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
