component

LP3906SQ-JXXI

Public Made by Adom

by adom

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

componentpower management (pmic)lp3906sq-jxxifactory-2.0.0extractor-text

Verified LP3906SQ-JXXI

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 2026RayPublished by the parts factory: tier mfr, 25 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: LP3906SQ-JXXI · WQFN-24-EP(4x5) · 25 pins
  • ✓copper: 25 copper pads, none touching another net
  • ✓datasheet: all 25 pin names found in the 47-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: QFN-24-1EP_4x5mm_P0.5mm_EP2.65x3.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-ncyiib1w/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 25 pins = 25 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 25 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ lp3906sq-jxxi.kicad_sym✓ lp3906sq-jxxi.kicad_mod✓ lp3906sq-jxxi.step
Spot something wrong? Report it as an issue Propose a fix Records are signed by members of adom.
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 1h ago
viewers lp3906sq-jxxi: viewers · Ray 1h ago
lp3906sq-jxxi-etched.glb Publish 0.1.0 · Ray 1h ago
lp3906sq-jxxi-etched.step lp3906sq-jxxi: factory component page (tier=mfr) · Ray 1h ago
lp3906sq-jxxi-hero.glb lp3906sq-jxxi: hero GLB from the etched model (keeps the MPN mark) · Ray 1h ago
lp3906sq-jxxi-hero.overlay.json Publish 0.1.0 · Ray 1h ago
lp3906sq-jxxi.glb Publish 0.1.0 · Ray 1h ago
lp3906sq-jxxi.kicad_mod Publish 0.1.0 · Ray 1h ago
lp3906sq-jxxi.kicad_sym Publish 0.1.0 · Ray 1h ago
lp3906sq-jxxi.lbr Publish 0.1.0 · Ray 1h ago
lp3906sq-jxxi.step Publish 0.1.0 · Ray 1h ago
package.json Publish 0.1.0 · Ray 1h ago
page.json Set visibility: public · Ray 1h ago
README.md Publish 0.1.0 · Ray 1h ago
verification.json Verified: Published by the parts factory: tier mfr, 25 pins · Ray 1h ago

LP3906SQ-JXXI

Texas Instruments · Battery Management · WQFN-24-EP(4x5)

LP3906SQ-JXXI 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 VIN2 power_in Power in from either DC source or Battery to Buck 2.
2 SW2 output Buck2 switcher output pin.
3 GND_SW2 power_in Buck2 NMOS Power Ground.
4 GND_C power_in Non switching core ground pin.
5 GND_SW1 power_in Buck1 NMOS Power Ground.
6 SW1 output Buck1 switcher output pin.
7 VIN1 power_in Power in from either DC source or Battery to buck 1.
8 SDA bidirectional I2C Data (Bidirectional).
9 SCL input I2C Clock.
10 EN_T input Enable for preset power on sequence.
11 FB1 input Buck1 input feedback terminal.
12 AVDD power_in Analog Power for Buck converters.
13 VINLDO1 power_in Power in from either DC source or Battery to input terminal of LDO1.
14 LDO1 power_out LDO1 Output.
15 ENLDO1 input LDO1 enable pin, a logic HIGH enables the LDO1.
16 ENLDO2 input LDO2 enable pin, a logic HIGH enables the LDO2.
17 GND_L power_in LDO Ground.
18 LDO2 power_out LDO2 Output.
19 VINLDO2 power_in Power in from either DC source or battery to input terminal to LDO2.
20 VinLDO12 power_in Analog Power for Internal Functions (VREF, BIAS, I2C, Logic).
21 FB2 input Buck2 input feedback terminal.
22 ENSW1 input Enable Pin for Buck1 switcher, a logic HIGH enables Buck1.
23 SYNC input Frequency Synchronization pin which allows the user to connect an external clock signal PLL to synchronize the PMIC internal oscillator.
24 ENSW2 input Enable Pin for Buck2 switcher, a logic HIGH enables Buck2.
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 Power Management (PMIC)
Pins 25

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input voltage (VIN, SDA, SCL) VIN, SDA, SCL -0.3 6 V 6
Power dissipation (PD_MAX) PD_MAX 1.43 W TA=85°C, TMAX=125°C 6
Junction temperature (TJ-MAX) TJ-MAX 150 °C 6
Storage temperature range -65 150 °C 6
Maximum lead temperature (soldering) 260 °C 6
ESD rating, Human Body Model 2 kV Human body model 6
Bucks input voltage range VIN 2.7 5.5 V Bucks 7
Junction temperature range TJ -40 125 °C 7
Ambient temperature range TA -40 85 °C 7
Junction-to-ambient thermal resistance θJA 28 °C/W NHZ0024B 7
LDO input operational voltage range VIN 1.74 5.5 V VINLDO1 and VINLDO2 PMOS pins 8
Output voltage accuracy (default VOUT) VOUT -3 3 % Load current = 1 mA 8
Line regulation ΔVOUT 0.15 %/V VIN = (VOUT + 0.3V) to 5.0V, Load Current = 1 mA 8
Dropout voltage VIN, VOUT 25 200 mV Load Current = 50 mA 8
ESR of output capacitor ESR 5 500 mΩ 8
Buck output voltage accuracy (default VOUT) VOUT -3 3 % Default VOUT 9
Input low level VIL 0.4 V 9
Input high level VIH 1.2 V 9

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing Abs Human Body Model (5) 2 kV (1) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under 6

CAD (KiCad official)

  • Symbol: LP3906SQ-JXXI
  • 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: lp3906sq-jxxi-etched.step / lp3906sq-jxxi-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3906sq-jxxi.step / lp3906sq-jxxi.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (47 pp, sha256 4315df9ad8029838, retrieved 2026-11-06, tier: manufacturer)
  • 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