The LP38513 fast-response ultra-low dropout linear regulator operates from a 2.25-V to 5.5-V input supply. This device responds very quickly to step changes in line or load conditions, making it suitable for low-voltage microprocessor applications. Developed on a CMOS process, with a PMOS pass transistor, the LP38513 has low quiescent-current operation independent of the output load current. Ground Pin Current: Typically 12 mA at 3-A load current.Disable Mode: Typically 60 µA quiescent current when the enable (EN) pin is pulled low.ERROR Flag: The ERROR flag goes low if VOUT falls more than typically 15% below the nominal value.Precision Output Voltage: A specified VOUT accuracy of ±2.6% with TJ from 0°C to 125°C.
For all available packages, see the orderable addendum at the end of the data sheet.| Output options | Fixed Output |
| Iout (max) (A) | 3 |
| 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) | 45 |
| Iq (typ) (mA) | 10 |
| Thermal resistance θJA (°C/W) | 32 |
| Rating | Catalog |
| Load capacitance (min) (µF) | 10 |
| Regulated outputs (#) | 1 |
| Features | Enable, Power good |
| Accuracy (%) | 2 |
| PSRR at 100 KHz (dB) | 29 |
| Dropout voltage (Vdo) (typ) (mV) | 425 |
| Operating temperature range (°C) | -40 to 125 |
| TO-220 (NDH) | 5 | 86.0552 mm² 10.16 x 8.47 |
| TO-263 (KTT) | 5 | 154.8384 mm² 10.16 x 15.24 |
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