MM3635

We have lineup of charge control IC that are suitable for charging 1-cell Li-ion battery and Li polymer battery.
This IC features stable charging by high accurate voltage/current control.
High safety is achieved by abnormal protection by battery temperature detection using external thermistor, and charging timer.
In addition, it is possible to support a wide range of charging voltage and charging current, so can be built a charging system compatible with various battery.

Outline

This IC is linear charge control IC for 1-cell Li-ion and Li-polymer batteries.
It is capable of charging from 0V of battery voltage, so it is
adaptive for low capacity battery (coin) .
It is capable of setting of BAT regulation voltage according to various battery.
It does not require an externally provided sensing resistor or
reverse-current protection diode, enabling reductions in the
component count and the amount of generated heat.
Function to charge control (OFF) at high/low battery temperature ensures safety of battery.

Linear Charger IC (Single function Type)
1. Built-in Power MOSFET
2. Built-in reverse current protection
3. Charge voltage selectable (CVSEL pin)
4. Charge control charge temperature by thermistor (Stop:Over 45℃, under 0℃)
5. Built-in thermal regulation function
6. Charge status flag (Nch open drain)
7. Space saving package (2.7mm x 2.5mm x 0.55mm)
8. Operating temperature range　Ta=-40～85℃
Small mobile device(Wearable device, healthcare device, others)

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Parameter	Specifications	Unit
Rating voltage (VIN)	6	V
Operating voltage range (VIN)	4.5～5.5	V
Charge voltage	4.2/4.05	V
Fast charge current	700	mA
Pre charge current	Fast charge current x0.1	mA
Fast charge starting voltage	3	V
Full charge current	Fast charge current x0.1	mA
BAT leakage current (max.)	2	μA
Thermal regulation temperature	93	℃
Charge timer	Pre:1, Fast:5	Hour