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Data Sheet
BQ25618/619 I2C Controlled 1-Cell 1.5A Battery Charger with 20mA
Termination and 1A Boost Operation
1 Features
- Single chip solution to charge
wearable accessories from adapter or battery
- High-efficiency, 1.5MHz,
synchronous switch-mode buck charger
- 95.5% charge efficiency
at 0.5A and 94.5% efficiency at 1A
- ±0.5% charge voltage
regulation (10mV step)
- I2C
programmable JEITA profile of charge voltage, current and temperature
thresholds
- Low termination current
with high accuracy 20mA±10mA
- Small inductor form
factor of 2.5 x 2.0 x 1.0mm3
- Boost mode with output from 4.6V
to 5.15V
- 94% boost efficiency at
1A output
- Integrated control to
switch between Charge and Boost mode
- PMID_GOOD pin control
external PMOS FET for protection against fault conditions
- Single input supporting USB
input, high-voltage adapter, or wireless power
- Support 4V to 13.5V input
voltage range with 22V absolute max input rating
- Programmable input
current limit (IINDPM) with I2C (100mA to 3.2A, 100mA/step)
- Maximum power tracking by
input voltage limit (VINDPM) up to 5.4V
- VINDPM threshold automatically tracks
battery voltage
- Narrow VDC (NVDC) power path
management
- System instant-on with no
battery or deeply discharged battery
- Flexible I2C
configuration and autonomous charging for optimal system performance
- High integration includes all
MOSFETs, current sensing and loop compensation
- Low RDSON 19.5mΩ
BATFET to minimize charging loss and extend battery run time
- BATFET control for Ship
mode, and full system reset with and without adapter
- 7µA low battery leakage current
in Ship mode
- 9.5µA low battery leakage current
with system standby
- High accuracy battery charging
profile
- ±5% charge current
regulation
- ±7.5% input current
regulation
- Remote battery sensing to
charge faster
- Programmable top-off
timer for full battery charging
- Safety Related
Certifications:
- IEC 62368-1 CB
Certification
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