GENERAL DESCRIPTION

The SGM40567 is designed for the monolithic circuit

with high-precision linear constant-current, and

constant-voltage charging, which is specifically for

small capacity Li-Ion/polymer Li-Ion secondary battery.

It can complete the whole processes of pre-charge,

fast-charge, trickle floating charge, voltage fold-back

holding, resistive voltage drop compensation and

recharge stand-alone. The maximum charge voltage is

fixed with five options:

SGM40567-3.65 corresponds to 3.65V/3.709V/4.547V

SGM40567-4.05 corresponds to 4.05V/4.108V/5.047V

SGM40567-4.2 corresponds to 4.2V/4.257V/5.237V

SGM40567-4.3 corresponds to 4.3V/4.356V/5.367V

SGM40567-4.4 corresponds to 4.4V/4.466V/5.489V

The charge current is set with the external resistor. The

slow blinking LED indicates charging in progress and

the continuous shining LED within a certain time

indicates charging completion, which can be charged

even with weak energy. It can operate with

constant-voltage power supply, additionally, depending

on its features and control structure. It can charge for

the loose coupling coil with large voltage fluctuations

and it also works for the solar batteries with reverse

current. Therefore, it can provide flexible power supply

options for wearable devices and mini portable devices.

It has the voltage fold-back holding function and

thermal current limit function so that the external power

source can be used to supply power to the load for a

long time safely and stably.

The SGM40567 is available in a Green

WLCSP-0.92×1.16-6B package and is rated over the

-40℃ to +125℃ temperature range.

FEATURES

● Stand-Alone Working of Complete Processes for

Single-Cell Battery Charging

● Suitable for Li-Ion Phosphate Battery/

Li-Ion/Polymer Li-Ion/Lithium Titanate/

Nickel-Metal Hydride Secondary Battery and

EDLC Capacitor Charging

● Optional Maximum Charge Voltage:

3.65V to 5.5V

● High Accuracy Safe and Fast Charging

● 4% Output Voltage Fold-Back Holding Function

● Works with Loose Coupling Coil

● Works with Solar Batteries

● Saturated Conduction Charging

● Automatic Thermal Current Limit

● Power Saving Indication Mode

● Available in a Green WLCSP-0.92×1.16-6B

Package

APPLICATIONS

Bluetooth Headsets, Bluetooth Mouses

Wireless Thermometers, Wireless Oximeters, Wireless

Pulsimeters

Active Keys, Active Beacons

Photovoltaic Storage Maintenance, Hub Dynamo

Storage Maintenance