The LT3581 is a PWM DC/DC converter with built-in fault protection features to aid in protecting against output shorts, input/output overvoltages, and overtemperature conditions. It can be easily configured in Boost, SEPIC, Inverting or Flyback configurations, and is capable of generating 12V at 830mA, or –12V at 625mA from a 5V input.
The LT3581 is a PWM DC‑DC converter that can be configured as a boost, SEPIC, inverting or flyback regulator. It features a 3.3 A current limit, short‑circuit protection, and an adjustable switching frequency up to 2.5 MHz. The device supports a wide input voltage range of 2.5 V to 22 V and includes built‑in undervoltage lockout and shutdown functions.
The IC is offered in 14‑Pin 4 mm × 3 mm DFN and 16‑Lead MSE packages, with detailed pin assignments for feedback, gate drive, fault indication, and synchronization. Electrical characteristics, typical performance curves, and package dimensions are provided for design reference.
| Input Voltage Range | 2.5 V to 22 V |
|---|---|
| Switching Frequency Range | 200 kHz to 2.5 MHz |
The device can operate at a switching frequency up to 2.5 MHz.
It supports an input voltage from 2.5 V to 22 V.