具有電源正常指示和使能功能的 3A 超低壓降穩(wěn)壓器，1.8V 輸出
| 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 (uVrms) | 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 @ 100 KHz (dB) | 29 |
| Dropout voltage (Vdo) (Typ) (mV) | 425 |
| Operating temperature range (C) | -40 to 125 |
- Input Supply Voltage 2.25 V to 5.5 V
- Conversions from 2.5-V Rail to 1.8-V Rail
- Stable with Ceramic Capacitors
- Low Ground Pin Current
- Load Regulation of 0.1% for 10 mA to 3-A Load Current
- 60-μA Typical Quiescent Current in Shutdown Mode
- Specified Output Current of 3 A
- Specified VOUT Accuracy of ±2.6% With
TJ from 0°C to +125°C - ERROR Flag Indicates VOUT Status
- Overtemperature and Overcurrent Protection
- ?40°C to +125°C Operating TJ Range
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.
