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The MCP1631-E/SS is a high-speed analog Pulse Width Modulator (PWM) controller from Microchip Technology, designed for intelligent power system applications. It operates in peak current mode and is suitable for various DC-DC converter topologies, including Boost, SEPIC, Flyback, and Cuk converters.

Key Features

• PWM Controller: High-speed analog PWM controller with peak current mode control.

• Switching Frequency: Operates up to 2 MHz, allowing for compact power supply designs.

• Voltage Range: Input voltage range from 3 V to 5.5 V.

• Output Current: Capable of delivering up to 250 mA.

• Integrated Functions:

  • Error amplifier for voltage regulation.

  • Current sense amplifier for current regulation.

  • Overvoltage comparator for protection.

  • High-current low-side MOSFET driver (1 A peak).

• Shutdown Mode: Reduces quiescent current to 2.4 µA (typical).

• Protection Features: Includes undervoltage lockout (UVLO) and overtemperature protection.

• Package: 20-lead SSOP, suitable for surface-mount applications.

Applications

• Programmable switching battery chargers supporting multiple chemistries (Li-Ion, NiMH, NiCd, Pb-Acid).

• LED lighting applications.

• Constant current SEPIC power supply designs.

• USB input programmable switching battery chargers.

Additional Resources

• Product Page:

• Datasheet: MCP1631/HV/V/VHV Datasheet (PDF)

If you need assistance with compatible components or evaluation boards, feel free to ask!