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TMI8261
Public Made by Adomby adom
TMI Motor Driver ICs, SOP-8. 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
markdownTMI8261
TMI · Motor Driver ICs · SOP-8
TMI8261 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 | IN2 | input | Reverse-rotation logic input (high 1.5V-6V, low ≤1.2V, max frequency 50kHz). |
| 2 | IN1 | input | Forward-rotation logic input (high 1.5V-6V, low ≤1.2V, max frequency 50kHz). |
| 3 | GND | power_in | Ground reference. |
| 4 | VCC | power_in | Power supply input for the H-bridge, operating range 3V to 18V (abs max 25V), with bypass capacitors placed close to the pin. |
| 5 | OUT1 | output | H-bridge forward-rotation output, pins 5 and 6 are shorted together and carry up to 5.0A continuous. |
| 6 | OUT1 | output | H-bridge forward-rotation output, pins 5 and 6 are shorted together and carry up to 5.0A continuous. |
| 7 | OUT2 | output | H-bridge reverse-rotation output, pins 7 and 8 are shorted together and carry up to 5.0A continuous. |
| 8 | OUT2 | output | H-bridge reverse-rotation output, pins 7 and 8 are shorted together and carry up to 5.0A continuous. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TMI |
| Package | SOP-8 |
| Category | Power Supply Chip |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | 25 | V | 2 | ||
| Output continuous current | IOUT | 0 | 5 | A | 2 | ||
| Input voltage IN1, IN2 | VIN_X | -0.3 | V | max printed as VCC | 2 | ||
| Operating ambient temperature | TOP | -25 | 85 | °C | 2 | ||
| Junction temperature (printed symbol Tstg) | Tstg | -40 | 150 | °C | 2 | ||
| Storage temperature (printed symbol TJ) | TJ | -55 | 150 | °C | 2 | ||
| Power dissipation | PD | 2 | W | 2 | |||
| Lead soldering temperature | 260 | °C | soldering 10s | 2 | |||
| ESD human body model | VESD | -2000 | 2000 | V | JEDEC JS-001 | 3 | |
| Operating voltage range | VCC | 3 | 18 | V | 3 | ||
| Input signal voltage IN1, IN2 | VIN_X | -0.3 | 6 | V | 3 | ||
| Continuous output current | IOUT_X | 0 | 5 | A | 3 | ||
| Logic input frequency | FIN_X | 0 | 50 | kHz | 3 | ||
| Operating voltage | VVCC | 3 | 18 | V | TA = 25°C | 4 | |
| Standby current | ISDT | 1 | μA | VCC=12V, IN1=IN2=0V, no load | 4 | ||
| Quiescent (brake) current | IBRAKE | 0.3 | 0.6 | 1 | mA | VCC=12V, IN1=IN2=5V or IN1=5V & IN2=0V or IN1=0V & IN2=5V, no load | 4 |
| PWM current | IPWM | 1 | 1.5 | 3 | mA | VCC=12V, IN1=5V, IN2=50kHz, no load | 4 |
| Undervoltage lockout | UVLO | 1.9 | 2.2 | 2.8 | V | VCC rising | 4 |
| Input high level | VINH | 1.5 | 6 | V | 4 | ||
| Input low level | VINL | 1.2 | V | 4 | |||
| Input high current | IINH | 50 | 100 | μA | VCC = 12V, VIN = 5V | 4 | |
| Input low current | IINL | 1 | μA | VCC = 12V, VIN= 0V | 4 | ||
| On-resistance HS+LS | Rds(on) | 63 | mΩ | ILOAD=1A, HS+LS | 4 | ||
| On-resistance HS+LS | Rds(on) | 65 | mΩ | ILOAD=3A, HS+LS | 4 | ||
| Thermal shutdown temperature | TSD | 170 | °C | design guaranteed | 4 | ||
| Thermal shutdown hysteresis | THYS | 40 | °C | design guaranteed | 4 | ||
| Overcurrent protection current | IOCP | 12 | A | 4 | |||
| Overcurrent deglitch time | tOCP | 2.5 | μs | 4 | |||
| Overcurrent retry time | tRETRY | 2.4 | ms | 4 |
CAD (KiCad official)
- Symbol:
TMI8261 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
tmi8261-etched.step/tmi8261-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tmi8261.step/tmi8261.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TMI datasheet (10 pp, sha256
58e215bc9243012b, retrieved 2026-10-22, 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-sonnet-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).