| Output options | Fixed Output |
| Iout (Max) (A) | 0.8 |
| Vin (Max) (V) | 5.5 |
| Vin (Min) (V) | 2.25 |
| Vout (Max) (V) | 1.8 |
| Vout (Min) (V) | 1.8 |
| Fixed output options (V) | 1.8 |
| Noise (uVrms) | 75 |
| Iq (Typ) (mA) | 7.5 |
| Thermal resistance θJA (°C/W) | 60 |
| Rating | Catalog |
| Load capacitance (Min) (μF) | 10 |
| Regulated outputs (#) | 1 |
| Features | Enable, Power good |
| Accuracy (%) | 2 |
| PSRR @ 100 KHz (dB) | 42 |
| Dropout voltage (Vdo) (Typ) (mV) | 260 |
| Operating temperature range (C) | -40 to 125 |
- 2.25V to 5.5V Input Voltage Range
- 1.8V Fixed Output Voltage
- 800 mA Output Load Current
- +/- 2.5% VOUT Accuracy over Line, Load, and Full-Temperature Range from -40°C to +125°C
- Stable with tiny 10 μF Ceramic Capacitors
- 0.20% Output Voltage Load Regulation from 10 mA to 800 mA
- Enable pin
- Error Flag Indicates Status of Output Voltage
- 1 μA of Quiescent Current in Shutdown
- 40dB of PSRR at 100 kHz
- Over-Temperature and Over-Current Protection
- DDPAK/TO-263 and PFM Surface Mount Packages
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The LP38511-1.8 Fast-Transient Response Low-Dropout Voltage Regulator offers the highest-performance in meeting AC and DC accuracy requirements for powering Digital Cores. The LP38511-1.8 uses a proprietary control loop that enables extremely fast response to change in line conditions and load demands. Output Voltage DC accuracy is specified at ±2.5% over line, load and full temperature range from -40°C to +125°C. The LP38511-1.8 is designed for inputs from the 2.5V, 3.3V, and 5.0V rail, is stable with 10uF ceramic capacitors, and has a fixed 1.8V output. An Error Flag feature monitors the output voltage and notifies the system processor when the output voltage falls more than 15% below the nominal value. The LP38511-1.8 provides excellent transient performance to meet the demand of high performance digital core ASICs, DSPs, and FPGAs found in highly-intensive applications such as servers, routers/switches, and base stations.