Fairchild Semiconductor RC5054
The RC5054A provides complete control and protection for a DC-DC converter optimized for high-performance microprocessor applications. It is designed to drive two N-Channel MOSFETs in a synchronous-rectified buck topology. The RC5054A integrates all of the control, output adjustment, monitoring and protection functions into a single package.| Part No. | RC5054 |
|---|---|
| Datasheet | RC5054 Download |
| Manufacturer |  Fairchild Semiconductor |
| Description | Programmable Synchronous DC-DC Converter Controller for Low Voltage Microprocessors |
| Buy | Stock & Price |
FEATURES
● Drives Two N-Channel MOSFETs● Operates from +5V Power 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
● TTL Compatible 5 Bit Digital-to-Analog Output Voltage Selection - Wide Range - 1.3VDC to 3.5VDC - 0.1V Binary Steps from 2.1VDC to 3.5VDC - 0.05V Binary Steps from 1.3VDC to 2.1VDC
● 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 1MHz
APPLICATIONS
● Power Supply for Pentium®, Pentium Pro, PowerPC™ and Alpha™ Microprocessors● High-Power 5V to 3.xV DC-DC Regulators
● Low-Voltage Distributed Power Supplies
DESCRIPTION
The output voltage of the converter is easily adjusted and precisely regulated. The RC5054A includes a 5-input digitalto-analog converter (DAC) that adjusts the output voltage from 2.1VDC to 3.5VDC in 0.1V increments and from 1.3VDC to 2.1VDC in 0.
