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MAX77816

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High-Efficiency Buck-Boost Regulator with 5A Switches

98% Efficiency Buck Boost with I²C Interface Delivering >3A of Continuous Output Current

Printable Data Sheet

Product Details

See parametric specs for Step-Down/Up Switching Regulators

Key Features

See parametric specs for Step-Down/Up Switching Regulators

Parametric specs for Step-Down/Up Switching Regulators

V_IN (V) (min)	2.3
V_IN (V) (max)	5.5
V_OUT1 (V) (min)	2.6
V_OUT1 (V) (max)	5.14
I_OUT1 (A) (max)	3
Switch Type	Internal
Preset V_OUT (V)	3.4
V_OUT1 Tolerance (±%)	1
Output Adjust. Method	Preset
Synchronous Switching?	Yes
Power Good Signal	Yes
I_CC (mA) (max)	5
# 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 +85
Budgetary Price (See Notes)	1.17

See parametric specs for Step-Down/Up Switching Regulators

View Less

Simplified Block Diagram

Similar products you might be interested in

Exact equivalent in functionality and parametrics to the compared device:

Part No.	Description
MAX77813	High-Efficiency Buck-Boost Converter
MAX77801	5.5V Input, 2A, High-Efficiency Buck-Boost Converter
MAX8625	High-Efficiency, Seamless Transition, Step-Up/Down DC-DC Converter

Technical Docs

Data Sheet

High-Efficiency Buck-Boost Regulator with 5A Switches

Jul 15, 2020

Design & Development

Click any title below to view the detail page where available.

Hardware Development

Evaluation Board

MAX77816EVKIT

$73.14

Description/Applications

The MAX77816 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) for evaluating the IC. The IC is a high-current, high-efficiency buck-boost regulator targeting single-cell Li-ion battery-powered applications. It supports a wide output voltage range from 2.60V to 5.14V. The IC allows 5A (typ) maximum switch current. In buck mode, the output current can go as high as 4A, and in boost mode, the maximum output current can be 3A. A unique control algorithm allows highefficiency, outstanding line/load transient response, and seamless transition between buck and boost modes.

The IC features I²C-compatible serial interface. The I²C interface allows the output voltage to be dynamically adjusted thus enabling finer control of system power consumption. The I²C interface also provides features such as enable control and device status monitoring.

The multifunction GPIO pin is register settable to five different options such as FPWM mode enable and inductor peak current-limit selection. These options provide design flexibility that allows the IC to cover a wide range of applications and use cases.

The Maxim Command Module (MINIQUSB) can be used to enable USB-to-I²C communication between a Windows®-compatible PC and the EV kit. The EV kit software provides a Windows-based graphical user interface (GUI) to exercise the various features of the IC.

View Details

Features

Buck and Boost Operation Including Seamless Transition between Buck and Boost Modes
- 2.3V to 5.5V V_IN Range
- 2.60V to 5.14V V_OUT with 20mV Step
- 3A Minimum Continuous Output Current (V_INBB ≥ 3.0V, V_OUTBB = 3.3V)
- Burst Current: 3.6A Minimum Output Current for 800µs (V_INBB ≥ 3.0V, V_OUTBB = 3.3V)
I²C Serial Interface Allows Dynamic V_OUT Adjustment and Provides Design Flexibility
97.5% Peak Efficiency
40μA Quiescent Current
Safety Features Enhance Device and System Reliability
- Soft-Start
- True Shutdown™
- Thermal Shutdown and Short-Circuit Protection
Multifunction GPIO Pin
- MAX77816A: FPWM Mode Enable
- MAX77816B: Inductor Peak Current-Limit Selection
- MAX77816C: Output Voltage Selection
- MAX77816D: Power-OK Indicator
- MAX77816E: Interrupt Indicator
Small Size: 1.827mm x 2.127mm, 20-Bump WLP, 0.4mm Pitch

SYSTEM BOARD

MAXREFDES1214: Portable 1.5A USB Charger with Micro-USB Input and USB Standard-A Output

Additional Resources

Design Solution: Boost the Run-Time of Portable Electronics with a One-Two Punch ›

How to Achieve a Noninverting Output with a 4-Switch Buck-Boost Converter

Advantages of Using the MAX77816 Buck-Boost Regulator for Seamless Power Supply Transitions

Essential Analog Toolkit: Buck-Boost Regulators

Evaluation Board

MAX77816EVKIT

Data Sheet

$73.14

Description/Applications

View Details

Features

Buck and Boost Operation Including Seamless Transition between Buck and Boost Modes
- 2.3V to 5.5V V_IN Range
- 2.60V to 5.14V V_OUT with 20mV Step
- 3A Minimum Continuous Output Current (V_INBB ≥ 3.0V, V_OUTBB = 3.3V)
- Burst Current: 3.6A Minimum Output Current for 800µs (V_INBB ≥ 3.0V, V_OUTBB = 3.3V)
I²C Serial Interface Allows Dynamic V_OUT Adjustment and Provides Design Flexibility
97.5% Peak Efficiency
40μA Quiescent Current
Safety Features Enhance Device and System Reliability
- Soft-Start
- True Shutdown™
- Thermal Shutdown and Short-Circuit Protection
Multifunction GPIO Pin
- MAX77816A: FPWM Mode Enable
- MAX77816B: Inductor Peak Current-Limit Selection
- MAX77816C: Output Voltage Selection
- MAX77816D: Power-OK Indicator
- MAX77816E: Interrupt Indicator
Small Size: 1.827mm x 2.127mm, 20-Bump WLP, 0.4mm Pitch

SYSTEM BOARD

MAXREFDES1214: Portable 1.5A USB Charger with Micro-USB Input and USB Standard-A Output

Design Solution: Boost the Run-Time of Portable Electronics with a One-Two Punch ›

How to Achieve a Noninverting Output with a 4-Switch Buck-Boost Converter

Advantages of Using the MAX77816 Buck-Boost Regulator for Seamless Power Supply Transitions

Essential Analog Toolkit: Buck-Boost Regulators

Tools & Models

EE-Sim: Design & Simulate MAX77816

Create Design

SIMULATION MODELS

MAX77816 SIMPLIS Schematic

Free OASIS Simulator (SIMPLIS and SPICE)

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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 .

Parameters

Parametric specs for Step-Down/Up Switching Regulators

V_IN (V) (min)	2.3
V_IN (V) (max)	5.5
V_OUT1 (V) (min)	2.6
V_OUT1 (V) (max)	5.14
I_OUT1 (A) (max)	3
Switch Type	Internal
Preset V_OUT (V)	3.4
V_OUT1 Tolerance (±%)	1
Output Adjust. Method	Preset
Synchronous Switching?	Yes
Power Good Signal	Yes
I_CC (mA) (max)	5
# 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=8135', '')
Package/Pins	WLP/20
Oper. Temp. (°C)	-40 to +85
Budgetary Price (See Notes)	1.17

See parametric specs for Step-Down/Up Switching Regulators

Key Features

Buck and Boost Operation Including Seamless Transition between Buck and Boost Modes
- 2.3V to 5.5V V_IN Range
- 2.60V to 5.14V V_OUT with 20mV Step
- 3A Minimum Continuous Output Current (V_INBB ≥ 3.0V, V_OUTBB = 3.3V)
- Burst Current: 3.6A Minimum Output Current for 800μs (V_INBB ≥ 3.0V, V_OUTBB = 3.3V)
I²C Serial Interface Allows Dynamic V_OUT Adjustment and Provides Design Flexibility
97.5% Peak Efficiency
40µA Quiescent Current
Safety Features Enhance Device and System Reliability
- Soft-Start
- True Shutdown^™
- Thermal Shutdown and Short-Circuit Protection
Multifunction GPIO Pin
- MAX77816A/F: FPWM Mode Enable
- MAX77816B: Inductor Peak Current-Limit selection
- MAX77816C: Output Voltage Selection
- MAX77816D: Power-OK indicator
- MAX77816E: Interrupt Indicator
Small Size: 1.827mm × 2.127mm, 20-Bump WLP, 0.4mm Pitch

Applications/Uses

Battery-Powered Applications
RF Power Amplifiers
Smartphones and Tablets
Wearable Devices
Wireless Communication Devices

Description

The MAX77816 is a high-current, high-efficiency buck-boost regulator targeting single-cell Li-ion battery-powered applications. It supports a wide output voltage range from 2.60V to 5.14V. The IC allows 5A (TYP) maximum switch current. In buck mode, the output current can go as high as 4A, and in boost mode, the maximum output current can be 3A. A unique control algorithm allows high efficiency, outstanding line/load transient response, and seamless transition between buck and boost modes.

The multifunction GPIO pin is register settable to 5 different options such as FPWM mode enable and inductor peak current level selection. These options provide design flexibility that allows the IC to cover a wide range of applications and use cases.

Design Solution: Boost the Run-Time of Portable Electronics with a One-Two Punch ›

Simplified Block Diagram

MAX77816: Typical Application Circuit

Technical Docs

Data Sheet

High-Efficiency Buck-Boost Regulator with 5A Switches

Jul 15, 2020

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 .

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INTERACTIVE Data Sheet

MAX77816

High-Efficiency Buck-Boost Regulator with 5A Switches

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

Similar products you might be interested in

Technical Docs

Design & Development

EE-Sim: Design & Simulate MAX77816

MAX77816 SIMPLIS Schematic

EE-Sim: Design & Simulate MAX77816

MAX77816 SIMPLIS Schematic

Support & Training

Parameters

Key Features

Applications/Uses

Description

Simplified Block Diagram

Technical Docs

Support & Training

MAX77816 Related Videos