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MAX1549 Datasheet Fixed-Frequency Step-Down Controller

Manufacturer: Maxim Integrated (now Analog Devices)

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General Description

The MAX1549 dual pulse-width modulation (PWM) stepdown controller provides the high efficiency, excellent transient response, and high DC-output accuracy necessary for generating low-voltage chipset and RAM power supplies in notebook computers.

The controller employs a fixed-frequency, current-mode PWM architecture that does not require complex compensation.

The MAX1549 also interleaves the dual step-down regulators, minimizing the input capacitor requirements.

Overview

19-3165; Rev 0; 1/04 KIT ATION EVALU E L B AVAILA www.DataSheet4U.

Key Features

  • differential current-sense inputs for accurately sensing the inductor current across an external current-sense resistor in series with the output to ensure reliable overload protection. Alternatively, the controller can provide overload protection using lossless inductor current-sensing methods, lowering power dissipation and reducing system cost. Single-stage buck conversion allows the MAX1549 to directly step down high-voltage batteries for the highest possible efficiency. Very low output-volt.

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number Description
MAX1540 Dual Step-Down Controllers
MAX1540A Dual Step-Down Controllers
MAX1541 Dual Step-Down Controllers
MAX1545 Quick-PWM Controllers
MAX15000 Current-Mode PWM Controllers
MAX15001 Current-Mode PWM Controllers
MAX15003 Triple-Output Buck Controller
MAX15004 4.5V to 40V Input Automotive Flyback/Boost/SEPIC Power-Supply Controllers
MAX15005 4.5V to 40V Input Automotive Flyback/Boost/SEPIC Power-Supply Controllers
MAX15006 ultra-low quiescent-current linear regulators