MAX77801

High–Efficiency Buck–Boost Regulator

2A High-Efficiency Buck and Boost Operating Including Seamless Transition Between Buck and Boost Mode


Please check latest availability status for a specific part variant.

Description

The MAX77801 is a high-current, high-efficiency buck-boost targeted to mobile applications that use a Li-ion battery or similar chemistries. The MAX77801 utilizes a four-switch H-bridge configuration to support buck and boost operating modes. Buck-boost provides 2.60V to 4.1875V of output voltage range and up to 2A output current.

A unique control algorithm allows high efficiency, outstanding performances in line/load transient response, and seamless transition between buck and boost modes.

DVS (dynamic voltage scaling) input allows the host processor to switch between two preprogrammed output voltages. This feature minimizes power loss for given load conditions. The ramp-up and ramp-down slew rates are programmable through I²C.

The MAX77801 features I²C-compatible, 2-wire serial interface consisting of a bidirectional serial-data line (SDA) and a serial-clock line (SCL). It supports SCL clock rates up to 3.4MHz.

MAX77801: Typical Application Circuit High efficiency, high current buck boost regulator with I2C interface typical application circuit Enlarge+

Key Features

  • 2A High-Efficiency Buck and Boost Operation Including Seamless Transition Between Buck and Boost Mode
  • Flexibility Supports Various Designs
    • VOUT Range from 2.60V to 4.1875V with 12.5mV Step
    • High-Speed (Up to 3.4MHz) I²C Serial Interface
  • Low Quiescent Current, High Efficiency, and Dynamic Voltage Scaling Enable System to Be More Efficient
    • DVS Input
    • Up to 97% of Peak Efficiency
    • 55μA Quiescent Current
  • High Switching Frequency and Small Package Reduce Solution Size
    • 2.5MHz Switching Frequency
    • Available in WLP and TQFN Packages
  • Safety Features Enhance Device and System Reliability
    • POK Output
    • Soft-Start
    • True Shutdown™
    • Thermal Shutdown and Short-Circuit Protection

Applications/Uses

  • Battery-Powered Applications
  • Smartphones and Tablets
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
VOUT1 Tolerance
(±%)
IOUT1
(A)
IOUT1
(A)
Output Adjust. MethodSwitch TypeSynchronous SwitchingPower Good SignalICC
(mA)
DC-DC OutputsAlternate TopologyOper. Freq.
(kHz)
Design ToolsPackage/PinsOper. Temp.
(°C)
Budgetary
Price
minmaxminmaxmaxSee Notes
MAX77801 2.35.52.64.1875
3.3
3.4
122PresetInternalYesYes0.071
Step-Down
Step-Up
2500EE-Sim
TQFN-CU/20
WLP/20
-40 to +85$1.10 @1k
See All Step-Down/Up Switching Regulators (18)
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.


MAX77801EVKIT: Evaluation Kit for MAX77801

Technical Documents

Tutorial 660 Regulator Topologies for Battery-Powered Systems

Quality and Environmental Data

Product Reliability Reports: MAX77801.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • EE-Sim: Design & Simulate MAX77801
  • Software
    MAX77801 Evaluation Kit Software  
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

    Related Resources


    MAX20098
    Versatile 36V 2MHz Buck Controller with 3.5µA IQ

    • Meets Stringent OEM Module Power Consumption and Performance Specifications
    • Enables Crank-Ready Designs
    • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range

    MAX17633
    4.5V to 36V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter

    • Reduces External Components and Total Cost
    • Reduces Number of DC-DC Regulators to Stock
    • Reduces Power Dissipation

    MAXM17903
    4.5V to 24V, 300mA Compact Step-Down Power Module

    • Easy to use
    • High Efficiency
    • Flexible Design

    MAXM15064
    4.5V to 60V, 300mA Compact Step-Down Power Module

    • Easy to use
    • High Efficiency
    • Flexible Design

    MAX77680
    3-Output SIMO Buck-Boost Regulator with Power Sequencer and 3μA IQ

    • Single-Inductor, Multiple-Output (SIMO) Extends Battery Life
    • Compact, High-Efficiency Power Solution
    • Small Size

    MAX77681
    3-Output SIMO Buck-Boost Regulator with Power Sequencer and 3μA IQ

    • Single-Inductor, Multiple-Output (SIMO) Extends Battery Life
    • Compact, High-Efficiency Power Solution
    • Small Size

    MAX20416
    2.2MHz Dual-Output, Low-Voltage Step-Down Converters

    • Multiple Functions for Small Size
    • High Precision
    • Robust for the Automotive Environment

    MAX77278
    Ultra-Low Power PMIC with 3-Output SIMO, Power Path Charger Optimized for Small Li+, 425mA Current Sink, and 8 GPIO

    • Highly Integrated
    • Low Power
    • Charger Optimized for Small Battery Size

    MAX20471
    Low-Voltage Synchronous Boost Converter

    • Synchronous Boost Converter
    • 3.0V to 4.0V Operating Supply Voltage
    • True Output Shutdown
  • High Precision
    • ±1.5% Output-Voltage Accuracy
    • 93V ±2% Undervoltage Monitoring
    • 107V ±2% Overvoltage Monitoring
  • Robust for the Automotive Environment
    • Current-Mode Control, Forced-PWM, and Skip Operation
    • Overtemperature and Overcurrent Protection
    • 12-Pin (3mm × 3mm) TDFN

  • MAX20472
    Low-Voltage Synchronous Boost Converter

    • Synchronous Boost Converter
    • 3.0V to 4.0V Operating Supply Voltage
    • True Output Shutdown
  • High Precision
    • ±1.5% Output-Voltage Accuracy
    • 93V ±2% Undervoltage Monitoring
    • 107V ±2% Overvoltage Monitoring
  • Robust for the Automotive Environment
    • Current-Mode Control, Forced-PWM, and Skip Operation
    • Overtemperature and Overcurrent Protection
    • 12-Pin (3mm × 3mm) TDFN

  • MAX20473
    Low-Voltage Synchronous Boost Converter

    • Synchronous Boost Converter
    • 3.0V to 4.0V Operating Supply Voltage
    • True Output Shutdown
  • High Precision
    • ±1.5% Output-Voltage Accuracy
    • 93V ±2% Undervoltage Monitoring
    • 107V ±2% Overvoltage Monitoring
  • Robust for the Automotive Environment
    • Current-Mode Control, Forced-PWM, and Skip Operation
    • Overtemperature and Overcurrent Protection
    • 12-Pin (3mm × 3mm) TDFN

  • MAXM17546
    4.5V to 42V, 5A High-Efficiency, DC-DC Step-Down Power Module with Integrated Inductor

    • Reduces Design Complexity, Manufacturing Risks, and Time-to-Market
    • Saves Board Space in Space-Constrained Applications
    • Offers Flexibility for Power-Design Optimization

    MAX20020
    3.2MHz, 500mA Dual Step-Down Converters for Automotive Cameras

    • Small Solution Size
    • Cable Flexibility
    • EMI Solutions

    MAX20019
    3.2MHz, 500mA Dual Step-Down Converters for Automotive Cameras

    • Small Solution Size
    • Cable Flexibility
    • EMI Solutions

    MAX20034
    High-Efficiency 2.2MHz, 36V, Dual Buck Controller with 17μA Quiescent Current

    • Meets Stringent OEM Module Power-Consumption and Performance Specifications
    • Enables Crank-Ready Designs
    • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range

    MAX77324
    4.8VIN, 1.5A High-Efficiency, Ultra-Small Buck Converter

    • 1.5A Output Current Step-down Converter
    • 2.5V to 4.8V VIN Range
    • 0.6V to 2V Adjustable VOUT Range, ±2% Accuracy

    MAX77714
    Complete System PMIC, Featuring 13 Regulators, 8 GPIOs, RTC, and Flexible Power Sequencing for Multicore Applications

    • Highly Integrated
    • Flexible and Configurable
    • Low Power

    MAX20414
    2.2MHz Sync Boost and Step-Down Converters

    • Multiple Functions for Small Size
    • High-Precision
    • Robust for the Automotive Environment

    MAX20012B
    Automotive Low-Voltage 2-Channel Step-Down Controller

    • 2-Channel High-Efficiency DC-DC Controller in a Small Solution Size
    • High-Precision Regulator for Applications Processors
    • Low-Noise Features Reduce EMI

    MAX20014
    2.2MHz Sync Boost and Dual Step-Down Converters

    • Multiple Functions for Small Size
    • Dual Synchronous Buck Converters Up to 3A: Factory-Configurable Output Voltages from 0.8V to 3.8V in 25mV Steps; Resistor Adjustable
    • High-Precision: ±1.5% Output-Voltage Accuracy; Good Load Transient Performance for Buck Converters

    MAX77752
    Multichannel Integrated Power Management IC

    • Highly Integrated
    • Highly Flexible and Configurable
    • Small Size

    MAX17524
    4.5V to 60V, 3A, Dual-Output, High-Efficiency,Synchronous Step-Down DC-DC Converter

    • Reduces External Components and Total Cost
    • Reduces Number of DC-DC Regulators to Stock
    • Independent Input-Voltage Pins for Each Output