DESCRIPTION

The DS2720 single-cell rechargeable Li+ protection IC provides electronic safety functions required for rechargeable Li+ applications including protecting the battery during charge, protection of the circuit from damage during periods of excess current flow and maximization of battery life by limiting the level of cell depletion. Protection is facilitated by electronically disconnecting the charge and discharge conduction path with switching devices such as low-cost N-channel power MOSFETs.

FEATURES

■ Rechargeable Lithium-Ion (Li+) Safety Circuit

- Overvoltage Protection

- Overcurrent/Short-Circuit Protection

- Undervoltage Protection

- Overtemperature Protection

■ Controls High-Side N-Channel Power MOSFETs Driven from 9V Charge Pump

■ System Power Management and Control Feature Support

■ Eight Bytes of Lockable EEPROM

■ Dallas 1-Wire® Interface with Unique 64-Bit Device Address

■ 8-Pin μSOP Package

■ Low Power Consumption:

- Active Current: 12.5μA typ

- Sleep Current: 1.5μA typ