Low Side MOSFET

• Computer Peripherals

• Adjustable output voltage dawn to 0.600V

• Portable (Notebook) Computers

• External Clock Synchronization

• Industrial power supply

• Built in Start/Stop UVLO

• Point of regulation for high performance electronics

• Over Current and Thermal Protection

• Consumer Electronics

• Shutdown supply current < 1uA

• Audio Power Amplifiers

• Frequency range 100KHz to 750KHz

GENERAL DESCRIPTION

The AMS4106 is a medium output current synchronous buck converter. The high side device is integrated into the device. The

AMS4106 provides an adaptive gate drive for the external FET. For low current operation this can be replaced with a Schottky

diode allowing asynchronous operation. The part has either a fixed internal present PWM frequency of 250 kHz, or externally

adjustable up to 600 kHz, allowing smaller inductors where efficiency is less critical and faster transient response is needed.

The part uses current mode control for simple compensation and ease of use with low ESR capacitors. It uses a programmable

soft start to reduce inrush current and allow large output capacitors to be used where very low ripple is required. The part has

enable pin with virtual zero power in shutdown mode. A power good is provided with open collector to facilitate power ready

functions. The part is available in SOIC 16 thermally enhanced packages.

ORDERING INFORMATION

TYPICAL APPLICATION

PIN CONNECTIONS

OUTPUT

PACKAGE TYPE

TEMP.

VOLTAGE

16 Lead SOIC

RANGE

Adjustable

AMS4106S

-25ºC to 125ºC

16 Lead SOIC

(S)

1

2

16

4

3

15

13

14

LX

F SET

ENABLE

FDR

PGND

5

6

12

8

7

11

9

10

GND

BST

COMP

SS

PWRGD

VPWR

VPWR

F/B

LX

LX

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