AMS4154

www.DataSheet4U.com Advanced Monolithic Systems AMS4154 2A OUTPUT PWM BUCK CONVERTER RoHS compliant FEATURES Stable with low ESR Output Ceramic Capacitors Up to 99% On time 2A Output Current Wide Operating Input Voltage Range 5.5V to 32V Fixed 330 kHz Frequency Thermal Shutdown Cycle-by-cycle Over Current Protection Under Voltage Lockout 5V reference output Adjustable output from 0.6V APPLICATIONS Battery Chargers Portable (Notebook) Computers Industrial power supply Point of regulation for high performance electronics Consumer Electronics Audio Power Amplifiers Distributed Power Systems Pre-Regulator for Linear Regulators LCD TVs and LCD monitors Automotive electronics GENERAL DESCRIPTION The AMS4154 is a step-down converter for high voltage applications. Current mode operation provides easier compensation and fast transient response. Internal cycle-by-cycle current limiting and thermal shutdown provides the necessary protection in faults situation. A 5V reference voltage is available that can supply up to 2mA current. ORDERING INFORMATION OUTPUT VOLTAGE Adjustable PACKAGE TYPE 8 Lead SOIC AMS4154S -25°C to 125°C TEMP. RANGE TYPICAL APPLICATION PIN CONNECTIONS 8L SOIC SO Package (S) VIN ON OFF BST 470n L1 2.5V/2A EN LX 4.7 µH 31.7K BST VIN LX GND 1 2 3 4 8 REF 7 EN 6 COMP 5 F/B COMP 10µF 3.9K VREF 22µF GND F/B B220 10K Top View 4.7n Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0...