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MAX77651 Maxim Integrated Ultra-Low Power PMIC with 3-Output SIMO and Charger Optimized for Small Li+
Bluetooth Headphones/Hearables
Fitness, Health, and Activity Monitors
Internet of Things (IoT)
Portable Devices
MAX77651 Maxim Integrated Ultra-Low Power PMIC with 3-Output SIMO and Charger Optimized for Small Li+
Key Features
Highly Integrated
Smart Power Selector™ Li+/Li-Poly Charger
3 Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
150mA LDO
3-Channel Current Sink Driver
Analog MUX Output for Power Monitoring
Low Power
0.3µA Standby Current
5.6µA Operating Current (3 SIMO Channels + LDO)
Charger Optimized for Small Battery Size
Programmable Fast-Charge Current from 7.5mA to 300mA
Programmable Battery Regulation Voltage from 3.6V to 4.6V
Programmable Termination Current from 0.375mA to 45mA
JEITA Battery Temperature Monitors Adjust Charge Current and Battery Regulation Voltage for Safe Charging
Flexible and Configurable
I2C Compatible Interface and GPIO
Factory OTP Options Available
Small Size
2.75mm × 2.15mm × 0.7mm WLP Package
30-Bump, 0.4mm-Pitch WLP, 6x5 Array
Small Total Solution Size (19.2mm2)
The MAX77650/MAX77651 provide highly-integrated battery charging and power supply solutions for low-power wearable applications where size and efficiency are critical. Both devices feature a SIMO buck-boost regulator that provides three independently programmable power rails from a single inductor to minimize total solution size. A 150mA LDO provides ripple rejection for audio and other noise-sensitive applications. A highly configurable linear charger supports a wide range of Li+ battery capacities and includes battery temperature monitoring for additional safety (JEITA)
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