MPQ8632-12 2.5-18V, 4A, 200kHz Synchronous Step-down Converter

MPQ8632-12 2.5-18V, 4A, 200kHz Synchronous Step-down Converter

Key Specifications

Features

• Low Input Voltage Range from 2.5V: -- 2.5V to 18V with External 5V Bias -- 4.5V to 18V with Internal Bias
• Optimal Low RDS(ON) Internal Power MOSFETs Per Device
• Proprietary Switching Loss Reduction Technique
• Adaptive COT for Ultrafast Transient Response
• 0.5% Reference Voltage Over 0C to 70C Junction Temperature Range
• Programmable Soft Start Time
• Pre-Bias Start up
• Programmable Switching Frequency from 200kHz to 1MHz
• Non-latch OCP, OVP and Thermal Shutdown Protection
• Output Adjustable from 0.611V to 13V

Applications

• Telecom and Networking Systems
• Base Stations
• Personal Video Recorders
• Flat Panel Television and Monitors

Design Notes

• The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
• Keep the input loop short — high di/dt at the switch node sets conducted EMI.
• Power switches are integrated, so the thermal path is the PCB copper under the pad.

Common Questions