Features

• Drives Two N-Channel MOSFETs

• Operates from +5V or +12V Input

• Simple Single-Loop Control Design

- Voltage-Mode PWM Control

• Fast Transient Response

- High-Bandwidth Error Amplifier

- Full 0 to 100 Duty Ratio

• Excellent Output Voltage Regulation

- 1 Over Line Voltage and Temperature

• TTL-Compatible 5-Bit Digital-to-Analog Output

Voltage Selection

- Wide Range . . . . . . . . . . . . . . . . . . . 1.8VDC to 3.5VDC

- 0.1V Binary Steps . . . . . . . . . . . . . . . 2.1VDC to 3.5VDC

- 0.05V Binary Steps . . . . . . . . . . . . . 1.8VDC to 2.05VDC

• Power-Good Output Voltage Monitor

• Over-Voltage and Over-Current Fault Monitors

- Does Not Require Extra Current Sensing Element,

Uses MOSFET’s rDS(ON)

• Small Converter Size

- Constant Frequency Operation

- 200kHz Free-Running Oscillator Programmable from

50kHz to over 1MHz

Applications

• Power Supply for Pentium®, Pentium Pro, Pentium II,

PowerPC™, K6™, 6X86™ and Alpha™ Microprocessors

• High-Power 5V to 3.xV DC-DC Regulators

• Low-Voltage Distributed Power Supplies