LT3505IMS8E

LT3505 - 1.2A, Step-Down Switching Regulator in 3mm x 3mm DFN

DESCRIPTION

The LT®3505 is a current mode PWM step-down DC/DC converter with an internal 1.4A power switch. The wide operating input range of 3.6V to 36V 40V maximum makes the LT3505 ideal for regulating power from a wide variety of sources, including unregulated wall transformers, 24V industrial supplies and automotive batteries. The oscillator can be programmed for high frequency operation allowing the use of tiny, low cost external components or it can be programmed for lower frequency operation to maximize efficiency.

FEATURES

Wide Input Range: 3.6V to 36V Operating, 40V Maximum

Up to 1.2A Output Current

Resistor-Programmable Fixed-Frequency Operation from 200kHz to 3MHz

Output Adjustable Down to 780mV

Short-Circuit Robust

Uses Tiny Capacitors and Inductors

Soft-Start

Low Shutdown Current: <2µA

Low VCESAT Switch: 350mV at 1A

Thermally Enhanced, Low Profile 3mm x 3mm DFN-8 and MSOP-8 Packages

APPLICATIONS

Automotive Battery Regulation

Industrial Control Supplies

Wall Transformer Regulation

Distributed Supply Regulation

Battery-Powered Equipment