TPS3898
- Very Small USON (1.45 mm × 1.00 mm) Package
- Adjustable Threshold Down to 500 mV
- Threshold Accuracy: 1% Over Temperature
- Capacitor-Adjustable Delay Time
- Low Quiescent Current: 6 µA (Typical)
- External Enable Input
- Open-Drain (Rated at 18 V) and Push-Pull Output
Options - Temperature Range: –40°C to 125°C
- Pin-for-Pin Compatible With MAX6895/6/7/8
The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 mV with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitor-adjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low.
For TPS389xA versions, both SENSE and ENABLE have a capacitor-adjustable delay. The output asserts after this capacitor-adjustable delay when both SENSE and ENABLE inputs are good. The TPS389xP devices have a small, 0.2-µs propagation delay from when the enable pin asserts to when the output pin asserts, provided SENSE is above the threshold.
All devices operate from 1.7 V to 6.5 V and have a typical quiescent current of 6 µA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small USON package and is fully specified over the temperature range of TJ = –40°C to 125°C.
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 | TPS389x Single-Channel, Adjustable Voltage Monitor in Ultra-Small Package datasheet (Rev. B) | PDF | HTML | 2014/9/2 | ||
| 應用說明 | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | 2020/3/17 | ||||
| 應用說明 | Programmable Push-Button, Pulse Detector, and Pulse Generator Solutions | 2020/3/10 | ||||
| 選擇指南 | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | 2020/2/28 | ||||
| 電子書 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/6/28 | ||||
| Application brief | Latching a Voltage Supervisor (Reset IC) (Rev. A) | 2019/4/5 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs | 2011/9/19 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TPS3897A-6P-EVM047 — 適用於 TPS389xx 單通道可調整監控電路的評估模組
SBVC043 — TPS389x Reset Time Delay Calculator
TIDA-00657 — SMBus 1 至 4 芯混合動力升壓模式電池充電控制器參考設計
TIDA-00657 參考設計可以高達 3A 的高充電電流實現高效率 (90+% @1-2A) 及更快速的充電。此設計使用 TI 的 BQ24780 工業創新充電控制器，具有混合功率升壓模式，並且具備電源和處理器熱監控功能。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| USON (DRY) | 6 | Ultra Librarian |