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MCP1661T-E/MNY

MCHPMCP1661T-E/MNY

Microchip Technology
Boost Switching Regulator IC Positive Adjustable 2.4V 1 Output 200mA 8-WFDFN Exposed Pad
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Overview

The MCP1661 is a high-voltage, fixed-frequency boost regulator designed to deliver up to 32V from a low-voltage input. Operating at a 500kHz switching frequency, it integrates a 1.3A low-side switch and provides a compact solution for generating bias voltages from battery or 5V rails.

Why Choose This Part

It offers a high level of integration with internal compensation and soft-start, reducing the external component count to just a few resistors, capacitors, and an inductor. The 1.3A internal switch allows for high output power despite the small 2x3 mm TDFN package footprint.

Applications

LCD Bias Supply
Generating the high-voltage positive rails required for small-to-medium LCD panels and backlighting.
12V/24V Industrial Rails
Stepping up 3.3V or 5V logic supplies to higher voltage rails for industrial sensors and actuators.
Avalanche Photodiode Biasing
Providing stable high-voltage bias for optical sensors in communication or measurement systems.

Key Specifications

Function Step-Up
Topology Boost
Output Type Adjustable
Mounting Type Surface Mount
Package / Case 8-WFDFN Exposed Pad
Current - Output 200mA
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 500kHz
Operating Temperature -40degC ~ 125degC (TA)
Synchronous Rectifier No
Voltage - Input (Max) 5.5V
Voltage - Input (Min) 2.4V
Voltage - Output (Max) 32V
Supplier Device Package 8-TDFN (2x3)
Voltage - Output (Min/Fixed) 2.4V

Getting Started

Designers should focus on a tight PCB layout for the power ground and output feedback loop to minimize noise at the 500kHz switching frequency. Microchip provides the MCP1661 Stem-Up Converter Evaluation Board (ADM00518) to validate performance and efficiency across different load conditions.

Categories

Power Management > Switching Regulators