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MCP1643

Microchip
Part Number MCP1643
Manufacturer Microchip
Description 1 MHz Low Start-up Voltage Synchronous Boost LED Constant Current Regulator
Published May 11, 2018
Detailed Description MCP1643 1 MHz Low Start-up Voltage Synchronous Boost LED Constant Current Regulator Features • 1.6A Typical Peak Input ...
Datasheet PDF File MCP1643 PDF File

MCP1643
MCP1643

Overview
MCP1643 1 MHz Low Start-up Voltage Synchronous Boost LED Constant Current Regulator Features • 1.
6A Typical Peak Input Current Limit • Up to 550 mA LED Load Current • Low Start-up Voltage: 0.
65V (typical, 25 mA LED Current) • Low Operating Input Voltage: down to 0.
5V • Maximum Input Voltage < VLED < 5.
0V • Maximum Output Voltage: - 5.
0V - Overvoltage Protection • Low Reference Voltage: - VFB = 120 mV - Minimal Power Loss on Sense Resistor • Pulse-Width Modulation Mode Operation (1 MHz) • Internal Synchronous Rectifier • Internal Compensation • Inrush Current Limiting • Internal Soft-Start (240 µs typical) • Shutdown (EN = GND): - True Load Disconnect - Dimming Control by Variable Duty Cycle...


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