MCHPMCP1640
Overview
The MCP1640 is a high-efficiency, fixed-frequency, synchronous step-up DC-DC converter designed to provide a 3.3V supply from low-voltage sources. It features a low start-up voltage of 0.65V, making it ideal for systems powered by single-cell alkaline, NiMH, or NiCd batteries.
Why Choose This Part
The device achieves high efficiency across a wide load range by automatically switching between PFM and PWM modes. Its low 14.5 microamp quiescent current extends battery life in standby, while integrated features like reverse battery protection and an ON/OFF switch simplify power path design.
Applications
Getting Started
For rapid prototyping, use the MCP1640EV Evaluation Board to test efficiency and transient response. Ensure the input capacitor is placed as close as possible to the VIN and GND pins to minimize switching noise in battery-powered layouts.
MCP1640 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Package | Stock |
|---|---|---|
| MCP1640 (this part) | — | 28 |
| MCP1640T-I/MC | VFDFN-8 | 13,264 |
| MCP1640T-I/CHY | 6-23 | 40,216 |
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