TPS3890
- Power-On-Reset (POR) Generator with Adjustable Delay Time: 40 µs to 30 s
- Very Low Quiescent Current: 2.1 µA (Typical)
- High Threshold Accuracy: 1% (max)
- Precision Hysteresis
- Fixed and Adjustable Threshold Voltages:
- Fixed Thresholds for Standard Rails:
1.2 V to 3.3 V - Adjustable Down to 1.15 V
- Fixed Thresholds for Standard Rails:
- Manual Reset (MR) Input
- Open-Drain RESET Output
- Temperature Range: –40°C to +125°C
- Package: 1.5-mm × 1.5-mm WSON
The TPS3890 is a precision voltage supervisor with low-quiescent current that monitors system voltages as low as 1.15 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 manual reset (MR) return above the respective thresholds. The TPS3890 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 40 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890 has a very low quiescent current of 2.1 µA and is available in a small 1.5-mm × 1.5-mm package, making the device well-suited for battery-powered and space-constrained applications. The device is fully specified over a temperature range of –40°C to +125°C (TJ).
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技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS3890 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. A) | PDF | HTML | 2016年 5月 24日 |
| Application note | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | 2020年 3月 17日 | ||
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019年 6月 28日 | ||
| Application brief | Latching a Voltage Supervisor (Reset IC) (Rev. A) | 2019年 4月 5日 | ||
| Application note | Comparing Voltage and Processor Monitoring Solutions | 2019年 4月 5日 | ||
| Application brief | Using The Manual Reset On Voltage Supervisors to Debounce a Pushbutton Switch | 2019年 3月 8日 | ||
| Circuit design | Auxiliary circuits for high-performance audio | 2019年 1月 16日 | ||
| Application brief | Mitigating the Voltage Glitch on the Output of a Voltage Supervisor (Reset IC) D | 2018年 6月 27日 | ||
| Application note | How Comparator Topology Influences Propagation Delay | 2017年 4月 5日 | ||
| Technical article | Tips and tricks for optimizing your voltage supervisor | PDF | HTML | 2017年 3月 7日 |
設計與開發
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| 封裝 | 引腳 | 下載 |
|---|---|---|
| WSON (DSE) | 6 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點