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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MCP1633 датащи(PDF) 1 Page - Microchip Technology |
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MCP1633 датащи(HTML) 1 Page - Microchip Technology |
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1 / 31 page  2020 Microchip Technology Inc. DS20006289A-page 1 MCP1633 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 pulse- width 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 bandwidth and transient response, and also cycle-by-cycle current limiting with adjustable peak offset. The MCP1633 is also capable of operating in Voltage Mode Control if required. The switching frequency of the MCP1633 can be set by an external resistor between 200 kHz and 2.2 MHz. The MCP1633 reference voltage is adjustable by using only one external resistor. The MCP1633 integrates a current sense amplifier with programmable gain using external resistors. The MCP1633 can achieve high performance LED dimming by “freezing” the compensation network and load disconnect capability. The MCP1633 integrates a high speed comparator with a high performance error amplifier with a PWM latch to perform the high speed analog Power Supply PWM function. Integrated Undervoltage Lockout, Overvoltage protection and Overtemperature Protection make designs using the MCP1633 robust over a range of external conditions. Package Type FSW 1 CSO 2 SS/Ref 3 COMP 4 CS 9 10 VEXT 11 VCC 12 17 EP FAULT 3 x 3x 0.9mmQFN See Table 3-1 for pin information Low-Side PWM Controller with LED Dimming Capability |
Аналогичный номер детали - MCP1633 |
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Аналогичное описание - MCP1633 |
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