component
TMF0321
Public Made by Adomby adom
TM Shenzhen Titan Micro Elec AC-DC Controllers And Regulators, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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TMF0321
TM Shenzhen Titan Micro Elec · AC-DC Controllers And Regulators · DIP-8
TMF0321 from TM Shenzhen Titan Micro Elec, in a DIP-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 | VDD-G | power_in | Internal driver supply input, connected to VDD through a resistor (page 2 pin table; no voltage limit is given for this pin). |
| 2 | VDD | power_in | Supply input; recommended operating range is 10 to 23 V with an absolute maximum of 30 V, the IC starts above 15.5 V and VDD must not fall below 9.5 V during start-up, and overvoltage protection trips above 24 V. |
| 3 | FB | input | Voltage feedback input connected to an external optocoupler; recommended range is 0 to 5 V with an absolute range of -0.3 to 6.0 V. |
| 4 | CS | input | Current sense input connected to the power MOSFET source through an external sense resistor; input range is -0.3 to 5.0 V and the peak current limit threshold is 1.0 to 1.1 V. |
| 5 | DRAIN | passive | Power MOSFET drain; the internal MOSFET has a drain-source breakdown voltage of 650 V minimum. |
| 6 | DRAIN | passive | Power MOSFET drain (same node as pin 5); the internal MOSFET has a drain-source breakdown voltage of 650 V minimum. |
| 7 | GND | power_in | Ground pin for the IC and system reference. |
| 8 | GND | power_in | Ground pin for the IC and system reference. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TM Shenzhen Titan Micro Elec |
| Package | DIP-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| 启动电压 (VDD turn-on) | VDD-ON | 14.5 | 15.5 | 16.5 | V | 4 | |
| 关闭电压 (VDD turn-off) | VDD-OFF | 8.5 | 9.5 | 10.5 | V | 4 | |
| 启动电流 | IDD-ST | 5 | 20 | uA | VDD=VDD-ON-0.5V | 4 | |
| 正常工作电流 | IDD-OP | 2.5 | 4 | mA | 4 | ||
| VDD 过压保护 | VDD-OVP | 23 | 24 | V | 4 | ||
| VDD 钳位电压 | VDD-CLAMP | 25 | 27 | V | IDD=5mA | 4 | |
| FB 开路电压 | VFB-OPEN | 4.2 | 4.7 | 5.2 | V | 4 | |
| 电流限流值（峰值） | VCSTH-H | 1 | 1.1 | V | 4 | ||
| 电流限制值（谷值） | VCSTH-L | 0.7 | 0.8 | V | 4 | ||
| 振荡频率 | fOSC | 63 | 67 | 71 | KHz | 5 | |
| 抖频范围 | f△SHUFFLING | -6 | 6 | % | 5 | ||
| 频偏 VS VDD电压 | fDV | 0.2 | 1 | % | VDD=10V to 23V | 5 | |
| 最大占空比 | DMAX | 75 | 80 | 85 | % | 5 | |
| 漏源击穿电压 | BVDSS | 650 | V | VGS=0V, ID=250uA | 5 | ||
| 漏源漏电流 | IDSS | 100 | uA | VGS=0V, VDS=650V | 5 | ||
| 导通电阻 (TMF0321) | RDS-ON | 12 | 15 | Ω | ID=0.35A，VGS=10V | 5 | |
| VDD 供电电压 推荐值 | VDD | 10 | 23 | V | 3 | ||
| VDD 供电电压 极限值 | VDD | 30 | V | 3 | |||
| FB 引脚输入电压 推荐值 | VFB | 0 | 5 | V | 3 | ||
| FB 引脚输入电压 极限值 | VFB | -0.3 | 6 | V | 3 | ||
| CS 引脚输入电压 | VCS | -0.3 | 5 | V | 3 | ||
| 工作结点温度 | TJ | -40 | 150 | °C | 3 | ||
| 存储温度范围 | TSTG | -40 | 150 | °C | 3 | ||
| 工作环境温度 | TA | -40 | 85 | °C | 3 | ||
| 焊接温度 | TL | 260 | °C | 10 秒 | 3 | ||
| ESD 人体模式 | ESD | 2 | KV | Human body model, JESD22-A114 | 3 | ||
| ESD 机器模式 | ESD | 0.2 | KV | Machine model, JESD22-A115 | 3 | ||
| 热阻(结点到外壳) | θJC | 82.5 | °C/W | 3 | |||
| 前沿尖峰消隐时间 | TLEB | 350 | ns | 4 | |||
| 过流保护延时时间 | TPD | 60 | ns | 4 | |||
| 过载延时时间 | TPD | 50 | ms | 4 | |||
| 过温保护温度 | TOTP | 130 | °C | 5 | |||
| 过温保护回滞温度 | TOTP_SH | 105 | °C | 5 | |||
| 软启动时间 | T_SS | 2.5 | ms | 4 | |||
| 进入跳周期模式 FB 电压 | VFB-BM | 1.4 | V | 4 | |||
| FB 过载电压阀值 | VFB-PL | 3.7 | V | 4 | |||
| VDD 跳周期模式电压 | VDD-BM | 10.6 | V | 4 | |||
| PWM 比较器增益 | AV | 1.7 | V/V | 4 | |||
| FB 引脚输入阻抗 | ZFB | 6 | KΩ | 4 | |||
| CS 引脚输入阻抗 | ZCS | 5 | KΩ | 4 | |||
| 跳周期振荡频率 | fOSC-BM | 20 | KHz | 5 |
CAD (KiCad official)
- Symbol:
TMF0321 - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files:
tmf0321-etched.step/tmf0321-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tmf0321.step/tmf0321.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TM Shenzhen Titan Micro Elec datasheet (11 pp, sha256
dc61c811b036bbf2, 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).
# TMF0321
**TM Shenzhen Titan Micro Elec** · AC-DC Controllers And Regulators · DIP-8
TMF0321 from TM Shenzhen Titan Micro Elec, in a DIP-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 | VDD-G | power_in | Internal driver supply input, connected to VDD through a resistor (page 2 pin table; no voltage limit is given for this pin). |
| 2 | VDD | power_in | Supply input; recommended operating range is 10 to 23 V with an absolute maximum of 30 V, the IC starts above 15.5 V and VDD must not fall below 9.5 V during start-up, and overvoltage protection trips above 24 V. |
| 3 | FB | input | Voltage feedback input connected to an external optocoupler; recommended range is 0 to 5 V with an absolute range of -0.3 to 6.0 V. |
| 4 | CS | input | Current sense input connected to the power MOSFET source through an external sense resistor; input range is -0.3 to 5.0 V and the peak current limit threshold is 1.0 to 1.1 V. |
| 5 | DRAIN | passive | Power MOSFET drain; the internal MOSFET has a drain-source breakdown voltage of 650 V minimum. |
| 6 | DRAIN | passive | Power MOSFET drain (same node as pin 5); the internal MOSFET has a drain-source breakdown voltage of 650 V minimum. |
| 7 | GND | power_in | Ground pin for the IC and system reference. |
| 8 | GND | power_in | Ground pin for the IC and system reference. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TM Shenzhen Titan Micro Elec |
| Package | DIP-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| 启动电压 (VDD turn-on) | VDD-ON | 14.5 | 15.5 | 16.5 | V | | 4 |
| 关闭电压 (VDD turn-off) | VDD-OFF | 8.5 | 9.5 | 10.5 | V | | 4 |
| 启动电流 | IDD-ST | | 5 | 20 | uA | VDD=VDD-ON-0.5V | 4 |
| 正常工作电流 | IDD-OP | 2.5 | | 4 | mA | | 4 |
| VDD 过压保护 | VDD-OVP | 23 | | 24 | V | | 4 |
| VDD 钳位电压 | VDD-CLAMP | 25 | | 27 | V | IDD=5mA | 4 |
| FB 开路电压 | VFB-OPEN | 4.2 | 4.7 | 5.2 | V | | 4 |
| 电流限流值（峰值） | VCSTH-H | 1 | | 1.1 | V | | 4 |
| 电流限制值（谷值） | VCSTH-L | 0.7 | | 0.8 | V | | 4 |
| 振荡频率 | fOSC | 63 | 67 | 71 | KHz | | 5 |
| 抖频范围 | f△SHUFFLING | -6 | | 6 | % | | 5 |
| 频偏 VS VDD电压 | fDV | 0.2 | | 1 | % | VDD=10V to 23V | 5 |
| 最大占空比 | DMAX | 75 | 80 | 85 | % | | 5 |
| 漏源击穿电压 | BVDSS | 650 | | | V | VGS=0V, ID=250uA | 5 |
| 漏源漏电流 | IDSS | | | 100 | uA | VGS=0V, VDS=650V | 5 |
| 导通电阻 (TMF0321) | RDS-ON | | 12 | 15 | Ω | ID=0.35A，VGS=10V | 5 |
| VDD 供电电压 推荐值 | VDD | 10 | | 23 | V | | 3 |
| VDD 供电电压 极限值 | VDD | | | 30 | V | | 3 |
| FB 引脚输入电压 推荐值 | VFB | 0 | | 5 | V | | 3 |
| FB 引脚输入电压 极限值 | VFB | -0.3 | | 6 | V | | 3 |
| CS 引脚输入电压 | VCS | -0.3 | | 5 | V | | 3 |
| 工作结点温度 | TJ | -40 | | 150 | °C | | 3 |
| 存储温度范围 | TSTG | -40 | | 150 | °C | | 3 |
| 工作环境温度 | TA | -40 | | 85 | °C | | 3 |
| 焊接温度 | TL | | | 260 | °C | 10 秒 | 3 |
| ESD 人体模式 | ESD | | | 2 | KV | Human body model, JESD22-A114 | 3 |
| ESD 机器模式 | ESD | | | 0.2 | KV | Machine model, JESD22-A115 | 3 |
| 热阻(结点到外壳) | θJC | | 82.5 | | °C/W | | 3 |
| 前沿尖峰消隐时间 | TLEB | | 350 | | ns | | 4 |
| 过流保护延时时间 | TPD | | 60 | | ns | | 4 |
| 过载延时时间 | TPD | | 50 | | ms | | 4 |
| 过温保护温度 | TOTP | | 130 | | °C | | 5 |
| 过温保护回滞温度 | TOTP_SH | | 105 | | °C | | 5 |
| 软启动时间 | T_SS | | 2.5 | | ms | | 4 |
| 进入跳周期模式 FB 电压 | VFB-BM | | 1.4 | | V | | 4 |
| FB 过载电压阀值 | VFB-PL | | 3.7 | | V | | 4 |
| VDD 跳周期模式电压 | VDD-BM | | 10.6 | | V | | 4 |
| PWM 比较器增益 | AV | | 1.7 | | V/V | | 4 |
| FB 引脚输入阻抗 | ZFB | | 6 | | KΩ | | 4 |
| CS 引脚输入阻抗 | ZCS | | 5 | | KΩ | | 4 |
| 跳周期振荡频率 | fOSC-BM | | 20 | | KHz | | 5 |
## CAD (KiCad official)
- Symbol: `TMF0321`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files: `tmf0321-etched.step` / `tmf0321-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmf0321.step` / `tmf0321.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [TM Shenzhen Titan Micro Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590442791525650432) (11 pp, sha256 `dc61c811b036bbf2`, 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`, 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](docs/tmf0321-datasheet.pdf)