STEVAL-ISA101V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – 2 A DC step-down switching regulator with 4 V/36 V input voltage range based on the L5973D

STEVAL-ISA101V1
2 A DC step-down switching regulator with 4 V/36 V input voltage
range based on the L5973D
Data brief
Features
■ V_in: 4 V to 36 V
■ V_out: 1.235 V to 36 V
■ Output current: 2 A DC
■ Internal oscillator switching frequency: 250 kHz
■ Short-circuit protection
■ Inhibit and thermal shutdown
■ RoHS compliant
Description
The STEVAL-ISA101V1 demonstration board is
based on the L5973D, a step-down monolithic
switching regulator with 2 A DC (2.5 A switch
peak current) current capability over the output
voltage range (1.235 V to 36 V).
The operating input voltage ranges from 4 V to
36 V. The device is based on BCD5 technology.
The embedded power element is a P-channel
D-MOS transistor so the driving stage does not
require any bootstrap capacitor and the duty cycle
can range up to 100%.
An internal oscillator fixes the switching frequency
at 250 kHz. A synchronization pin is available
when a higher switching frequency (up to 700
kHz) is required.
Pulse-by-pulse current protection and a frequency
foldback feature always guarantee an effective
short-circuit protection. Other features include
voltage feed-forward, protection against feedback
disconnection, inhibit and thermal shutdown.
Previous sales code: EVAL5973D.
May 2012
Doc ID 023235 Rev 1
For further information contact your local STMicroelectronics sales office.
1/4
www.st.com
4