AMS4106 View Datasheet(PDF) - Advanced Monolithic Systems Inc

Part Name

Description

MFG CO.

AMS4106

5A SYNCHRONUS PWM BUCK CONVERTER

Advanced Monolithic Systems Inc 

Advanced

Monolithic

Systems

FEATURES

• Internal MOSFET driver with Integrated High Side

• Uses External Low Side MOSFET

• Adjustable output voltage dawn to 0.600V

• External Clock Synchronization

• Built in Start/Stop UVLO

• Over Current and Thermal Protection

• Shutdown supply current < 1uA

• Frequency range 100KHz to 750KHz

AMS4106

5A SYNCHRONUS PWM BUCK CONVERTER

RoHS compliant

APPLICATIONS

• LCD TVs and LCD monitors

• Computer Peripherals

• Portable (Notebook) Computers

• Industrial power supply

• Point of regulation for high performance electronics

• Consumer Electronics

• Audio Power Amplifiers

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

OUTPUT PACKAGE TYPE

TEMP.

VOLTAGE

Adjustable

16 Lead SOIC

AMS4106S

RANGE

-25ºC to 125ºC

TYPICAL APPLICATION

PIN CONNECTIONS

16 Lead SOIC

(S)

PWRGD 1

SS 2

GND 3

VPWR 4

VPWR 5

VIN 6

COMP 7

F/B 8

16 FDR

15 PGND

14 LX

13 LX

12 LX

11 BST

10 ENABLE

9 F SET

Top View

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723

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