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TC4425CPA Datasheet(PDF) 9 Page - Microchip Technology |
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TC4425CPA Datasheet(HTML) 9 Page - Microchip Technology |
9 / 20 page 2002-2012 Microchip Technology Inc. DS21421E-page 9 TC4423/TC4424/TC4425 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE (1) 3.1 Inputs A and B Inputs A and B are TTL/CMOS compatible inputs that control outputs A and B, respectively. These inputs have 300 mV of hysteresis between the high and low input levels, allowing them to be driven from slow rising and falling signals, and to provide noise immunity. 3.2 Outputs A and B Outputs A and B are CMOS push-pull outputs that are capable of sourcing and sinking 3A peaks of current (VDD = 18V). The low output impedance ensures the gate of the external MOSFET will stay in the intended state even during large transients. These outputs also have a reverse current latch-up rating of 1.5A. 3.3 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 ceramic capacitor. This bypass capacitor provides a localized low- impedance path for the peak currents that are to be provided to the load. 3.4 Ground (GND) Ground is the device return pin. The ground pin(s) should have a low-impedance connection to the bias supply source return. High peak currents will flow out the ground pin(s) when the capacitive load is being discharged. 3.5 Exposed Metal Pad The exposed metal pad of the 6x5 DFN package is not internally connected to any potential. Therefore, this pad can be connected to a ground plane or other cop- per plane on a printed circuit board to aid in heat removal from the package. 8-Pin PDIP 8-Pin DFN 16-Pin SOIC (Wide) Symbol Description 1 1 1 NC No connection 2 2 2 IN A Input A — — 3 NC No connection 3 3 4 GND Ground — — 5 GND Ground — — 6 NC No connection 4 4 7 IN B Input B — — 8 NC No connection — — 9 NC No connection 5 5 10 OUT B Output B —— 11 OUT B Output B 66 12 VDD Supply input —— 13 VDD Supply input 7 7 14 OUT A Output A — — 15 OUT A Output A 8 8 16 NC No connection — PAD — NC Exposed Metal Pad Note 1: Duplicate pins must be connected for proper operation. |
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