General Description

The MAX724/MAX726 are monolithic, bipolar, pulsewidth modulation (PWM), switch-mode DC-DC regulators optimized for step-down applications. The MAX724 is rated at 5A, and the MAX726 at 2A. Few external components are needed for standard operation because the power switch, oscillator, and control circuitry are all on-chip. Employing a classic buck topology, these regulators perform high-current stepdown functions, but can also be configured as inverters, negative boost converters, or flyback converters.

Features

♦ Input Range: Up to 40V

♦ 5A On-Chip Power Switch (MAX724) 2A On-Chip Power Switch (MAX726)

♦ Adjustable Output: 2.5V to 35V

♦ 100kHz Switching Frequency

♦ Excellent Dynamic Characteristics

♦ Few External Components

♦ 8.5mA Quiescent Current

♦ TO-220 Package

Applications

Distributed Power from High-Voltage Buses

High-Current, High-Voltage Step-Down Applications

High-Current Inverter

Negative Boost Converter

Multiple-Output Buck Converter

Isolated DC-DC Conversion