The LF00AB/C series of voltage regulators have a very low dropout voltage and very low quiescent current, making them ideal for low noise and low power applications, especially in battery-powered systems. The device features a logic-controlled electronic shutdown function that can be used to place a portion of the circuit in standby mode when not needed, reducing overall power consumption. The device is available in PENTAWATT, TO-220, ISOWATT220, DPAK, and PPAK packages, with a wide range of output voltages to meet the needs of different applications.
The LFOOAB/C series are very low‑dropout (0.45 V) linear regulators offered in multiple packages (PENTAWATT, TO‑220, ISOWATT220, DPAK, PPAK) with selectable output voltages from 1.25 V to 12 V. They feature low quiescent current (typ. 50 µA in off mode, 500 µA in on mode) and a logic‑controlled shutdown pin for power‑saving applications.
The document provides absolute maximum ratings, thermal data, electrical characteristics for each voltage version, ordering numbers, mechanical dimensions and legal disclaimer. Key performance figures include up to 500 mA output current, 80 dB supply‑voltage rejection, and an operating temperature range of –40 °C to 125 °C.
| Dropout Voltage (typical) | 0.45 V |
|---|---|
| Quiescent Current (on mode) | 500 µA |
| Maximum Output Current | 500 mA |
| Supply Voltage Rejection (typ.) | 80 dB |
| Operating Temperature Range | -40 °C to 125 °C |
| Input Voltage Range | -0.5 V to 40 V |
| Storage Temperature Range | -40 °C to 150 °C |
| Thermal Resistance (junction‑case) | 3 °C/W (PENTAWATT) |
The typical dropout voltage is 1.25 V at an output current of 200 mA.
The regulators can supply up to 500 mA of output current.
The devices operate from –40 °C to 125 °C.
Typical supply‑voltage rejection is 80 dB.