MAX77857
Info : RECOMMENDED FOR NEW DESIGNS
searchIcon
cartIcon

MAX77857

2.5V to 16V Input, 7A Switching Current High-Efficiency Buck-Boost Converter

Show More showmore-icon

Enable 20W USB PD Sourcing with 1/3 Solution Size

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Viewing: Part Details
arrow-icon

Not the part you were looking for?

viewall Go to Product Selection Table
file View Data Sheet (Rev.3)
Open Interactive Page external-link
Documentation View All Documentation
Part Models 10
1ku List Price Starting From $1.05
Features
  • Wide Input Voltage Range: 2.5V to 16V
  • Default Output Voltage
    • 5V with Internal Feedback Resistors
    • 3V to 15V with External Feedback Resistors
  • I2C-Programmable Output Voltage after Startup
    • 4.5V to 15V with Internal Feedback Resistors
    • 3.0V to 15V with External Feedback Resistors, See Table 1
  • Maximum Output Current
    • Buck Mode: Up to 6A
    • Boost Mode: Up to 4A (Boost Ratio ≤ 1.3)
  • 7A Typical Switching Current
  • RSEL Configuration
    • I2C Interface Slave Address
    • Switching Current Limit Threshold
    • Internal/External Feedback Resistors
  • I2C Programming
    • Output Voltage (DVS)
    • Slew Rate of Output Voltage Change
    • Switching Current Limit Threshold
    • Switching Frequency
    • Forced PWM Mode Operation (FPWM)
    • Power-OK (POK) Status and Fault Interrupt Masks
  • Soft-Start
  • Output Active Discharge
  • Open-Drain Power-OK (POK) Monitor and Fault Condition Interrupt (MAX77857B/C Only)
  • Protection Features
    • Undervoltage Lockout (UVLO)
    • Overcurrent Protection (OCP)
    • Overvoltage Protection (OVP)
    • Thermal Shutdown (THS)
  • High Density Interconnect (HDI) PCB not Required (See the PCB Layout Guideline section)
  • Available in 2.83mm x 2.03mm 35 WLP or 31 WLP or 3.5mm x 3.5mm 16 FC2QFN
Additional Details
show more Icon

The MAX77857 is a high-efficiency, high-performance buck-boost converter targeted for systems requiring a wide input voltage range (2.5V to 16V). It features 7A switching current and can supply up to 6A output current in buck mode and up to 4A in boost mode (Boost Ratio ≤ 1.3). It operates in PWM mode and implements an automatic SKIP mode to improve light-load efficiency.

The default output voltage is 5V when using internal feedback resistors. It can also be configured to any default output voltages between 3V and 15V when using external feedback resistors. The output voltage is adjustable dynamically through the I2C serial interface (see the Output Voltage Configuration section).

The SEL pin allows a single external resistor to program four different I2C interface slave addresses, four different switching current limit thresholds, and selection between external/internal feedback resistors. The different switching current limit thresholds allow the use of lower profile and smaller external components that are optimized for a particular application. The use of external feedback resistors allows for a wider output voltage range and customizable output voltages at startup.

The I2C serial interface is optional and allows for dynamically controlling the output voltage, slew rate of the output voltage change, switching-current limit threshold, switching frequency, and forced PWM mode operation. The I2C-programmed settings have priority over the RSEL decoded settings.

The MAX77857 is available in a 2.83mm x 2.03mm, 35-bump and 31-bump wafer-level package (WLP) and a 3.5mm x 3.5mm, 16-lead Flip Chip QFN package (FC2QFN).

Applications

  • USB Power Delivery (USB-PD) OTG
  • Qualcomm® Quick ChargeTM
  • USB VBUS Supply and DRP (Dual Role Power) Ports
  • DSLR, DSLR Lens
  • Display Power
  • Up to 3-Cell Li-Ion Battery Applications
  • Notebook Computer, Tablet PC
Show More Arrow image
file View Data Sheet (Rev.3)
Documentation View All Documentation
Part Models 10
1ku List Price Starting From $1.05
modal bookmark icon

{{modalTitle}}

modal close icon

{{modalDescription}}

{{dropdownTitle}}

input down arrow
  • {{defaultSelectedText}}
    • {{#each projectNames}}
  • {{name}}
    • {{/each}} {{#if newProjectText}}
  • plus icon {{newProjectText}}
    • {{/if}}
{{#if toggleButtonDescription}}
{{toggleButtonDescription}}
{{/if}} {{#if newProjectTitle}}

{{newProjectTitle}}

{{projectNameErrorText}}

{{/if}}

MAX77857

Documentation

1
overlayclose

Filters

1 Applied

mobileoverlaydownarrow
  • All
    TickIcon
  • Data Sheet
  • All
    TickIcon
  • English
resetfilter

Reset Filters

Data Sheet

1

PDF Vector

PDF

PDF Vector

HTML

UPDATED 03/25/2022
English

MAX77857: 2.5V to 16V Input, 7A Switching Current High-Efficiency Buck-Boost Converter Data Sheet (Rev.3)

Open PDF File

redirect
3.19 M

Open Interactive Page

redirect
download

Download PDF

There are no results matching this criteria. Try resetting your filters or searching for a different term

close icon

Documentation

Video

1

Thumbnail Image

Video

2022-10-04

06:54

Introduction to the MAX77857 2.5V to 16V Input, 18W Output High-Efficiency Buck-Boost Converter

Learn More
Show More Arrow image

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
MAX77857AEWQ+ 31-WLCSP-N/A
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77857AEWQ+T 31-WLCSP-N/A
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77857BEFE+ 16-LFCSP-3.5X3.5X0.55 external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77857BEFE+T 16-LFCSP-3.5X3.5X0.55 external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77857BEWB+ 35-WLCSP-N/A external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77857BEWB+T 35-WLCSP-N/A external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77857CEFE+ 16-LFCSP-3.5X3.5X0.55 external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77857CEFE+T 16-LFCSP-3.5X3.5X0.55 external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77857CEWB+ 35-WLCSP-N/A external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77857CEWB+T 35-WLCSP-N/A external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

Software & Part Ecosystem

Evaluation Kits 3

reference details image

MAX77857QEVKIT

MAX77857Q Evaluation Kit

zoom

MAX77857QEVKIT

MAX77857Q Evaluation Kit

download icon

Download

 print icon

Print
MAX77857QEVKIT
MAX77857Q Evaluation Kit

Features and Benefits

  • Proven PCB Reference Design and Layout Benefit
  • Fully Assembled and Tested
  • Sense Points for High-Accuracy Measurements
  • Accessible Test Point Pins for EN, POKB/INTB, VIO, and I2C Serial Interface SCL, SDA
  • MAXUSB_INTERFACE# Allows Easy Communication with a Windows PC
  • GUI Software that Drives I2C Serial Interface for Optional Software Control
  • Startup Output Voltage Adjustable Through External Feedback Resistors
  • Output Voltage Dynamically Adjustable Through I2C Serial Interface
  • I2C Slave Address, Switching Current Limit, and Feedback Configuration Adjustable Using RSEL (R9)
Buy Now View Details

Product Detail

The MAX77857Q evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77857 in a FC2QFN package, a high-efficiency, high-performance buck-boost regulator with a switching current of 7A. The IC is capable of 2.5V to 16V input and dynamically adjustable output between 4.5V to 15V when using internal feedback resistors, or between 3V to 15V when using external feedback resistors. The EV kit is factory-configured as internal feedback with default startup output voltage at 5V. Other startup voltages can be achieved with external feedback resistors. The output voltage can be adjusted dynamically through the I2C serial interface.

I/O pins are available to support the I2C serial interface, Enable function, and interrupt/Power-OK indicator. The I2C slave address, switching current limit, and feedback configuration can be adjusted by changing the RSEL resistor value (R9). MAXUSB_INTERFACE# allows the use of Windows®-based software with a friendly graphical user interface (GUI) as well as a detailed register-based interface to exercise all features of the IC. The EV kit is compatible with any version of the MAX77857 FC2QFN IC (MAX77857BEFE+T is the default installed on the EV kit).

Resources

pdf icon

ZIP

MAX77857QEVKIT ODB Files - Design Files Download

1.06 M

Show More Arrow image
reference details image

MAX77857WGEVKIT

Evaluation Kit for MAX77857 (WLP)

zoom

MAX77857WGEVKIT

Evaluation Kit for MAX77857 (WLP)

download icon

Download

 print icon

Print
MAX77857WGEVKIT
Evaluation Kit for MAX77857 (WLP)

Features and Benefits

  • Proven PCB Reference Design and Layout Benefit
  • Fully Assembled and Tested
  • Sense Points for High-Accuracy Measurements
  • Accessible Test Point Pins for EN, POKB/INTB, VIO, and I2C Serial Interface SCL, SDA
  • Web-Based GUI that Drives I2C Serial Interface for Optional Software Control
  • Startup Output Voltage Adjustable Through External Feedback Resistors
  • Output Voltage Dynamically Adjustable Through I2C Serial Interface
  • I2C Slave Address, Switching Current Limit, and Feedback Configuration Adjustable Using RSEL (R9)
Buy Now View Details

Product Detail

The MAX77857 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77857, a high-efficiency, high-performance buck-boost regulator with a switching current of 7A. The IC is capable of 2.5V to 16V input and dynamically adjustable output between 4.5V to 15V when using internal feedback resistors, or between 3V to 15V when using external feedback resistors. The EV kit is factory-configured as internal feedback with a default startup output voltage at 5V. Other startup voltages can be achieved with external feedback resistors. The output voltage can be adjusted dynamically through the I2C serial interface.

I/O pins are available to support the I2C serial interface, enable function, and interrupt/Power-OK indicator. The I2C slave address, switching current limit, and feedback configuration can be adjusted by changing the RSEL resistor value (R9). An onboard MAX32625PICO allows the use of a web-based friendly graphical-user interface (GUI) as well as a detailed register-based interface to exercise all features of the IC. The EV kit is compatible with any version of the MAX77857 WLP IC (MAX77857BEWB+T is the default installed on the EV kit).

Resources

pdf icon

ZIP

MAX77857WGEVKIT Gerber Files Download

1.16 M

Show More Arrow image

MAX77857WEVKIT

Evaluation Kit for the MAX77857

zoom

MAX77857WEVKIT

Evaluation Kit for the MAX77857

download icon

Download

 print icon

Print
MAX77857WEVKIT
Evaluation Kit for the MAX77857

Features and Benefits

  • Proven PCB Reference Design and Layout Benefit
  • Fully Assembled and Tested
  • Sense Points for High-Accuracy Measurements
  • Accessible Test Point Pins for EN, POKB/INTB, VIO, and I2C Serial Interface SCL, SDA
  • MAXUSB_INTERFACE# Allows Easy Communication with a Windows PC
  • GUI Software that Drives I2C Serial Interface for Optional Software Control
  • Startup Output Voltage Adjustable Through External Feedback Resistors
  • Output Voltage Dynamically Adjustable Through I2C Serial Interface
  • I2C Slave Address, Switching Current Limit, and Feedback Configuration Adjustable Using RSEL (R9)
Buy Now View Details

Product Detail

The MAX77857 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77857, a high-efficiency, high-performance buck-boost regulator with a switching current of 7A. The IC is capable of 2.5V to 16V input and dynamically adjustable output between 4.5V to 15V when using internal feedback resistors, or between 3V to 15V when using external feedback resistors. The EV kit is factory-configured as internal feedback with default startup output voltage at 5V. Other startup voltages can be achieved with external feedback resistors. The output voltage can be adjusted dynamically through the I2C serial interface.

I/O pins are available to support the I2C serial interface, Enable function, and interrupt/Power-OK indicator. The I2C slave address, switching current limit, and feedback configuration can be adjusted by changing the RSEL resistor value (R9). MAXUSB_INTERFACE# allows the use of Windows®-based software with a friendly graphical user interface (GUI) as well as a detailed register-based interface to exercise all features of the IC. The EV kit is compatible with any version of the MAX77857 WLP IC (MAX77857BEWB+T is the default installed on the EV kit).

Applications

  • USB Power Delivery (USB-PD) OTG
  • Qualcomm® Quick ChargeTM
  • USB VBUS Supply and DRP (Dual Role Power) Ports
  • DSLR, DSLR Lens
  • Display Power
  • Up to 3-Cell Li-Ion Battery Applications
  • Notebook Computer, Tablet PC

Resources

pdf icon

ZIP

MAX77857WEVKIT ODB Files - Design Files Download

1.06 M

Show More Arrow image

Evaluation Kits3

evaluation kit item images

MAX77857QEVKIT

MAX77857Q Evaluation Kit
evaluation kit item images

MAX77857WGEVKIT

Evaluation Kit for MAX77857 (WLP)

MAX77857WEVKIT

Evaluation Kit for the MAX77857

Tools & Simulations 2

Recently Viewed

Part Details
Documentation
Evaluation Kit
Tools & Simulations
Latest Discussions