TPS3890-Q1
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: -40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
- Power-On-Reset (POR) Generator with Adjustable Delay Time: 25 µs to 30 s
- Very Low Supply 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 5 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-Q1 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-Q1 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 25 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890-Q1 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
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS3890-Q1 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. B) | PDF | HTML | 2018/2/28 | ||
| 功能安全資訊 | TPS3890-Q1 Functional Safety FIT Rate and Failure Mode Distribution | 2019/12/18 | ||||
| 電子書 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/6/28 | ||||
| 技術文章 | How voltage references and supervisors help achieve ASIL functional safety goals | PDF | HTML | 2019/5/10 |
設計與開發
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TPS3890EVM-775 — 具有可編程延遲的 TPS3890 低靜態電流、1% 準確度監控電路評估模組
TIDA-050008 — 具改善電壓監控的 ADAS 電源參考設計
此車用電源參考設計支援額外的精密電壓監控和視窗監視功能，適用於先進駕駛輔助系統 (ADAS) 中的安全 MCU。這些 ADAS 系統可控制駕駛功能，例如自動緊急煞車、車道保持輔助和自適應巡航控制。高準確度電壓偵測器可監控各軌，以提升監控能力，協助客戶實現功能安全目標。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSE) | 6 | Ultra Librarian |