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LM4651 Datasheet(PDF) 6 Page - Texas Instruments |
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LM4651 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 34 page OBSOLETE LM4651, LM4652 SNOS507H – MAY 2000 – REVISED APRIL 2013 www.ti.com Typical Application Figure 3. Typical Application Circuit and Test Circuit LM4651 PIN DESCRIPTIONS Pin No. Symbol Description 1 OUT1 The reference pin of the power MOSFET output to the gate drive circuitry. 2,27 BS1,BS2 The bootstrap pin provides extra bias to drive the upper gates, HG1,HG2. 3 HG1 High −Gate #1 is the gate drive to a top side MOSFET in the H-Bridge. 4 HG2 High −Gate #2 is the gate drive to a top side MOSFET in the H-Bridge. 5,15 GND The ground pin for all analog circuitry. The internally regulated positive voltage output for analog circuitry. This pin is available for internal 6 +6VBYP regulator bypassing only. 7 +VCC The positive supply input for the IC. The internally regulated negative voltage output for analog circuitry. This pin is available for internal 8 −6VBYP regulator bypassing only. 9 FBKVO The feedback instrumentation amplifier output pin. The error amplifier inverting input pin. The input audio signal and the feedback signal are summed at 10 ERRIN this input pin. 11 ERRVO The error amplifier output pin. 12 TSD The thermal shut down input pin for the thermal shut down output of the LM4652. 13 STBY Standby function input pin. This pin is CMOS compatible. The feedback instrumentation amplifier pin. This must be connected to the feedback filter from VO1 14 FBK1 (pin 15 on the LM4652 ). The switching frequency oscillation pin. Adjusting the resistor from 15.5k Ω to 0Ω changes the 16 OSC switching frequency from 75kHz to 225kHz. 17 Delay The dead time setting pin. 6 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LM4651 LM4652 |
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