LP3990
- 1% Voltage Accuracy at Room Temperature
- Stable with Ceramic Capacitor
- Logic Controlled Enable
- No Noise Bypass Capacitor Required
- Thermal-Overload and Short-Circuit
Protection - Input Voltage Range, 2 V to 6 V
- Output Voltage Range, 0.8 V to 3.3 V
- Output Current, 150 mA
- Output Stable - Capacitors, 1 µF
- Virtually Zero IQ (Disabled), < 10 nA
- Very Low IQ (Enabled), 43 µA
- Low Output Noise, 150 µVRMS
- PSRR, 55 dB at 1 kHz
- Fast Start-Up, 105 µs
The LP3990 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low-noise, and low-quiescent current. The LP3990 will provide a 0.8-V output from the low input voltage of 2 V at up to a 150-mA load current. When switched into shutdown mode via a logic signal at the enable pin (EN), the power consumption is reduced to virtually zero.
The LP3990 is designed to be stable with space-saving ceramic capacitors with values as low as 1 µF.
Performance is specified for a –40°C to 125°C junction temperature range.
For output voltages other than 0.8 V, 1.2 V, 1.35 V, 1.5 V, 1.8 V, 2.5 V, 2.8 V, or 3.3 V, please contact the Texas Instruments sales office.
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 | LP3990 150-mA Linear Voltage Regulator for Digital Applications 数据表 (Rev. J) | PDF | HTML | 2014-9-26 |
设计与开发
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