component
LM26480SQX-AA
Public Made by Adomby adom
Texas Instruments DC-DC Converters, 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
markdownLM26480SQX-AA
Texas Instruments · DC-DC Converters · WQFN-24-EP(4x4)
LM26480SQX-AA from Texas Instruments, in a WQFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VINLDO12 | power_in | Analog power supply for internal reference, bias, and logic circuits; requires 2.8V to 5.5V |
| 2 | SYNC | input | External oscillator synchronization input operating range 10.4 MHz to 15.6 MHz; must be grounded when not used |
| 3 | NPOR | tri_state | Open-drain power-on reset output for Buck1 and Buck2; pulled to ground when output voltages fall below specification with programmable delay of 60 ms default |
| 4 | GND_SW1 | power_in | Buck1 NMOS switching power ground |
| 5 | SW1 | power_out | Buck1 synchronous step-down converter output; programmable 0.8V to 2V with 1.5A maximum output current |
| 6 | VIN1 | power_in | Buck1 power input from DC source or battery; accepts 2.8V to 5.5V |
| 7 | ENSW1 | input | Buck1 enable input; logic HIGH enables converter operation; pin cannot be left floating |
| 8 | FB1 | input | Buck1 feedback input terminal for external resistor divider; nominal feedback voltage 0.5V ±3% |
| 9 | GND_C | power_in | Non-switching core ground for analog and control circuits |
| 10 | AVDD | power_in | Analog power supply for Buck converter control circuits; requires 2.8V to 5.5V |
| 11 | FB2 | input | Buck2 feedback input terminal for external resistor divider; nominal feedback voltage 0.5V ±3% |
| 12 | ENSW2 | input | Buck2 enable input; logic HIGH enables converter operation; pin cannot be left floating |
| 13 | VIN2 | power_in | Buck2 power input from DC source or battery; accepts 2.8V to 5.5V |
| 14 | SW2 | power_out | Buck2 synchronous step-down converter output; programmable 1V to 3.3V with 1.5A maximum output current |
| 15 | GND_SW2 | power_in | Buck2 NMOS switching power ground |
| 16 | ENLDO2 | input | LDO2 enable input; logic HIGH enables regulator operation; pin cannot be left floating |
| 17 | ENLDO1 | input | LDO1 enable input; logic HIGH enables regulator operation; pin cannot be left floating |
| 18 | GND_L | power_in | LDO linear regulator ground |
| 19 | VINLDO1 | power_in | LDO1 power input from DC source or battery; requires minimum 1.74V when enabled, maximum 5.5V |
| 20 | LDO1 | power_out | LDO1 regulated output; programmable 1V to 3.5V with 300mA maximum output current and 25mV typical dropout voltage |
| 21 | FBL1 | input | LDO1 feedback input terminal for external resistor divider; nominal feedback voltage 0.5V ±3% |
| 22 | FBL2 | input | LDO2 feedback input terminal for external resistor divider; nominal feedback voltage 0.5V ±3% |
| 23 | LDO2 | power_out | LDO2 regulated output; programmable 1V to 3.5V with 300mA maximum output current and 25mV typical dropout voltage |
| 24 | VINLDO2 | power_in | LDO2 power input from DC source or battery; requires minimum 1.74V when enabled, maximum 5.5V |
| 25 | DAP | power_in | Exposed thermal die attach pad for improved thermal dissipation; soldering to PCB recommended for thermal and mechanical performance |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WQFN-24-EP(4x4) |
| Category | Power Management (PMIC) |
| Pins | 25 |
CAD (KiCad official)
- Symbol:
LM26480SQX-AA - 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:
lm26480sqx-aa-etched.step/lm26480sqx-aa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm26480sqx-aa.step/lm26480sqx-aa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (44 pp, sha256
9fa8e8bf5131003e, retrieved 2026-09-23, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).