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).
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 bidirectional I2C interface allows for configuring and checking 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.
|Part Number||Primary Topology||Monitor/Control Features||DC-DC/Power Features||Battery Charger Features||Interface Type||VIN|
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| Pricing Notes: |
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C|
|App Note||6628||How a SIMO PMIC Enhances Power Efficiency for Wearable IoT Designs|
|App Note||6601||How to Get Longer Battery Life for Wearables with a SIMO Power Converter Architecture|
|App Note||6485||How to Perform Real-Time Power Measurements with a Power Accumulator|
|User Guide||6428||MAX77650/MAX77651 Programmer's Guide|