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OMS252系列

The OMS252 series is a lithium-ion/lithium polymer rechargeable battery protection IC for 2-serial-cell
The OMS252 series is a lithium-ion/lithium polymer rechargeable battery protection IC for 2-serial-cell, using high voltage CMOS process and including high-accuracy voltage detectors and delay circuit. The OMS252 series is suitable for detection and protection of two-series-cell Lithium-polymer or Lithium-ion battery packs from overcharge, over-discharge, overcurrent, and short circuit status.
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Description

The OMS252 series is a lithium-ion/lithium polymer rechargeable battery protection IC for 2-serial-cell, using high voltage CMOS process and including high-accuracy voltage detectors and delay circuit. The OMS252 series is suitable for detection and protection of two-series-cell Lithium-polymer or Lithium-ion battery packs from overcharge, over-discharge, overcurrent, and short circuit status.


Features

(1)   Internal high accuracy voltage detection circuit

         Overcharge detection voltage                         3.5~4.6V                Accuracy±25mV (Ta=+25°C)

                                                                                                                Accuracy±30mV (Ta=-10~+60°C)

Overcharge release voltage                             3.5~4.7V                Accuracy±50mV 

Overdischarge detection voltage                    1.8~3.2V                Accuracy±40mV

Overdischarge release voltage                        1.8~3.2V                Accuracy±50mV

Discharging overcurrent detection voltage   +20~300mV           Accuracy±10/15mV

Charging overcurrent detection voltage        -20~300mV            Accuracy±20mV

Short detection voltage                                   0.50~1.5V              Accuracy±150mV

(2)   Detection delay times are generated by an internal circuit.                                            

(3)   35V High-withstanding-voltage device is used for charger connection pins.

(4)   0V battery charge function  “Allow” or “Inhibit”.

(5)   Standby function“Available”and “Unavailable”.

(6)   Wide operating temperature range                   Ta=-40°C~+85°C

(7)   Low current consumption (Ta=+25°C)

       Operation mode                 3.0μA typ., 5μA Max.

       Power down mode              0.1μA Max.

(8)  Ultra small package             SOT-23-6

(9)  Lead-free, Halogen-Free, Green packaging.


Applications
⚫Lithium-ion/ Lithium polymer rechargeable battery pack.

⚫High precision protectors for cell-phones and any other gadgets using on board Lithium-ion/ Lithium polymer battery pack.