LT1374 is a 500kHz monolithic buck mode switching regulator with a constant 500kHz switching frequency, high power 16-pin TSSOP package, and the use of surface mount components. It features a saturating switch design, wide output current range, and high efficiency.
The LT1374 is a monolithic buck‑mode switching regulator that integrates a 4.5 A power switch, oscillator, control and logic circuitry in a single chip. It operates at a constant 500 kHz frequency, allowing very small external inductors and capacitors, and offers cycle‑by‑cycle current limiting, shutdown and synchronization features.
Typical applications include portable computers, battery chargers and distributed power systems. The device is offered in several surface‑mount packages such as 7‑lead TO‑220, 8‑lead SO‑8 and 16‑lead TSSOP, and supports both fixed‑output and adjustable‑output configurations.
| Maximum Output Current | 4.5 A |
|---|---|
| Switching Frequency | 500 kHz |
| Shutdown Current | 20 µA |
| Effective Supply Current (no load) | 2.5 mA |
The shutdown current is specified as 20 µA.
The regulator operates at a constant 500 kHz switching frequency.
The LT1374 is offered in 7‑lead plastic TO‑220, 8‑lead plastic SO‑8, and 16‑lead exposed‑pad TSSOP packages.