The LT3012B is a high voltage, micropower low dropout linear regulator. The device is capable of supplying 250mA of output current with a dropout voltage of 400mV. Designed for use in battery-powered or high voltage systems, the low quiescent current (40µA operating) makes the LT3012B an ideal choice. Quiescent current is also well controlled in dropout. Other features of the LT3012B include the ability to operate with very small output capacitors. The regulators are stable with only 3.3µF on the output while most older devices require between 10µF and 100µF for stability. Small ceramic capacitors can be used without any need for series resistance (ESR) as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting and reverse current protection. The device is available with an adjustable output with a 1.24V reference voltage.
The LT3012B is a high‑voltage, micropower low‑dropout linear regulator capable of delivering 250 mA with a dropout voltage of 400 mV. It features a wide input range (4 V‑80 V), low quiescent current (40 µA), and an adjustable output from 1.24 V to 60 V, making it suitable for battery‑powered and telecom applications.
The device is offered in thermally enhanced 16‑lead TSSOP and 12‑pin DFN packages with an exposed pad for improved heat dissipation. Internal protection includes reverse‑battery protection, current limiting, thermal limiting, and reverse‑output protection. Detailed electrical characteristics, typical performance curves, and pin‑function descriptions are provided for designers.
| Input Voltage Range | 4 V to 80 V |
|---|---|
| Output Current | 250 mA |
| Dropout Voltage | 400 mV |
| Quiescent Current | 40 µA |
| Adjustable Output Range | 1.24 V to 60 V |
| Reverse‑Battery Protection | Enabled |
| Thermal Limiting | Enabled |
| Package Types | 16‑lead TSSOP, 12‑pin DFN |
| Operating Temperature Range | -40 °C to 125 °C |
| ADJ Pin Bias Current | 30 nA typical |
The dropout voltage is 400 mV at a 250 mA load.
The quiescent current is 40 µA.
It operates from 4 V up to 80 V.
It is offered in a 16‑lead TSSOP and a 12‑pin DFN package.