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MCP1401 Datasheet(PDF) 9 Page - Microchip Technology |
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MCP1401 Datasheet(HTML) 9 Page - Microchip Technology |
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9 / 20 page  © 2007 Microchip Technology Inc. DS22052A-page 9 MCP1401/02 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE (1) 3.1 Supply Input (VDD) VDD is the bias supply input for the MOSFET driver and has a voltage range of 4.5V to 18V. This input must be decoupled to ground with a local capacitor. This bypass capacitor provides a localized low-impedance path for the peak currents that are to be provided to the load. 3.2 Control Input (IN) The MOSFET driver input is a high-impedance, TTL/ CMOS-compatible input. The input also has hysteresis between the high and low input levels, allowing them to be driven from slow rising and falling signals, and to provide noise immunity. 3.3 Ground (GND) Ground is the device return pin. The ground pin should have a low impedance connection to the bias supply source return. High peak currents will flow out the ground pin when the capacitive load is being discharged. 3.4 Output (OUT) The output is a CMOS push-pull output that is capable of sourcing and sinking 0.5A of peak current (VDD = 18V). The low output impedance ensures the gate of the external MOSFET will stay in the intended state even during large transients. This output also has a reverse current latch-up rating of 0.5A. SOT-23-5 Symbol Description 1 GND Ground 2VDD Supply Input 3 IN Control Input 4 GND Ground 5 OUT Output Note 1: Duplicate pins must be connected for proper operation. |
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