MAX77801

5.5V Input, 2A, High-Efficiency Buck-Boost Converter

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-efficiency, step-up/step-down (buck-boost) converter targeted for single-cell, Li-ion battery-powered applications. The device maintains a regulated output voltage from 2.6V to 4.18V across an input voltage range of 2.3V to 5.5V. The device supports up to 2A of output current in boost mode and up to 3A in buck mode.

The device seamlessly transitions between buck and boost modes. A unique control algorithm allows high-efficiency and outstanding load and line-transient response. Dedicated enable and power-OK pins allow simple hardware control. An I2C serial interface is optionally used for dynamic voltage scaling, system power optimization, and fault read-back.

The MAX77801 is available in a 20-bump, 1.83mm x 2.13mm wafer-level package (WLP) and also 20-pin, 4mm x 4mm TQFN.

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

Key Features

  • VIN Range: 2.30V to 5.5V
  • VOUT Range: 2.60V to 4.18V (I2C Programmable in 12.5mV Steps)
  • Up to 2A Output Current in Boost Mode (VIN= 3.0V, VOUT = 3.4V)
  • Up to 3A Output Current in Buck Mode
  • Up to 97% Peak Efficiency
  • SKIP Mode for Optimal Light Load Efficiency
  • 55µA (typ) Low Quiescent Current
  • 3.4MHz High-Speed I2C Serial Interface
  • Dynamic Voltage Scaling (DVS) Function
  • Power-OK Output
  • 2.5MHz Switching Frequency
  • Protection Features
    • Soft-Start
    • Thermal Shutdown
    • Overvoltage Protection
    • Overcurrent Protection
  • 1.827mm x 2.127mm, 20-Bump WLP
  • 4mm x 4mm, 20-Pin TQFN

Applications/Uses

  • AR/VR Headsets
  • Handheld Scanners, Mobile Payment Terminals, Security Cameras
  • Single-Cell, Li-Ion Battery-Powered Devices

See parametric specs for Step-Down/Up Switching Regulators (31)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
IOUT1
(A)
Switch TypeOper. Freq.
(kHz)
FeaturesDesign ToolsPackage/PinsOper. Temp.
(°C)
Budgetary
Price
minmaxminmaxmaxSee Notes
MAX77801 2.35.52.64.18752Internal2500Fixed Freq./PWMEE-Sim
TQFN-CU/20
WLP/20
-40 to +85$1.10 @1k

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

Tools & Models

  • EE-Sim: Design & Simulate MAX77801
  • MAX77801 SIMPLIS Schematic
  • Product Reliability Reports: MAX77801.pdf 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    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 >

     
    Status:
    Package:
    Temperature:

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