The LTC1154 is a high-side micropower MOSFET driver that allows using low cost N-channel FETs for high-side switching applications. It features 8µA IQ standby current, 85µA IQ ON current, no external charge pump capacitors, 4.5V to 18V supply range, short-circuit protection, thermal shutdown via PTC thermistor, status output indicates shutdown, and is available in 8-pin SOIC package.
The LTC1154 is a single high‑side micropower MOSFET driver that fully enhances N‑channel power MOSFETs with ultra‑low standby current and built‑in charge‑pump. It includes protection features such as short‑circuit detection, thermal shutdown, and programmable over‑current sensing, making it suitable for automotive, industrial, and motor‑control applications.
The document provides absolute maximum ratings, electrical characteristics, typical performance curves, pin descriptions, truth tables, and application notes for resistive and inductive loads. Package options include 8‑lead SOIC and DIP variants, and the datasheet includes layout dimensions and mechanical drawings.
| Supply Voltage (Vg) Range | 4.5 V – 45 V |
|---|---|
| Standby Supply Current | 8 µA |
| Input High Voltage | 2 V |
| Input Low Voltage | 0.8 V |
| Drain Sense Threshold Voltage | 100 mV (typ) |
| Package Type | 8‑Lead Plastic SOIC or DIP |
The LTC1154 can operate up to a maximum supply voltage of 45 V.
The device is offered in an 8‑pin SOIC or an 8‑lead DIP package.