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功能优于比较器件,可直接替换。
TPS3808-Q1
- Qualified for Automotive Applications
- Power-On Reset Generator With Adjustable Delay Time: 1.25 ms to 10 s
- Very Low Quiescent Current: 2.4 µA Typical
- High Threshold Accuracy: 0.5% Typical
- Fixed Threshold Voltages for Standard Voltage Rails From 1.2 V to 5 V and Adjustable Voltage Down to 0.4 V Are Available
- Manual Reset (MR) Input
- Open-Drain RESET Output
- Temperature Range: –40°C to +125°C
- Small SOT-23 Package and WSON Package (TPS3808G01QDRVRQ1 only)
The TPS3808Gxx-Q1 microprocessor supervisory circuits monitor system voltages from 0.4 V to 5 V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and MR return above their thresholds.
The TPS3808Gxx-Q1 device uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted from 1.25 ms to 10 s by connecting the CT pin to an external capacitor. The TPS3808Gxx-Q1 has a very low typical quiescent current of 2.4 µA, so it is well suited for battery-powered applications. The device is available in a small SOT-23 package (one option available in WSON) and is fully specified over a temperature range of –40°C to +125°C (TJ).
For more information about TIs voltage supervisor portfolio, visit the Supervisor and Reset IC Overview Page page.
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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 | TPS3808Gxx-Q1 Low-Quiescent-Current Programmable-Delay Supervisory Circuit 数据表 (Rev. J) | PDF | HTML | 2017-6-13 | ||
| 功能安全信息 | TPS3808-Q1 Functional Safety FIT Rate and Failure Mode Distribution | 2019-12-19 | ||||
| 电子书 | 电压监测仪和电压检测器:提示、技巧和基础知识 | 英语版 | 2019-8-28 | |||
| 设计指南 | Automotive Power Reference Design for Low-Power TDA3x Based Systems (Rev. B) | 2017-6-14 | ||||
| 设计指南 | Automotive Power Frontend With Cold Crank Operation and EMI Filter Design Guide | 2015-11-30 | ||||
| 设计指南 | TIDA-00530 Test Results | 2015-10-13 |
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)。
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| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 6 | Ultra Librarian |
| WSON (DRV) | 6 | Ultra Librarian |