Current doubler delivering up to 10 A charging current, with efficiency of up to 98 % and powering up to 44 W
The DA9318 is optimized to handle high charging currents and at the same time ensure the safety of the battery and the system. It operates together with a main charger, which handles the pre-charge and constant voltage charging duties.
The current doubling is achieved with a high-efficiency capacitive divider that provides an output voltage of VIN/2, which allows the use of standard USB Type-CTMcables for charging currents up to 6 A. The peak efficiency of DA9318is 98 %. With maximum 8 A charging current, DA9318L variant can provide 35 W charging power, whereas the DA9318M variant provides 10 A output current and 44 W charging power.
Features
8 A output current (DA9318L)
10 A output current (DA9318M)
98 % efficiency at 3 A
5 % current sense accuracy (DA9318L)
10 % current sense accuracy (DA9813M)
Reverse and forward current protection in IDLE mode
Safe high-voltage direct charging
Safety timer and watchdog
8-bit ADC to measure voltage and current at the input and output, as well as temperature
Junction temperature monitoring
I2C compatible 2-wire interface
Benefits
Safe high-voltage direct charging
Automatic shutdown in fault condition
Travel adapter detection
No inductors
No input current ripple
<1 mm component height
Small PCB area
Standard 3 A Type-C™ cable
Built-in fault protection
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Direct charging in:
- Smartphones
- Tablets
- Battery packs
- Li-ion powered devices
Package
WLCSP 3.62 mm × 3.78 mm