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TM1646-QSOP24
Public Made by Adomby adom
TM(Shenzhen Titan Micro Elec) LED Drivers, QSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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PCB Footprint
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Datasheet
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README
markdownTM1646-QSOP24
TM(Shenzhen Titan Micro Elec) · LED Drivers · QSOP-24
TM1646-QSOP24 from TM(Shenzhen Titan Micro Elec), in a QSOP-24. 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 | DA5 | output | Group A drive output pin with P-channel and N-channel open-drain outputs. |
| 2 | DA4 | output | Group A drive output pin with P-channel and N-channel open-drain outputs. |
| 3 | DA3 | output | Group A drive output pin with P-channel and N-channel open-drain outputs. |
| 4 | DA2 | output | Group A drive output pin with P-channel and N-channel open-drain outputs. |
| 5 | DA1 | output | Group A drive output pin with P-channel and N-channel open-drain outputs. |
| 6 | DA0 | output | Group A drive output pin with P-channel and N-channel open-drain outputs. |
| 7 | VDD | power_in | Logic power supply positive connection, recommended 3.0 V to 5.5 V. |
| 8 | DIN | input | Serial data input, data changes while SCLK is low and is transferred while SCLK is high. |
| 9 | SCLK | input | Clock input, data is clocked in on the rising edge. |
| 10 | NC | unconnected | No connection; not listed in the pin description table and labelled NC in the pin diagram. |
| 11 | GND | power_in | Logic ground, connect to system ground. |
| 12 | VDD | power_in | Logic power supply positive connection, recommended 3.0 V to 5.5 V. |
| 13 | DB8 | output | Group B drive output pin with P-channel and N-channel open-drain outputs. |
| 14 | DB7 | output | Group B drive output pin with P-channel and N-channel open-drain outputs. |
| 15 | DB6 | output | Group B drive output pin with P-channel and N-channel open-drain outputs. |
| 16 | DB5 | output | Group B drive output pin with P-channel and N-channel open-drain outputs. |
| 17 | DB4 | output | Group B drive output pin with P-channel and N-channel open-drain outputs. |
| 18 | DB3 | output | Group B drive output pin with P-channel and N-channel open-drain outputs. |
| 19 | DB2 | output | Group B drive output pin with P-channel and N-channel open-drain outputs. |
| 20 | DB1 | output | Group B drive output pin with P-channel and N-channel open-drain outputs. |
| 21 | DB0 | output | Group B drive output pin with P-channel and N-channel open-drain outputs. |
| 22 | DA8 | output | Group A drive output pin with P-channel and N-channel open-drain outputs; stays as N-channel open-drain output when display is off. |
| 23 | DA7 | output | Group A drive output pin with P-channel and N-channel open-drain outputs. |
| 24 | DA6 | output | Group A drive output pin with P-channel and N-channel open-drain outputs. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TM(Shenzhen Titan Micro Elec) |
| Package | QSOP-24 |
| Category | LED Drivers |
| Pins | 24 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Logic supply voltage (abs max) | VDD | -0.5 | 7 | V | Ta=25C, GND=0V | 2 | |
| Logic input voltage (abs max) | VI1 | -0.5 | 5.5 | V | -0.5 to VDD+0.5 V; Ta=25C, VDD=5.0V | 2 | |
| DA0 |
IOP | -55 | mA | Ta=25C, VDD=5.0V | 2 | ||
| DA0 |
ION | 200 | mA | Ta=25C, VDD=5.0V | 2 | ||
| Power dissipation | PD | 400 | mW | Ta=25C, VDD=5.0V | 2 | ||
| Operating temperature | Topt | -40 | 85 | °C | 2 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 2 | ||
| Logic supply voltage | VDD | 3 | 5.5 | V | Ta=-40~+85C; typ 5/3.3 | 3 | |
| High-level input voltage | VIH | 0.7 | V | Ta=-40~+85C; min 0.7 VDD, max VDD | 3 | ||
| Low-level input voltage | VIL | 0 | 0.3 | V | Ta=-40~+85C; max 0.3 VDD | 3 | |
| Output source current 1 | Ioh1 | -5.2 | -6.5 | -10.4 | mA | VDD=3.3V, Vo=3V | 3 |
| Output source current 2 | Ioh2 | -13 | -20 | -33 | mA | VDD=3.3V, Vo=2V | 3 |
| Output sink current | IOL | 46 | 80 | 114 | mA | VDD=3.3V, Vo=0.3V | 3 |
| Input current | II | -1 | 1 | μA | VI = VDD / VSS; VDD=3.0~3.6V | 3 | |
| High-level input voltage SCLK, DIN | VIH | 0.7 | V | VDD=3.0~3.6V; min 0.7 VDD | 3 | ||
| Low-level input voltage SCLK, DIN | VIL | 0.3 | V | VDD=3.0~3.6V; max 0.3 VDD | 3 | ||
| Hysteresis voltage SCLK, DIN | VH | 0.2 | V | VDD=3.0~3.6V | 3 | ||
| Dynamic supply current | IDDdyn | 1 | mA | No load, display off; VDD=3.0~3.6V | 3 | ||
| Output source current 1 | Ioh1 | -22 | -27.5 | -44 | mA | VDD=5V, Vo=3V | 4 |
| Output source current 2 | Ioh2 | -22 | -33 | -55 | mA | VDD=5V, Vo=2V | 4 |
| Output sink current | IOL | 80 | 140 | mA | VDD=5V, Vo=0.3V | 4 | |
| Input current | II | -1 | 1 | μA | VI = VDD / VSS; VDD=4.5~5.5V | 4 | |
| High-level input voltage SCLK, DIN | VIH | 0.7 | V | VDD=4.5~5.5V; min 0.7 VDD | 4 | ||
| Low-level input voltage SCLK, DIN | VIL | 0.3 | V | VDD=4.5~5.5V; max 0.3 VDD | 4 | ||
| Hysteresis voltage SCLK, DIN | VH | 0.6 | V | VDD=4.5~5.5V | 4 | ||
| Dynamic supply current | IDDdyn | 1 | mA | No load, display off; VDD=4.5~5.5V | 4 | ||
| Oscillation frequency | fosc | 300 | KHz | VDD=3.3V | 4 | ||
| Propagation delay time tplz | tplz | 300 | ns | CLK → DIN; CL=15pF, RL=10K | 4 | ||
| Propagation delay time tpzl | tpzl | 100 | ns | CL=15pF, RL=10K | 4 | ||
| Rise time | tTZH | 2 | μs | CL=300pF, A0/B0~A8/B8 | 4 | ||
| Fall time | tTHZ | 120 | μs | CL=300pF, An, Bn | 4 | ||
| Maximum clock frequency | Fmax | 1 | MHz | Duty cycle 50% | 4 | ||
| Input capacitance | CI | 15 | pF | 4 | |||
| Clock pulse width | PWCLK | 400 | ns | VDD=3.0~5.5V | 5 | ||
| Strobe pulse width | PWSTB | 1 | μs | VDD=3.0~5.5V | 5 | ||
| Data setup time | tSetup | 100 | ns | VDD=3.0~5.5V | 5 | ||
| Data hold time | tHOLD | 100 | ns | VDD=3.0~5.5V | 5 | ||
| Wait time | tWAIT | 1 | μs | CLK↑→CLK↓ | 5 |
CAD (KiCad official)
- Symbol:
TM1646-QSOP24 - Footprint:
Package_SO:QSOP-24_3.9x8.7mm_P0.635mm - 3D model: QSOP-24 (KiCad packages3D, STEP)
- 3D model files:
tm1646-qsop24-etched.step/tm1646-qsop24-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tm1646-qsop24.step/tm1646-qsop24.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TM(Shenzhen Titan Micro Elec) datasheet (14 pp, sha256
0c53ca61244b4a8e, retrieved 2026-10-23, 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 0.3, 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).