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Contents

README

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TMI9290A

TMI · Battery Management ICs · SOP-8

TMI9290A from TMI, in a SOP-8. 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 GND power_in Ground pin; the datasheet gives no specific voltage or current limit for this pin.
2 FBO bidirectional Current sink/source feedback node: D+ steps sink 2 μA per step up to a 70 μA maximum at 12 V output, D- steps source 2 μA per step with a 14 μA minimum at 3.6 V output, and absolute maximum voltage is -0.3 to 6.5 V.
3 NC unconnected No connection.
4 NC unconnected No connection.
5 DM bidirectional USB D- data line with a 20 kΩ pull-down resistance (RDM) and absolute maximum voltage of -0.3 to 6.5 V.
6 DP bidirectional USB D+ data line with a 500 kΩ leakage resistance (RDP) and absolute maximum voltage of -0.3 to 6.5 V.
7 NC unconnected No connection.
8 VDD power_in Power supply input with a 3.2 V to 6.4 V operating range, absolute maximum -0.3 to 6.5 V, and an internal shunt clamp at 5.7 V typical; the datasheet recommends RVDD = 2.2 kΩ and CVDD = 470 nF.

Key specifications

Parameter Value
Manufacturer TMI
Package SOP-8
Category Power Management ICs
Pins 8

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
VDD Voltage Range -0.3 6.5 V 3
DP, DM, FBO, QC_EN voltage -0.3 6.5 V 3
Junction Temperature -40 150 °C 3
Storage Temperature Range -50 150 °C 3
Lead Temperature 260 °C 3
Power Dissipation 1 W 3
VDD Voltage Range (recommended) VDD 3.2 6.4 V 4
TJ Operating Junction Temperature Range TJ -40 125 °C 4
VDD Input Voltage Range VDD 3.2 6.4 V 5
VDD Shunt Voltage VDD (SHUNT) 5.3 5.7 6.1 V IVDD=3mA 5
Data Detect Voltage VDAT_REF 0.25 0.325 0.4 V 5
Output Voltage selection reference VSEL_REF 1.8 2 2.2 V 5
D+_1.2V/D-_1.2V line output voltage V1.2V 1.08 1.2 1.32 V 5
D+_2.7V/D-_2.7V line output voltage V2.7V 2.56 2.7 2.84 V 5
Unit Interval for FCP PHY communication UI 144 160 176 μs FCLK=125kHz 5

CAD (KiCad official)

  • Symbol: TMI9290A
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: tmi9290a-etched.step / tmi9290a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tmi9290a.step / tmi9290a.glb are the bare package body.

Provenance

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

  • Datasheet: TMI datasheet (9 pp, sha256 1bca049f682ff667, retrieved 2026-10-31, tier: lcsc)
  • 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