MCP1633

MCP1633 Low-Side PWM Controller with LED Dimming Capability Features High Speed Current Mode Pulse-Width Modulator (PWM) Controller Easy to Interface with PIC® Microcontroller for Implementing High-Performance LED Drivers Integrated General Purpose Operational Amplifier that can be Used for Current Sensing Internal Oscillator with Adjustable Frequency via External Resistor External Synchronization Option for the Oscillator Internal Slope Compensation Circuit Current Sense to VEXT Response <120 ns Typical Internal Leading Edge Blanking Circuit for Current Sense Input Programmable Current Sense Offset Internal Reference Voltage Generator Soft Start Capability Internal Push-Pull MOSFET Driver with 1A Peak Current Capability Internal MOSFET Driver for Dimming/Load Disconnect Input Voltage Range: 3V to 5.5V Undervoltage Lockout Circuit Output Overvoltage Protection Output Short Circuit Protection Overtemperature Protection Small 16-Pin QFN 3 x 3 mm Package Applications LED Drivers Switch Mode Power Supplies Brick DC-DC Converters General Description The MCP1633 High Speed PWM Controller is a pulsewidth modulator developed for standalone power supply applications. The MCP1633 design is based on the MCP1632 PWM Controller but includes specific blocks for PWM LED dimming. It is suitable for use in topologies requiring a low side MOSFET, such as Boost, Flyback, SEPIC, CUK, etc. The MCP1633 uses Current Mode Control to provide superior band...