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LM26480QSQX-8D

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Texas Instruments Linear Voltage Regulators (LDO), WQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM26480QSQX-8D

Texas Instruments · Linear Voltage Regulators (LDO) · WQFN-24-EP(4x4)

LM26480QSQX-8D from Texas Instruments, in a WQFN-24-EP(4x4). 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 VINLDO12 power_in Analog power input for internal functions (VREF, BIAS, I2C, logic), which is always powered per the power block operation table.
2 SYNC input Frequency synchronization input that allows an external clock to synchronize the internal oscillator; it defaults to off and must be grounded when not used.
3 NPOR output Open-drain power-on reset output for Buck1 and Buck2 that is pulled to ground when either supply is not good and needs an external 100 kΩ pullup.
4 GND_SW1 power_in Buck1 NMOS power ground.
5 SW1 output Buck1 switcher output pin.
6 VIN1 power_in Power input from a DC source or battery to Buck1, which can be at 0 V when Buck1 is disabled.
7 ENSW1 input Enable pin for Buck1; a logic HIGH enables Buck1 and the pin cannot be left floating.
8 FB1 input Buck1 input feedback terminal.
9 GND_C power_in Non-switching core ground pin.
10 AVDD power_in Analog power for the buck converters, which is always powered per the power block operation table.
11 FB2 input Buck2 input feedback terminal.
12 ENSW2 input Enable pin for Buck2; a logic HIGH enables Buck2 and the pin cannot be left floating.
13 VIN2 power_in Power input from a DC source or battery to Buck2, which can be at 0 V when Buck2 is disabled.
14 SW2 output Buck2 switcher output pin.
15 GND_SW2 power_in Buck2 NMOS power ground.
16 ENLDO2 input LDO2 enable pin; a logic HIGH enables LDO2 and the pin cannot be left floating.
17 ENLDO1 input LDO1 enable pin; a logic HIGH enables LDO1 and the pin cannot be left floating.
18 GND_L power_in LDO ground.
19 VINLDO1 power_in Power input from a DC source or battery to LDO1; minimum VIN is 1.74 V when LDO1 is enabled.
20 LDO1 power_out LDO1 output.
21 FBL1 input LDO1 feedback terminal.
22 FBL2 input LDO2 feedback terminal.
23 LDO2 power_out LDO2 output.
24 VINLDO2 power_in Power input from a DC source or battery to LDO2; minimum VIN is 1.74 V when LDO2 is enabled.
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(4x4)
Category Power Supply Chip
Pins 25

CAD (KiCad official)

  • Symbol: LM26480QSQX-8D
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm
  • 3D model: WQFN-24-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: lm26480qsqx-8d-etched.step / lm26480qsqx-8d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm26480qsqx-8d.step / lm26480qsqx-8d.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (42 pp, sha256 54ee9b099cf1e688, retrieved 2026-10-11, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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