Product Summary

The LT1074IT7 is a 5A monolithic bipolar switching regulator which requires only a few external parts for normal operation. The power switch, all oscillator and control circuitry, and all current limit components, are included on the chip. The topology is a classic positive buck configuration but several design innovations allow the LT1074IT7 to be used as a positive-to-negative converter, a negative boost converter, and as a flyback converter. The switch output is specified to swing 40V below ground, allowing the LT1074IT7 to drive a tapped-inductor in the buck mode with output currents up to 10A. The applications of the LT1074IT7 include Buck Converter with Output Voltage Range of 2.5V to 50V, Tapped-Inductor Buck Converter with 10A Output at 5V, Positive-to-Negative Converter, Negative Boost Converter and Multiple Output Buck Converter.

Parametrics

LT1074IT7 absolute maximum ratings: (1)Input Voltage: 45V; (2)Switch Voltage with Respect to Input Voltage: 64V; (3)Feedback Pin Voltage: –2V, +10V; (4)Shutdown Pin Voltage (Not to Exceed VIN): 40V; (5)ILIM Pin Voltage (Forced): 5.5V; (6)Maximum Operating Ambient Temperature Range: 0℃ to 70℃; (7)Maximum Operating Junction Temperature Range: 0℃ to 125℃; (8)Maximum Storage Temperature: –65℃ to 150℃; (9)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LT1074IT7 features: (1)5A Onboard Switch; (2)100kHz Switching Frequency; (3)Greatly Improved Dynamic Behavior; (4)Available in Low Cost 5 and 7-Lead Packages; (5)Only 8.5mA Quiescent Current; (6)Programmable Current Limit; (7)Operates Up to 60V Input; (8)Micropower Shutdown Mode.

Diagrams

LT1074IT7 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LT1074IT7
LT1074IT7

IC REG MULTI CONFIG ADJ TO220-7
Data Sheet
0-900: $4.59
LT1074IT7#PBF
LT1074IT7#PBF

IC REG MULTI CONFIG ADJ TO220-7
Data Sheet
0-1: $8.86
1-25: $5.89
25-100: $4.59