Description
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.
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 MOSFETâs 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
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