The LT3150 3150f is a fast transient response, low input voltage, very low dropout linear regulator controller that provides 1.8V to 1.5V, 4A of very low dropout linear regulation (typical dropout voltage = 65mV at IOUT = 4A).
The LT3150 is a low‑dropout linear regulator controller that uses an external N‑channel MOSFET to achieve fast transient response and very low dropout voltage. It integrates a fixed‑frequency 1.4 MHz boost converter to generate gate drive for the MOSFET and includes a multifunction shutdown pin for current‑limit, over‑voltage, and thermal protection.
The document provides absolute maximum ratings, detailed electrical characteristics, typical performance curves, pin descriptions, package dimensions, and a typical application circuit. It is intended for designers of microprocessor, ASIC, and logic‑termination power supplies requiring up to 4 A output current.
| Input Voltage Range (Boost Regulator) | 0.9 V – 14 V |
|---|---|
| Switching Frequency | 1.4 MHz |
| Maximum Duty Cycle | 86 % |
| Switch Current Limit | 800 mA |
| Switch VCE(sat) | 350 mV |
| Quiescent Current (Linear Regulator) | 45 mA |
| Package Type | 16‑lead Plastic SSOP |
The absolute maximum rating for the input voltage (Vina) is 10 V.
Typical dropout voltage is 65 mV when delivering 4 A.
The device is supplied in a 16‑lead SSOP package.