MAX77654
Ultra-Low Power PMIC Featuring Single-Inductor, 3-Output Buck-Boost, 2-LDOs, Power-Path Charger for Small Li+, and Ship Mode
Highly-Integrated Battery Charging and Power Solution for Low-Power, Size-Constrained Applications
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Key Features
Applications/Uses
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 5.5 |
| # Step-Down Outputs | 3 |
| # Step-Up Outputs | 3 |
| # LDO Outputs | 2 |
| Battery Charger Features | Battery Charger Charge Timer Input Current Limit Smart Pwr. Selector Thermal Die Regulation Thermistor Input USB Input |
| VOUT (V) (min) | 0.8 |
| VOUT (V) (max) | 5.5 |
| Package/Pins | THIN WLP/30 |
| Budgetary Price (See Notes) | 1.9 |
Simplified Block Diagram
Technical Docs
Design Solution: Prolong Your Smart Watch Lifetime with SIMO ›
Who Had the Winning Project in Our MAX32620FTHR Design Contest?
Enhancing Battery Life and Audio Performance in Mobile Devices
SIMO Calculator
Benefits of SIMO Architecture
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 5.5 |
| # Step-Down Outputs | 3 |
| # Step-Up Outputs | 3 |
| # LDO Outputs | 2 |
| Battery Charger Features | Battery Charger Charge Timer Input Current Limit Smart Pwr. Selector Thermal Die Regulation Thermistor Input USB Input |
| VOUT (V) (min) | 0.8 |
| VOUT (V) (max) | 5.5 |
| Package/Pins | THIN WLP/30 |
| Budgetary Price (See Notes) | 1.9 |
Key Features
- Highly Integrated
- 3x Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
- Supports Wide Output Voltage Range from 0.8V to 5.5V for all SIMO Channels
- 2x 100mA LDO/LSW
- Smart Power Selector™ Li+/Li-Poly Charger
- 3x GPIO Resources
- Analog MUX Output for Power Monitoring
- Factory Ship Mode (< 200nA IQ)
- Watchdog Timer
- 3x Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
- Low Power
- 0.3μA Shutdown Current
- 6μA Operating Current (3 SIMO Channels + 2 LDOs)
- 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
- 6.52mm2 Wafer-Level Package (WLP)
- 30-Bump, 0.4mm Pitch, 6x5 Array
Applications/Uses
- Bluetooth Headphones, Hearables
- Wireless Speakers
- Fitness, Health, and Activity Monitors
- Wearables
- Safety and Security Monitors
- Sensor Nodes
- Portable Consumer Devices
- Internet of Things (IoT)
Description
The MAX77654 provides highly-integrated battery charging and power supply solutions for low-power applications where size and efficiency are critical. The IC features a SIMO buck-boost regulator that provides three independently programmable power rails from a single inductor to minimize total solution size. Two 100mA LDOs provide ripple rejection for audio and other noise-sensitive applications. The LDOs can also be configured as load switches to manage power consumption by disconnecting external blocks when not required. A highly-configurable linear charger supports a wide range of Li+ battery capacities and includes battery temperature monitoring for additional safety (JEITA).
This device includes three GPIOs 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 serial 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 while they are on. Numerous factory programmable options allow the device to be tailored for many applications, enabling faster time to market.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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