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General Description

The MCP1631/MCP1631V is a high-speed analog pulse width modulator (PWM) used to develop intelligent power systems. When combined with a microcontroller, the MCP1631/MCP1631V will control the power system duty cycle providing output voltage or current regulation. The microcontroller can be used to adjust output voltage or current, switching frequency and maximum duty cycle while providing additional features making the power system more intelligent, robust and adaptable.

Features

? Programmable Switching Battery Charger

Designs

? High-Speed Analog PWM Controller

(2 MHz Operation)

? Combine with Microcontroller for “Intelligent”

Power System Development

? Peak Current Mode Control (MCP1631)

? Voltage Mode Control (MCP1631V)

? High Voltage Options Operate to +16V Input:

- MCP1631HV Current Mode

- MCP1631VHV Voltage Mode

? Regulated Output Voltage Options:

- +5.0V or +3.3V

- 250 mA maximum current

? External Oscillator Input sets Switching

Frequency and Maximum Duty Cycle Limit

? External Reference Input Sets Regulation Voltage

or Current

? Error Amplifier, Battery Current ISNSAmplifier,

Battery Voltage VSNSAmplifier Integrated

? Integrated Overvoltage Comparator

? Integrated High Current Low Side MOSFET

Driver (1A Peak)

? Shutdown mode reduces IQ to 2.4 μA (typical)

? Internal Overtemperature Protection

? Undervoltage Lockout (UVLO)

? Package Options:

- 4 mm x 4 mm 20-Lead QFN

(MCP1631/MCP1631V only)

- 20-Lead TSSOP (All Devices)

- 20-Lead SSOP (All Devices)