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High Speed Low Side PWM Controller W/Dimming
Overview
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- Current Limit / Short Circuit Protection:1
- Max Duty Cycle (%):0.99
- Enable Pin:1
- External Clock Sync:1
- Input UVLO Typ (V):2.8
- Internal Compensation:0
- Internal Voltage Bias:0
- Iq Off (µA):2.4
- Input Voltage Max:5.5
- Output Voltage Max:0
- Input Voltage Min:3
- Output Voltage Min:0
- Operating Supply Current (mA):3.5
- PFM, Discontinuous, Hyperlight load, or Skip Mode:0
- Package:16/3x3 QFN
- Power Good Signal:0
- Soft Start:0
- Supported Outputs:1
- Supported Topologies:Flyback, Boost, SEPIC, Cuk
- Typical Tolerance (%):±3
- Integrated Over Voltage Comparator
- Integrated Low Side MOSFET Driver
- Internal over temperature protection
- Undervoltage Lockout
- Thermal shut down with hysteresis
MCP1633 is a Fixed Frequency Peak Current Mode PWM Controller and can be used as a standalone LED driver.
Input
Voltage: 3.0V – 5.5V
Input
Quiescent Current: 3.5mA typical
Oscillator
Frequency: 200kHz – 2.2MHz
External
Sync. Frequency Range: 0.1MHz – 2.5MHz
Internal
Driver RDSON P-Channel: 5Ω max.
Internal
Driver RDSON N-Channel: 5Ω max.
PWM
DIMM Driver RDSON P-Channel: 100Ω max.
PWM
DIMM Driver RDSON N-Channel: 100Ω max.
UVLO
Threshold: 3.0V max. with 100mV hysteresis
OVP
Default Threshold: 1.23V
Thermal
Shutdown Threshold: 1600C
with 200C hysteresis
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Tools And Software
Development Environment
Demo & Evaluation Boards
Library and Firmware
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 Online power solutions, accelerated
MPLAB Analog Designer (MAD) allows you to choose an existing solution or customize a suggested design. Schematics and component lists are included. View or modify your choice and, with one click, export the design files to MPLAB Mindi Analog Simulator for verification and analysis.
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| Tools |
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| The MCP1633 SEPIC LED Driver Demo Board is a step-up/step-down, switch-mode, DC/DC converter used for LED driver applications. The demo board provides a 200mA constant current source. Other output currents can be obtained with minor modifications to the board’s Bill of Materials (BOM). MCP1633 LED Driver Demo Board utilizes Microchip's MCP1633 high-speed Pulse-Width Modulator (PWM). The small 16-pin QFN MCP1633 device contains all the analog components necessary for a peak current mode control loop including specialized LED driver blocks. An 8-pin PIC12F1822 microcontroller is used to implement the dimming and protection functions.
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["developmentenvironment","Development Environment"] ,
["emulators","Emulator and Debuggers"] ,
["demoevaluationboards","Demo & Evaluation Boards"] ,
["programmerrelations","Programmers"] ,
["thirdpartytools","3rd Party Tools"] ,
["legacy","Legacy"] ,
["softwarelibraries","Library and Firmware"]
Design Resources
Reference Designs
Code Examples
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referencedesigns,Reference Designs:
codeexamples,Code Examples:
ibisboarddesignfiles,Board Design Files: