LM3724
- Precise Monitoring of 2.5V, 3.3V, and 5V Supply Voltages
- Fully Specified Over
Temperature
- Industrial: −40°C to +85°C
- Extended: −40°C to +125°C
- 100 ms Minimum Power-On Reset pulse Width,
190 ms Typical:
- Active-Low RESET Output (LM3722)
- Active-High RESET Output (LM3723)
- Active-Low RESET Open Drain Output (LM3724)
- Guaranteed RESET Output Valid for VCC ≥ 1V
- Low Supply Current, 6µA Typical
- Power Supply Transient Immunity
- Compatible with MAX811/812 Applications
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The LM3722/LM3723/LM3724 microprocessor supervisory circuits monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down, brown-out conditions, and manual reset.
The LM3722/LM3723/LM3724 asserts a reset signal whenever the supply decreases below the factory-programmed reset threshold. Reset will be asserted for at least 100ms even after VCC rises above the reset threshold.
The LM3722 has an active-low RESET push-pull output. The LM3723 has an active-high RESET push-pull output. The LM3724 has an active-low open-drain RESET output.
Three standard reset voltage options are available, suitable for monitoring 5V, 3.3V, and 2.5V supply voltages. Additional reset voltages are also available; contact Texas Instruments for details.
With a low supply current of only 6µA, the LM3722/LM3723/LM3724 are ideal for use in portable equipment. The LM3722/LM3723/LM3724 are available in the 5-pin SOT-23 package.
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 | LM3722/LM3723/LM3724 5-Pin Microprocessor Reset Circuits datasheet (Rev. E) | 2013/3/21 | |||
| 電子書 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/6/28 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |