fish001

ST1S40-based, 4A peak, 800 kHz fixed frequency PWM synchronous buck demonstration board with enable on/off function

STEVAL-ISA084V1

Overview

The STEVAL-ISA084V1, based on the ST1S40, is an internally compensated 800 kHz fixed-frequency PWM synchronous step-down converter demonstration board.

The ST1S40 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN (100% duty-cycle).
The ST1S40 integrates 95 mΩ high side switch and 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.
The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.
The device is protected through cycle-by-cycle current limiting in case of overload and is also protected by current foldback function with frequency reduction in case of short-circuit
The device is available with an enable on/off function.

Main features

V _in : 4 V to 18 V
Vout: 3.3 V
Maximum output current: 4 A
Switching frequency: 800 kHz
Short-circuit: protected
RoHS compliant

Design Files

Related Devices

Devices	Class	introduce	Datasheet
ST1S40		3 A DC step-down switching regulator	Download

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:2024-11-15 01:52:39

4G DTU
4G DTU ZLAN8305/ZLAN8305L is a high cost-effective serial port 232/485 to 4G DTU newly launched by Shanghai ZLAN . The core highlight of this model is that it supports temporary storage of M- level da
EEWORLD University Hall----At the 2018 Mobile World Congress, Eric Creviston envisions the future of 5G
At the 2018 Mobile World Congress, Eric Creviston envisioned the future of 5G : https://training.eeworld.com.cn/course/5078In the near future, 5G NSA will become a reality, and for this reason, smartp
【TouchGFX Design】Download to the development board
Last time I just used a computer to simulate it. This time I will use a real board. In addition to the board posted above, I still have some stock on hand. So I used a wide screen. First, prepare the
Verilog HDL Advanced Digital Design (Second Edition)
Based on the requirements and characteristics of digital integrated circuit system engineering development, this book uses Verilog HDL to model, design and verify digital systems, and provides an in-d
Air discharge ESD rectification case of Bluetooth speaker
ESD air discharge means that the static gun tip does not directly contact the metal, but is injected into the PCB board through air discharge; according to the test method of the experimental standard
Paid request for K210 baseboard design
Based on Kanzhi K210 chip, The baseboard only needs to realize: onboard relay and speaker + DVP camera interface + LCD interface

Datasheet More

Circuits More