GENERAL DESCRIPTION

The SAA1504T is manufactured in a BCD Power Logic 70 process and is intended to be used as a protection circuit for single cell Li-ion battery packs. The current and voltage ratings are especially designed for use in battery packs for portable telephones such as GSM.

FEATURES

• Zero voltage start-up

• Discharge and charge overcurrent protection

• Automatic release of current protection at removal of charger or load

• Low current consumption in normal operating mode

• Very low current consumption when battery voltage is lower than 2.3 V

• Accurate voltage detection levels

• Continuous monitoring of battery voltage and charge or discharge current

• External power FETs are driven with an elevated supply voltage, reducing the on-resistance

• Able to accommodate 20 V charge voltage

• Read out of charge (disable) status

• Small package (SO8)

• Low external components count

• Temperature protection

• Charger reverse connection protection.