ohahaha

2A DC step-down switching regulator with 4V/36V input voltage range based on L5973D

STEVAL-ISA101V1

Overview

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.

Main features

Vin: 4 V to 36 V
Vout: 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

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-06-20 12:14:48

My 24lc01 program
I'm using msp430f169. Add 10K pull-up resistors on SCL and SDA.A2=A1=A0=0;SCL = BIT4;SDA = SDA;This program has passed. Thank you to everyone who provided guidance during this process.#include "msp430
Show the process of WEBENCH design + high brightness LED circuit design
Using 12V power supply, design a high brightness LED. In order to achieve a high brightness effect, select multiple LEDs in series.There are many solutions, just choose the first one in the default or
The world's weirdest two-sided car
According to the Golden Eagle Network, Vasyl Lazarenko, 39, is a craftsman from western Ukraine. Because his girlfriend likes to go for a drive in a convertible, and he thinks the hardtop is very prac
[Nucleo experience] + (II) Building and debugging the register version of the STM32L053 development library (Snippets)
[i=s]This post was last edited by mars4zhu on 2014-11-6 09:31[/i] ST's function library is very famous, especially the Stdperipheral Library of the F1, F2, and F4 series. However, ST is now mainly pro
Forward: Seven reasons why programmers can’t find a girlfriend
1. Poverty[/size][/font][/backcolor][/color] [color=#333333][backcolor=rgb(245, 245, 245)][font=Helvetica, Tahoma, Arial, sans-serif][size=14px] sans-serif][size=14px]I think this is a consensus. No m
How to light up a light-emitting diode between the live and neutral wires?
I use a red LED connected to a 100K resistor between the live and neutral wires, and the LED works normally. But when I use a blue LED connected to a 100K resistor between the live and neutral wires,

Datasheet More

Circuits More