具有使能功能的 30mA、低 IQ、低压降稳压器
| Output options | Fixed Output |
| Iout (Max) (A) | 0.03 |
| Vin (Max) (V) | 5.2 |
| Vin (Min) (V) | 1.9 |
| Vout (Max) (V) | 1.5 |
| Vout (Min) (V) | 1.5 |
| Fixed output options (V) | 1.5 |
| Noise (uVrms) | 300 |
| Iq (Typ) (mA) | 0.026 |
| Thermal resistance θJA (°C/W) | 171 |
| Rating | Catalog |
| Load capacitance (Min) (μF) | 1 |
| Regulated outputs (#) | 1 |
| Features | Enable |
| Accuracy (%) | 2 |
| PSRR @ 100 KHz (dB) | 23 |
| Dropout voltage (Vdo) (Typ) (mV) | 400 |
| Operating temperature range (C) | -40 to 125 |
- Input Voltage: 1.9 V to 5.2 V
- Operation From a Low Input Voltage: 1.9 V
- Accurate Output Voltage: 1.5 V ± 0.09 V
- Quiescent Current in Shutdown: < 1.5 μA
- Stable With an Output Capacitor: 1 μF
- Ensured Output Current: 30 mA
- Low Output Voltage Noise: 300 μVRMS
- Low Quiescent Current: 29-μA Typical
- Stable With a Ceramic Capacitor
- Logic Controlled Enable
- Fast Turnon and Turnoff
- Thermal-Overload and Short-Circuit Protection
- –40°C to +125°C Junction Temperature Range
The LP3992 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low noise, and low quiescent current. Battery life is prolonged by the ability of the LP3992 to provide a 1.5-V output from the low input voltage of 1.9 V. Additionally, when switched to a shutdown mode via a logic signal at the enable (EN) pin, the power consumption is reduced to virtually zero. The LP3992 also features short-circuit and thermal-shutdown protection.
The LP3992 is designed to be stable with space-saving ceramic capacitors as small as 1 μF. Performance is specified for a –40°C to +125°C temperature range.
For output voltages other than 1.5 V, and for additional package options, contact TI.
For all available packages, see the orderable addendum at the end of the data sheet.
