component
TMI4054
Public Made by Adomby adom
TMI Battery Management, SOT-23-5. 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
markdownTMI4054
TMI · Battery Management · SOT-23-5
TMI4054 from TMI, in a SOT-23-5. 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 | CHAG | output | Charge-status indicator pin that is pulled low while charging and goes high-impedance when charging terminates. |
| 2 | GND | power_in | IC ground pin. |
| 3 | BAT | power_out | Connects to the positive terminal of the single-cell Li-ion battery being charged. |
| 4 | VIN | power_in | IC power input pin; the datasheet's surge tests show the input tolerating up to 10V, but no absolute maximum rating is stated in the text. |
| 5 | PROG | passive | Charge-current programming pin; the charge current is set by the resistor connected from this pin, with R_PROG values of 1.5kΩ to 30kΩ tabulated. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TMI |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Programmable charge current (maximum) | 800 | mA | Feature bullet: up to 800mA programmable charge current (set by PROG resistor) | 3 | |||
| Battery standby current | 1 | µA | Feature bullet: <1µA battery quiescent current; no test conditions printed | 3 | |||
| Preset charge voltage accuracy | -1 | 1 | % | Feature bullet: accuracy of ±1% on the 4.2V preset charge voltage | 3 |
CAD (KiCad official)
- Symbol:
TMI4054 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
tmi4054-etched.step/tmi4054-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tmi4054.step/tmi4054.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TMI datasheet (15 pp, sha256
bf597d1791a044e9, retrieved 2026-10-18, 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).