MAX77278
PRODUCTIONUltra-Low Power PMIC with 3-Output SIMO, Power Path Charger Optimized for Small Li+, 425mA Current Sink, and 8 GPIOs
Ultra-Low Power PMIC with 3-Output SIMO, Power Path Charger Optimized for Small Li+, 425mA Current Sink, and 8 GPIOs
- Part Models
- 2
- 1ku List Price
- Starting From $3.62
Overview
- Highly Integrated
- Smart Power Selector™ Li+/Li-Poly Charger
- Three Output, SIMO Buck-Boost Regulator
- 50mA LDO with SIMO Fixed Headroom Control
- Programmable 250mA to 425mA Current Sink Driver
- Analog MUX Output for Power Monitoring
- Eight GPIOs (Configured for One-Button Wake-Up and Two-Button Shutdown)
- Low Power
- 0.3µA Standby Current
- 16µA Operating Current
- 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
- Eight GPIOs
- Factory OTP Options Available
- Small Size
- 3.15mm x 2.15mm x 0.7mm
- 35-Bump, 0.4mm-Pitch, 7x5 Ball Array, WLP
- Small Total Solution Size (24mm2)
The MAX77278 provides a highly-integrated battery charging and power supply solution for low-power applications where size and efficiency are critical.The device features a single-inductor multiple-output (SIMO) buck-boost regulator that provides three independently programmable power rails from a single inductor to minimize total solution size. A 50mA 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 device includes other features such as a programmable current sink that can be used to drive an IR-LED, 8 general-purpose input/output (GPIO) control pins, and an analog multiplex (AMUX) output that provides access to useful battery charging signals. A bidirectional I2C interface allows for configuring and checking the status of the device. An internal on/off controller provides a controlled startup sequence for the regulators and provides supervisory functionality when the device is on. Numerous factory programmable options allow the device to be tailored for many applications, enabling faster time to market.
Design Solution: Choose a Tailored SIMO PMIC for Your Portable Design ›
Applications
- Internet of Things (IoT) Gadgets
- Remote Controls, Game Pads, Media Center Controllers
- Smart Home Automation Pads, Thermostats, Battery-Powered User Interfaces
- Wearables, Fitness and Health Monitors
Documentation
Data Sheet 1
User Guide 2
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX77278EWB+ | Wafer-Level Package 5x7 Bump, Full Array | ||
| MAX77278EWB+T | Wafer-Level Package 5x7 Bump, Full Array |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
Software Development 2
Evaluation Kits
Evaluation Kit for the MAX77278
Resources
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