LP3990是TI公司的一款单通道LDO产品，LP3990是用于数字应用的 150mA 线性电压稳压器，本页介绍了LP3990的产品说明、应用、特性等，并给出了与LP3990相关的TI元器件型号供参考。
LP3990 - 用于数字应用的 150mA 线性电压稳压器 - 单通道LDO - 线性稳压器(LDO) - TI公司（Texas Instruments，德州仪器）
- 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
- Cellular Handsets
- Hand-Held Information Appliances
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.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LP3990 | DSBGA (4) | 1.324 mm x 1.045 mm (MAX) |
| WSON (6) | 2.90 mm x 1.60 mm | |
| SOT-23 (5) | 3.00 mm x 3.00 mm |
