STEVAL-ISB041V1: Single Cell Li-Ion/Li-Po Charger

Summary

The STEVAL-ISB041V1 product evaluation board is based on STBC02 battery power management, integrating a linear charger for single-cell Li-Ion batteries with battery protection functions, an LDO regulator, two SPDT load switches and intelligent reset logic.

The device uses a CC / CV algorithm to charge the battery; the fast-charge and pre-charge current can be programmed using an external resistor.

The input supply voltage is used to charge the battery and provide power to the LDO regulator. When an appropriate input voltage is not present and the battery is not empty, the device automatically switches to battery power.

When shutdown mode is activated, the battery power consumption is reduced to less than 100 nA: two embedded 3 Ω SPDT load switches intelligently manage the overall system power consumption. An advanced reset circuit with trigger signal is integrated.

The STEVAL-ISB041V1 can work in standalone mode and a single wire interface can be used to control the STBC02 for full operation. The STEVAL-ISB041V1 evaluation board provides full access to the STBC02 functions through header connectors and can be supplied via a micro-AB USB connector.

Key Features

Charges single-cell Li-Ion/Li-Po batteries with CC-CV algorithm and charge termination
Fast charge current programmable from 1 mA to 450 mA
Pre-charge current programmable from 1 mA to 450 mA
Adjustable floating voltage up to 4.45 V
Integrated always-on low quiescent LDO regulator
Integrated dual 3 Ω SPDT load switches
Integrated smart reset / watchdog logic
Single wire control interface

Specifications

Manufacturer	STMicroelectronics
Category	Power Management
Sub-Category	Battery Chargers
Eval Board Part Number	497-17258-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
Cell Type	Lithium Ion, Li-Ion Lithium Polymer, Li-Pol
Configuration	1 Cell
Voltage In	4.55 ~ 5.4 V
Voltage Out	4.45 V
Current Out	450 mA
Features	1-Wire Interface Auto Re-Charge Current Limit (Adj. or Fixed) ESD Protection Fault Indication LDO Regulator(s), On-Chip Over Charge Protection Over Current Protection Over Discharge Protection USB Interface
Quiescent Current [Typical]	1.4 mA
Sleep Mode Current [Typical]	100 nA
Component Count + Extras	16 + 21
Application / Target Market	Audio: MP3 Players Battery Chargers Medical Wearable Devices
Design Author	STMicroelectronics
Main I.C. Base Part	STBC02
Quiescent Current [Maximum]	- Not Given
Sleep Mode Current [Maximum]	- Not Given
Date Created By Author	2017-03
Date Added To Library	2018-06