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High-Efficiency Buck-Boost Converter

Industry's Best Transient Response Performance with High-Efficiency Across the Load Range

Product Details

Key Features

Parametric specs for Step-Down/Up Switching Regulators
VIN (V) (min) 2.3
VIN (V) (max) 5.5
VOUT1 (V) (min) 2.6
VOUT1 (V) (max) 5.14
IOUT1 (A) (max) 2
Switch Type Internal
Preset VOUT (V) 3.3
3.4
Output Adjust. Method Preset
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Alternate Topology Step-Down
Step-Up
Switching Frequency (kHz) 2500
Design Tools EE-Sim
Package/Pins WLP/20
Oper. Temp. (°C) -40 to +125
Budgetary
Price (See Notes)
1
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Simplified Block Diagram

Technical Docs

Data Sheet High-Efficiency Buck-Boost Converter Nov 12, 2019

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Parameters

Parametric specs for Step-Down/Up Switching Regulators
VIN (V) (min) 2.3
VIN (V) (max) 5.5
VOUT1 (V) (min) 2.6
VOUT1 (V) (max) 5.14
IOUT1 (A) (max) 2
Switch Type Internal
Preset VOUT (V) 3.3
3.4
Output Adjust. Method Preset
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Alternate Topology Step-Down
Step-Up
Switching Frequency (kHz) 2500
Design Tools generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=5697', '')
Package/Pins WLP/20
Oper. Temp. (°C) -40 to +125
Budgetary
Price (See Notes)
1

Key Features

  • VIN Range: 2.30V to 5.5V
  • VOUT Range: 2.60V to 5.14V (I2C Programmable in 20mV Step)
  • Up to 2A Output Current in Boost Mode (VIN = 3.0V, VOUT = 3.4V, ILIM = High)
  • Up to 3A Output Current in Buck Mode (ILIM = High)
  • Up to 97% Peak Efficiency
  • SKIP Mode for Optimal Light Load Efficiency
  • 55μA (Typ) Low Quiescent Current
  • 3.4MHz High Speed I2C Serial Interface
  • Input Current Limit Selection Pin
  • Power-OK Output
  • 2.5MHz Switching Frequency
  • Protection Features
    • Soft-Start
    • Thermal Shutdown
    • Overvoltage Protection
    • Short Circuit Protection
  • 1.827mm x 2.127mm, 20-Bump WLP

Applications/Uses

  • Single-Cell Li-ion Powered Applications
  • Handheld Scanners, Mobile Payment Terminals, Security Cameras
  • AR/VR Headsets

Description

The MAX77813 is a high-efficiency buck-boost converter targeted for single-cell Li-ion battery powered applications. The device supports an input voltage range from 2.30V to 5.5V with an output voltage range from 2.60V to 5.14V. The device can support up to 2A and 3A of output current in boost and buck modes respectively. The peak efficiency of 97% allows longer operating time.

The device is designed to support seamless transitions between buck and boost modes. A unique control algorithm allows high-efficiency and outstanding performances in line/load transient responses. The I2C-compatible serial interface provides design flexibility to optimize performance along with protection features. The output voltage can be dynamically adjusted for finer control of system power consumption. The device supports two input current limits selected by ILIM logic input.

The MAX77813 is available in a 1.827mm x 2.127mm, 20-bump wafer-level package (WLP).

Simplified Block Diagram

MAX77813: Typical Application Circuit MAX77813: Typical Application Circuit Zoom icon

Technical Docs

Data Sheet High-Efficiency Buck-Boost Converter Nov 12, 2019

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .