STEVAL-ISA077V1: 3.3V or 5V @ 0.1 ~ 0.4A, 0.8 ~ 5.5Vin

Summary

The STEVAL-ISA077V1 demonstration board is based on the L6920DB which is a high efficiency monolithic step-up switching converter IC especially designed for battery powered applications, thanks to its minimum startup of 0.8 V, and a minimum operating voltage of 0.6 V.

It requires only three external components to realize the conversion from battery voltage to the selected output voltage.

It has a minimum output voltage of 1.8 V, which is enough to supply even the most advanced ASICs and microprocessors.

The high switching frequency allows the user to choose small inductors and output capacitors for their designs. Supervisory functions include reference voltage, low battery detection, and shutdown, which are provided with overcurrent protection.

Specifications

Manufacturer STMicroelectronics
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Normally In Stock
Topology Step Up
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 3.3 V
5 V
Current Out 100 mA
400 mA
Voltage In 0.8 ~ 5.5 V
Efficiency @ Conditions >90%, 3.6V in, 5V @ 0.7 ~ 410 mA
>88%, 2.4V in, 3.3V @ 2 ~ 300 mA
>83%, 1.2V in, 3.3V @ 0.7 ~ 150 mA
Voltage Out Range - Fixed
Features Current Limit (Adj. or Fixed)
Light Load Mode
Low Battery Warning
Over Current Protection
Reverse Polarity Protection
Shutdown, Enable, Standby
Switching Frequency Up to 1 MHz
Standby Current [Typical] 100 nA
Quiescent Current [Typical] 9 µA
Component Count + Extras 11 + 9
Internal Switch Yes
Design Author STMicroelectronics
Application / Target Market Audio: MP3 Players
Cell Phones
Digital Cameras
Portable Devices
Standby Current [Maximum] 1 µA
Quiescent Current [Maximum] 15 µA
Main I.C. Base Part L6920DB
Date Created By Author 2010-11
Date Added To Library 2012-11

Support Documents & Media

L6920DB - Datasheet STEVAL-ISA077V1 - Data Brief STEVAL-ISA077V1 - BOM

Media

STEVAL_ISA077V1_SCHEMATIC_FULL.png STEVAL_ISA077V1__BOARD_FULL.jpg STEVAL_ISA077V1_CHART1_FULL.png STEVAL_ISA077V1_CHART2_FULL.png