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.
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| 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 (µVrms) | 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 at 100 KHz (dB) | 42 |
| Dropout voltage (Vdo) (typ) (mV) | 260 |
| Operating temperature range (°C) | -40 to 125 |
| TO-263 (KTT) | 5 | 154.8384 mm² 10.16 x 15.24 |
| TO-263 (NDQ) | 5 | 142.3416 mm² 10.16 x 14.01 |
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