MM3758

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 battery.
This IC does not require externally provided sensing resistor
or reverse-current protection diode, enabling reductions in the
component count and the amount of generated heat.

This IC is battery temperature profile compliant, Function to limit charging current and voltage in low and high battery temperature ensures safety of battery.

Built-in 2ch charge status flag can be confirmed status in detail.

Linear Charger IC (Single function Type)
1. Built-in Power MOSFET
2. Built-in reverse current protection
3. JEITA battery temperature profile compliant
4. Built-in thermal regulation function
5. 2ch charge status flag (Nch open drain)
6. Operating temperature range　Ta=-40～85℃
Mobile device(Wearable device, healthcare device, others)

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Parameter	Specifications	Unit
Rating voltage (VIN)	6	V
Operating voltage range (VIN)	4.3～5.8	V
Charge voltage	4.2	V
Fast charge current	1500	mA
Pre charge current	Fast charge current x0.1	mA
Fast charge starting voltage	2.9	V
Full charge current	Fast charge current x0.1	mA
BAT leakage current (max.)	2	μA
Thermal regulation temperature	122	℃
Charge timer	Pre:1, Fast:5	Hour