ETA9897 Datasheet | ETA

DESCRIPTION ETA9897 is an ultra-low power PMU with 2 modules: a 30V single cell Li+ battery linear charger and a 5V boost synchronous converter with true-shutoff function. The linear charger fully integrated constant current (CC) / constant voltage (CV) control module and charge FET, with minimal external devices. It also has pre-charge function for trickle charging deeply discharged battery and its fast charge current can be programmed by an external resistor. When CV charge stage is entered, charge will be terminated once the charge current drops to 1/10 of the programmed value. A “STAT” pin is also available to indicate the charge status. And the low power 5V boost converter is capable of delivering 0.4A current at 5V output. It can be shut down by pulling ENBST low, it will disconnect the output from the BAT to further decrease the system standby power. Its 1.4MHz switching frequency enable a very small external inductor with inductance as low as 2.2u H. The ETA9897, as a whole, is an ideal for the system solution that requires very low standby power and pact PCB board size. ETA9897 is housed in a ESOP8 package. FEATURES - Ultra low IQ when No switching: 1.2u A - 30V input standoff voltage - 4.2V charge termination voltage - Charge current programmable, up to 1.2A - Output Disconnect and SCP at 5V output - 5V/0.4A Output Power - Up to 94% Efficiency for boost converter - Operation over JEITA Range via Battery NTC - Logic Control Shutdown and Thermal shutdown - ESOP8 Package - Ro HS pliant APPLICATIONS - TWS BT earbuds charge case - Bluetooth application - Battery powered IOT module - Power Bank TYPICAL APPLICATION Li+ Battery Pack 10u F 2.2u H 4.7u F 6 VIN 5VOUT 1 7 BAT ENBST 2 4 TS STAT 3 8 SW ISET 5 10u F 2K Riset VOUT ENBST ORDERING INFORMATION PART No. ETA9897E8A PACKAGE ESOP8 TOP...