The LT®3580 is a PWM DC/DC converter containing an internal 2A, 42V switch. The LT3580 can be configured as either a boost, SEPIC or inverting converter. Capable of generating 12V at 550mA or –12V at 350mA from a 5V input, the LT3580 is ideal for many local power supply designs.
The LT3580 is a PWM DC/DC converter that contains an internal 2 A, 42 V switch. It can be configured as a boost, SEPIC or inverting converter and is capable of generating 12 V at 550 mA or –12 V at 350 mA from a 5 V input. The device features an adjustable oscillator, soft‑start, UVLO and can be synchronized to an external clock.
The datasheet provides absolute maximum ratings, electrical characteristics, typical performance curves, pin descriptions, and package dimensions. It also includes typical application schematics for boost, SEPIC and inverting topologies, as well as start‑up and protection operation details.
| Operating Voltage Range | 2.5 V to 32 V |
|---|---|
| Internal Power Switch Current | 2 A |
| Switching Frequency Set Range | 200 kHz to 2.5 MHz |
| Package Options | 8‑Lead (3 mm × 3 mm) Plastic DFN or MSOP |
| Soft‑Start Function | Integrated |
| Undervoltage Lockout (UVLO) | User configurable |
| Synchronization Capability | Synchronizable to external clock |
The LT3580 operates from 2.5 V up to 32 V input.
It can be set up as a boost, SEPIC, or inverting converter.
Yes, the device can be synchronized to an external clock.
The internal power switch is rated for 2 A continuous current.