LT1176 is a 1.2A switching regulator with a 100kHz switching frequency and excellent dynamic performance, which can be used for 5V positive buck converter, positive-to-negative converter, negative boost converter and flyback converter.
The LT1176/LT1176-5 is a monolithic bipolar switching regulator that requires only a few external parts. It operates as a buck converter with an input range of 8 V to 35 V, and can also be used as a positive‑to‑negative converter, negative boost converter, or flyback converter. The device features a true analog multiplier in the feedback loop for fast response and includes on‑chip current limiting for overload protection.
Key specifications include a 100 kHz switching frequency, only 8 mA quiescent current, a preset 5 V output version, and a peak switch rating of 1.2 A. Thermal resistance is 90 °C/W for the 8‑lead DIP package, limiting continuous power dissipation to about 0.5 W‑1 W. The datasheet provides detailed electrical characteristics, package dimensions, and application hints for designers.
| Switching Frequency | 100 kHz |
|---|---|
| Quiescent Current | 8 mA |
| Preset Output Voltage | 5 V |
| Input Voltage Range (buck mode) | 8 V to 35 V |
| Peak Switch Current Rating | 1.2 A |
| Thermal Resistance (DIP package) | 90 °C/W |
The device operates at a switching frequency of 100 kHz.
The LT1176 has a low quiescent current of only 8 mA.
The maximum input voltage in buck mode is 35 V.
The thermal resistance for the 8‑lead DIP package is 90 °C/W.