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LM4863LQ

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Texas Instruments Audio Amplifiers, WQFN-24-EP(4x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

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LM4863LQ

Texas Instruments · Audio Amplifiers · WQFN-24-EP(4x5)

LM4863LQ from Texas Instruments, in a WQFN-24-EP(4x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 NC unconnected No connect pin.
2 +OUT A output Non-inverting bridge output of channel A, connected with -OUT A across the load in bridge mode.
3 VDD power_in Positive supply pin, 2.0V to 5.5V operating range, to be bypassed with a local 1.0µF tantalum capacitor to ground.
4 -OUT A output Inverting bridge output of channel A (Amp1A output), biased at half-supply.
5 -IN A input Inverting input of channel A, where Ri and Rf set the closed-loop gain.
6 GND power_in Ground pin.
7 +IN A input Non-inverting input of channel A.
8 GND power_in Ground pin.
9 GND power_in Ground pin.
10 GND power_in Ground pin.
11 GND power_in Ground pin.
12 GND power_in Ground pin.
13 +IN B input Non-inverting input of channel B.
14 BYPASS passive Half-supply bias node filtered by capacitor CB to ground (1.0µF suggested), which sets turn-on time and PSRR.
15 -IN B input Inverting input of channel B, where Ri and Rf set the closed-loop gain.
16 -OUT B output Inverting bridge output of channel B (Amp1B output), biased at half-supply.
17 VDD power_in Positive supply pin, 2.0V to 5.5V operating range, to be bypassed with a local 1.0µF tantalum capacitor to ground.
18 +OUT B output Non-inverting bridge output of channel B, connected with -OUT B across the load in bridge mode.
19 GND power_in Ground pin.
20 HP-IN input Headphone control input; a voltage between 4V and VDD turns off Amp2A and Amp2B for single-ended headphone mode, while 0.8V or below keeps bridged mode.
21 GND power_in Ground pin.
22 GND power_in Ground pin.
23 SHUTDOWN input Micro-power shutdown control; applying VDD activates shutdown (0.7µA typ), logic threshold typically VDD/2.
24 GND power_in Ground pin.
25 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package WQFN-24-EP(4x5)
Category Amplifiers/Comparators
Pins 25

CAD (KiCad official)

  • Symbol: LM4863LQ
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x5mm_P0.5mm_EP2.65x3.65mm
  • 3D model: WQFN-24-EP(4x5) (KiCad packages3D, STEP)
  • 3D model files: lm4863lq-etched.step / lm4863lq-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4863lq.step / lm4863lq.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (28 pp, sha256 8fa0bacebe7d5e84, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF