MAX77533

RECOMMENDED FOR NEW DESIGNS

14V Input, 1.5A High-Efficiency Buck Converter with 9μA I_SUP

Save Power and Board Space with Small Solution Size

Data Sheet (Rev. 3) Product Selection Table

Part Models: 8
1ku List Price: Starting From $0.48

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Overview

1.5A Single Channel Buck Regulator
3V to 14V Input Voltage Range
Output Voltage Range
- 0.8V to 5V I²C Programmable in 50mV Steps Internal Feedback
- 1.2V, 1.8V, or 3.3V Factory Preset Options Internal Feedback
- 0.8V to 99%V_SUP with External Feedback Resistors
High-Efficiency, Low Supply Current Extends Battery Life
- 94% Peak Efficiency at 7.4V_SUP, 3.3V_OUT (2520 Inductor)
- 9μA I_SUP (12V_SUP, 1.8V_OUT Internal Feedback Version)
- Selectable Light-Load SKIP and Forced-PWM Modes
1MHz or 550kHz Fixed-Frequency Switching
Hardware or Software Control
- Enable Input and Power-OK Output Pins
- Optional I²C Full Control Interface
Protection Features
- Cycle-by-Cycle Inductor Peak Current Limit
- Short-Circuit Hiccup Mode, UVLO, and Thermal Shutdown Protections
- 1ms Default Soft-Start
Small Size
- 1.85mm x 1.4mm (0.7mm max. height) WLP
- 12-Bump, 0.4mm Pitch, 3 x 4 Array

The MAX77533 is a synchronous 1.5A step-down DC-DC converter optimized for portable 2-cell and 3-cell battery-operated and USB-C applications. The converter operates on an input supply between 3V and 14V. Output voltage is adjustable between 0.8V and 5V in 50mV steps through an I²C serial interface (internal feedback) or 0.8V to 99% of the supply voltage with external feedback resistors. Factory-programmed default voltages of 1.2V, 1.8V, and 3.3V with internal feedback are offered to reduce component count for common rails. The device features a low-I_Q SKIP mode which allows excellent efficiency at light loads.

Dedicated enable and power-OK (POK) pins allow simple hardware control. An I²C serial interface is optionally used for full configuration and control for dynamic voltage scaling and system power optimization.

Built-in undervoltage lockout (UVLO), output active discharge, cycle-by-cycle current limit, thermal shutdown, and short-circuit protection ensure safe operation under abnormal operating conditions.

The MAX77533 is available in a 12-bump, 0.4mm pitch wafer-level package (WLP).

Applications

2-cell/3-cell High Power Density Supplies
Drones, HD Cameras, and Notebook Computers
Portable Li+/Li-ion Battery Powered Devices
Space-Constrained Portable Electronics

Part Models: 8
1ku List Price: Starting From $0.48

Documentation

Data Sheet 1

MAX77533: 14V Input, 1.5A High-Efficiency Buck Converter with 9μA I_SUP Data Sheet (Rev.3) 06/01/2021

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
MAX77533AEWC+	Wafer-Level Package 4x3 Bump, Full Array	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX77533AEWC+T	Wafer-Level Package 4x3 Bump, Full Array	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX77533BEWC12+	Wafer-Level Package 4x3 Bump, Full Array	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX77533BEWC12+T	Wafer-Level Package 4x3 Bump, Full Array	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX77533BEWC33+	Wafer-Level Package 4x3 Bump, Full Array	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX77533BEWC33+T	Wafer-Level Package 4x3 Bump, Full Array	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX77533QEWC+	Wafer-Level Package 4x3 Bump, Full Array	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX77533QEWC+T	Wafer-Level Package 4x3 Bump, Full Array	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 21, 2025 - 2452N ASSEMBLY
		pcn_2452n
MAX77533AEWC+	PRODUCTION
MAX77533AEWC+T	PRODUCTION
MAX77533BEWC33+	PRODUCTION
MAX77533BEWC33+T	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Tools & Simulations

Software Development 1

MAX77533 Evaluation Kit Software, 1.0.0

EE-Sim Power® Tools 1

The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.

Start EE-Sim Now

Evaluation Kits

Evaluation Kit for the MAX77533

Buy Now View Details

Features and Benefits

Proven PCB Reference Design and Layout
Easy to Use
- Simple Hardware Control: Jumpers and Test Points for EN, BIASEN, and POK
- GUI Drives I²C Interface for Optional Software Control
- Fully Assembled and Tested
USB to I²C Converter Allows for Easy Communication
- Windows-Based Software GUI Controls Registers
- Level Translator (MAX3395) Allows for Adjusting I²C Bus Voltage from 1.8V to 3.3V
On-Board Electronic Load Emulates System Loading
- Steady-State, Transient, and Random Modes

Product Details

The MAX77533 evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the MAX77533 synchronous step-down (buck) converter. The EV kit is a step-down voltage regulator circuit using MAX77533 that is capable of 3V to 14V input, 1.5A continuous load, and output voltage adjustable between 0.8V and 5V (internal feedback options) or 1.55V and 99% of the input voltage (external feedback option).

The EV kit features a dual-range electronic load that allows easy evaluation of loading use cases for the buck converter circuit. Steady-state, transient, or random load profiles can be programmed.

A USB-to-I²C translator circuit allows a Windows^®-based PC to run a graphical user interface (GUI) for easy control of the MAX77533 registers as well as the on-board electronic load.

Evaluation Kit for the MAX77533

Buy Now View Details

Features and Benefits

Proven PCB Reference Design and Layout
Easy to Use
- Simple Hardware Control: Jumpers and Test Points for EN, BIASEN, and POK
- GUI Drives I²C Interface for Optional Software Control
- Fully Assembled and Tested
USB to I²C Converter Allows for Easy Communication
- Windows-Based Software GUI Controls Registers
- Level Translator (MAX3395) Allows for Adjusting I²C Bus Voltage from 1.8V to 3.3V
On-Board Electronic Load Emulates System Loading
- Steady-State, Transient, and Random Modes

Product Details

The EV kit features a dual-range electronic load that allows easy evaluation of loading use cases for the buck converter circuit. Steady-state, transient, or random load profiles can be programmed.

A USB-to-I²C translator circuit allows a Windows^®-based PC to run a graphical user interface (GUI) for easy control of the MAX77533 registers as well as the on-board electronic load.

Evaluation Kit for the MAX77533

Buy Now View Details

Features and Benefits

Proven PCB Reference Design and Layout
Easy to Use
- Simple Hardware Control: Jumpers and Test Points for EN, BIASEN, and POK
- GUI Drives I²C Interface for Optional Software Control
- Fully Assembled and Tested
USB to I²C Converter Allows for Easy Communication
- Windows-Based Software GUI Controls Registers
- Level Translator (MAX3395) Allows for Adjusting I²C Bus Voltage from 1.8V to 3.3V
On-Board Electronic Load Emulates System Loading
- Steady-State, Transient, and Random Modes

Product Details

The EV kit features a dual-range electronic load that allows easy evaluation of loading use cases for the buck converter circuit. Steady-state, transient, or random load profiles can be programmed.

A USB-to-I²C translator circuit allows a Windows^®-based PC to run a graphical user interface (GUI) for easy control of the MAX77533 registers as well as the on-board electronic load.

Evaluation Kit for the MAX77533

Buy Now View Details

Features and Benefits

Proven PCB Reference Design and Layout
Easy to Use
- Simple Hardware Control: Jumpers and Test Points for EN, BIASEN, and POK
- GUI Drives I²C Interface for Optional Software Control
- Fully Assembled and Tested
USB to I²C Converter Allows for Easy Communication
- Windows-Based Software GUI Controls Registers
- Level Translator (MAX3395) Allows for Adjusting I²C Bus Voltage from 1.8V to 3.3V
On-Board Electronic Load Emulates System Loading
- Steady-State, Transient, and Random Modes

Product Details

The EV kit features a dual-range electronic load that allows easy evaluation of loading use cases for the buck converter circuit. Steady-state, transient, or random load profiles can be programmed.

A USB-to-I²C translator circuit allows a Windows^®-based PC to run a graphical user interface (GUI) for easy control of the MAX77533 registers as well as the on-board electronic load.

Latest Discussions

1 Years Ago

Overview

Documentation

Data Sheet 1

Software Resources

Can't find the software or driver you need?

Tools & Simulations

Software Development 1

EE-Sim Power® Tools 1

Evaluation Kits

Features and Benefits

Product Details

Features and Benefits

Product Details

Features and Benefits

Product Details

Features and Benefits

Product Details

Latest Discussions

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