TPS25921L
- 4.5 V – 18 V Operating Voltage, 20 V (Max)
- 90 mΩ RDS(ON) (Typical)
- 0.4 A to 1.6 A Adjustable Current Limit
- ±2% Accurate ILIMIT at 1A at 25°C
- ±3% Overvoltage, Undervoltage Threshold
- Programmable dVO/dt Control
- Fault Output for Thermal Shutdown, UVLO and
OVP - 40°C to 125°C Junction Temperature Range
- Auto-Retry and Latch-Off Versions
- UL2367 Recognized - File No. E169910
- UL60950 - Safe during Single Point Failure Test
The TPS25921 is a compact, feature rich eFuse with a full suite of protection functions. The wide operating voltage allows control of many popular DC buses. The precise ±2% current limit, at room temperature, provides excellent accuracy making the TPS25921 well suited for many system protection applications.
Load, source and device protection are provided with multiple programmable features including overcurrent, overvoltage and undervoltage. 3% threshold accuracy for UV and OV, ensures tight supervision of bus voltages, eliminating the need for supervisor circuitry. Fault flag output (FLT) is provided for system status monitoring and down stream load control.
For hot-plug-in boards, TPS25921 provides in-rush current control and programmable output ramp-rate. Output ramp rate is programmable using a capacitor at soft-start (SS) pin, for maximum design flexibility.
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技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS25921x 4.5V - 18V eFuse with Precise Current Limit and Over Voltage Protection 数据表 (Rev. C) | PDF | HTML | 2015-11-11 | ||
| 功能安全信息 | eFuse: Safety Certification and why it Matters | 2020-3-18 | ||||
| 证书 | TPS25921x UL Certificate of Compliance IEC 62368-1 | 2020-1-17 | ||||
| 应用手册 | Basics of eFuses (Rev. A) | 2018-4-5 |
设计与开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
TPS25921EVM-637 — 具有高精度电流限制功能的 TPS25921EVM-637 4.5-18V eFuse 评估模块
TPS25921xD 电子保险丝是采用小型封装的高度集成电路保护和电源管理解决方案。这些器件使用很少的外部组件,但可提供多种保护模式,能够非常有效地抵御过载、短路、电压浪涌和过多浪涌电流。电流限制水平可通过单个外部电阻器进行设置,且室温下电流限值的设定精度可达 ±2%。
此外,这些器件可切断输入总线,防止系统因过压事件而受到损坏(根据系统需要,用户可使用简单的电阻器来自行配置此功能)。
SLUC573 — TPS25921EVM-637 Design Calculator Tool
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| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
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