STEVAL-ISA077V2: 3.3V, 5V, or Adj @ 100 ~ 400mA: 1 ~ 5.5V in

Summary

The L6920 is a high efficiency step-up controller requiring only three external components to realize the conversion from the battery voltage to the selected output voltage.

The start up is guaranteed at 1V and the device is operating down to 0.6V.

Internal synchronous rectifier is implemented with a 120mΩ P-channel MOSFET and, in order to improve the efficiency, a variable frequency control is implemented.

Specifications

Manufacturer	STMicroelectronics
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	497-13915-ND
Eval Board Supplier	STMicroelectronics
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	200 mA
Voltage In	1 ~ 5.5 V
Efficiency @ Conditions	>90%, 3.6V in, 5V @ 1 ~ 400 mA >90%, 2.4V in, 3.3V @ 600 uA ~ 70 mA >85%, 2.4V in, 5V @ 0.5 ~ 200 mA >80%, 1.2V in, 5V @ 200 uA ~ 60 mA >80%, 1.2V in, 3.3V @ 100uA ~ 80 mA
Voltage Out Range	2 ~ 5.2 V
Features	Low Battery Warning Reverse Polarity Protection Shutdown, Enable, Standby
Switching Frequency	160 kHz
Standby Current [Typical]	100 nA
Quiescent Current [Typical]	11 µA
Component Count + Extras	5 + 9
Internal Switch	Yes
Design Author	STMicroelectronics
Application / Target Market	Audio: MP3 Players Cell Phones Digital Cameras DVD/Blu-ray Players Medical Portable Devices USB Powered Devices
Standby Current [Maximum]	1 µA
Quiescent Current [Maximum]	18 µA
Main I.C. Base Part	L6920D
Date Created By Author
Date Added To Library	2011-03