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LM26480QSQX-8D
Public Made by Adomby adom
Texas Instruments Linear Voltage Regulators (LDO), WQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM26480QSQX-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm26480qsqx-8d.step/lm26480qsqx-8d.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).