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LM26480QSQ-AA

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

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LM26480QSQ-AA

Texas Instruments · DC-DC Converters · WQFN-24-EP(4x4)

LM26480QSQ-AA 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), always powered.
2 SYNC input Frequency synchronization input that lets an external clock synchronize the internal oscillator; it defaults 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 those supplies are not good and requires 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.
7 ENSW1 input Enable input 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, always powered.
11 FB2 input Buck2 input feedback terminal.
12 ENSW2 input Enable input 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.
14 SW2 output Buck2 switcher output pin.
15 GND_SW2 power_in Buck2 NMOS power ground.
16 ENLDO2 input LDO2 enable input; a logic HIGH enables LDO2, and the pin cannot be left floating.
17 ENLDO1 input LDO1 enable input; a logic HIGH enables LDO1, and the pin cannot be left floating.
18 GND_L power_in LDO ground pin.
19 VINLDO1 power_in Power input from a DC source or battery to LDO1; if enabled, minimum VIN is 1.74 V.
20 LDO1 power_out LDO1 regulated output.
21 FBL1 input LDO1 feedback input terminal.
22 FBL2 input LDO2 feedback input terminal.
23 LDO2 power_out LDO2 regulated output.
24 VINLDO2 power_in Power input from a DC source or battery to LDO2; if enabled, minimum VIN is 1.74 V.
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 Management (PMIC)
Pins 25

CAD (KiCad official)

  • Symbol: LM26480QSQ-AA
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm
  • 3D model: WQFN-24-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: lm26480qsq-aa-etched.step / lm26480qsq-aa-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm26480qsq-aa.step / lm26480qsq-aa.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 2026-10-08, 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