General Description

The APL3225provides complete Li+ charger protection against input over-voltage, input over-current and over temperature. When any of the monitored parameters is over the threshold, the IC turns off the charging current. All protections also have deglitch time against false triggering due to voltage spikes or current transients.

The APL3225 integrates a 5.5V LDO to prevent ACIN over shoot reaching CHR_LDO and OUT. When any transient peak voltage above 5.5V presenting inACIN pin, but be low OVP threshold, the internal LDO will clamp its output at 5.5V . When ACIN voltage exceeds OVP threshold, the

device will turn off charging current. The charging current is controlled by the GATDRV pin. When sourcing a current from the GATDRV pin, the OUT pin delivers the charging current which is 200-fold magnified in amplitude based on GATDRV’ s current.

特性 Features

? Provide OUT Pin 5V Voltage Clamping Protection

? Thermal Charging Regulation Protection

? Provide Input Over-voltage Protection

? Provide Input Over-current Protection

? Provide Over Temperature Protection

? Provide Reverse Current Blocking

? High Immunity of False Triggering

? High Accuracy Protection Threshold

? Low On Resistance 0.3W Ty p.

? Compact TDFN2x2-8 and DFN3x3-8 Packages

? Lead Free and Green Devices Available(RoHS Compliant)

Applications

?Cell Phones