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