BUY LM2587T-ADJ https://www.utsource.net/itm/p/382166.html
SIMPLE SWITCHER 5A Flyback Regulator
Description:
The LM2587T-ADJ is a monolithic integrated circuit designed to provide all the active functions for a step-up (boost) switching regulator with a minimum of external components.
Features:
High Efficiency up to 95%
Input Voltage Range: 4.5V to 40V
Output Voltage Range: 1.23V to 37V
Output Current up to 3A
Internal Frequency Compensation
Internal Soft-Start
Internal Over-Temperature Protection
Internal Short-Circuit Protection
Low Shutdown Current
Available in TO-220 Package
Applications:
Automotive and Industrial Applications
Battery Chargers
Portable Instruments
High Efficiency DC/DC Converters
Step-up (Boost) Converters
Low Voltage/High Current Systems
(For reference only)
