MAX77786

RECOMMENDED FOR NEW DESIGNS

18.2VIN, 5.5A 1-Cell Li+ Battery Charger for USB Type-C Power Delivery

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.65

Viewing:

Part Details

High-Efficiency Single-Cell Switching Charger
- Up to 5.5A Charging with MAX77786
- Up to 3.5A Charging with MAX77785
- 90% Buck Efficiency at 4A, 15V Input
- Up to 5.5A Input Current Limit with AICL (MAX77786)
- Up to 3.5A Input Current Limit with AICL (MAX77785)
+26V Absolute Maximum Input Voltage Rating
4.7V to 18.2V Input Operating Voltage Range
Reverse Boost with Programmable Output Voltage Options up to 10.805V
- Up to 16.2W for MAX77786
- Up to 10.8W for MAX77785
- Dedicated Boost enable input
Integrated Battery True-Disconnect FET
- R_DSON = 7.7mΩ
- Programmable Discharge Current Limit up to 10A
- Shipping Mode and Low Battery Leakage Current
- 1.3MHz Switching Frequency with 1μH Inductor
- Disconnect Input (DISQBAT)
Safety
- Battery Temperature Sensing and Charge Safety Timer
- JEITA Guideline Compliant
- Thermal Regulation and Thermal Shutdown
- System Voltage OVLO/UVLO
USB Switch with BC1.2 Detection
Spread Spectrum for Noise-Sensitive Applications
Charge Status Output for LED
Push-Button Input for Exiting from Ship Mode
Programmable Unplug Detection Output
Dedicated Input for Suspend Mode (SUSPND)
I²C Interface
2.96 mm x 2.96 mm WLP

Part Models: 2
1ku List Price: Starting From $1.65

Documentation

Data Sheet 1

MAX77785 / MAX77786 Data Sheet (Rev.0) 02/28/2024

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
MAX77786EWJ+	49-WLCSP-N/A	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX77786EWJ+T	49-WLCSP-N/A	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

Evaluation Software 1

max77785_max77786_setup_v0.8.27.zip

Hardware Ecosystem

Parts	Product Life Cycle	Description
MAX77986	RECOMMENDED FOR NEW DESIGNS	19VIN, 3.5/5.5A 1-Cell Li+ Battery Charger with Smart Power Selector and OTG for USBC PD

Evaluation Kits

Buy Now View Details

Features and Benefits

High-Efficiency Single-Cell Switching Charger
- Up to 5.5A Charging with the MAX77786
- 90% Buck Efficiency at 4A, 15V Input
4.7V to 18.2V Input Operating-Voltage Range
Reverse Boost with Programmable Output-Voltage Options up to 10.805V
Charge-Status Output for LED
Push-Button Input for Exiting from Ship Mode
Dedicated Input for Suspend Mode (SUSPND)
USB Type-C Version 1.3- and PD 3.0-Compliant
Sink/Source/DRP Port Support
Programmable Power Supply (PPS) Sink Support
Fast Role-Swap Initial Sink Support
Integrated V_CONN Switch with Overcurrent Protection (OCP)
Support Try.Snk State
Battery Charging 1.2 (BC1.2) Legacy Charger Detection
Programmable Unplug Detection

Product Details

The MAX77785/MAX77786 evaluation kits (EV kit) are fully assembled and tested printed circuit boards (PCB) that demonstrate the MAX77785/MAX77786 single-cell lithium-ion battery chargers.

The MAX77785/MAX77786 are for 1S Li+ battery applications and can operate with a 4.7V to 18.2V input voltage with a maximum charging current up to 3.5A/5.5A. The MAX77785/MAX77786 ICs offer a reverse boost as well as fully integrated low-power loss switches to provide small solution size and high efficiency. The EV kits demonstrate the performance of the MAX77785/MAX77786 charger and provide the convenience of evaluating full USB Type-C^® power-delivery (PD) solutions with the MAX77958 USB Type-C PD controller. This combination allows fast charging of the battery through the USB Type-C port as well as reverse powering the USB Type-C port with battery on-the-go (OTG) mode.

A Micro-B USB cable is included in the EV kit to serve as the interface from a USB port on a Windows^® PC to the subordinate I2C port on the MAX77785/MAX77786.