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MAX77650 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX77650 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 82 page  General Description The MAX77650/MAX77651 provide highly-integrated bat- tery 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 configu- rable linear charger supports a wide range of Li+ battery capacities and includes battery temperature monitoring for additional safety (JEITA). The devices include other features such as current sinks for driving LED indicators and an analog multiplexer that switches several internal voltage and current signals to an external node for monitoring with an external ADC. A bidi- rectional I2C interface allows for configuring and check- ing the status of the devices. An internal on/off controller provides a controlled startup sequence for the regulators and provides supervisory functionality when the devices are on. Numerous factory programmable options allow the device to be tailored for many applications, enabling faster time to market. Benefits and 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 Shutdown 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 x 2.15mm x 0.7mm WLP Package • 30-Bump, 0.4mm-Pitch WLP, 6x5 Array • Small Total Solution Size (19.2mm2) Applications ● Bluetooth Headphones/Hearables ● Fitness, Health, and Activity Monitors ● Portable Devices ● Internet of Things (IoT) Ordering Information appears at end of data sheet. 19-8550; Rev 7; 9/18 Smart Power Selector is a trademark of Maxim Integrated Products, Inc. Simplified Application Circuit PWR_HLD GPIO VBUS CHGIN VSYS SYS GND PGND 2.05V SBB0 1.2V SBB1 1.5µH LXA LXB VIO SDA SCL nIRQ IN_LDO 1.85V LDO nEN nRST 3.3V SBB2 LED0 LED1 LED2 PROCESSOR VIO/Power SYS ADC INPUT MAX77650 PWR_HLD nRST SDA SCL nIRQ SYSTEM RESOURCES IN_SBB GPIO * * AMUX AMUX BATT + THM TBIAS * * *PULLUP RESISTORS NOT DRAWN BST MAX77650/MAX77651 Ultra-Low Power PMIC with 3-Output SIMO and Power Path Charger for Small Li+ EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. |
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