›

MAX5073

2.2MHz, Dual-Output Buck or Boost Converter with Internal Power MOSFETs

Please check latest availability status for a specific part variant.

Overview

Description

The MAX5073 is a dual-output DC-DC converter with integrated high-side n-channel power MOSFETs. Each output can be configured either as a buck converter or a boost converter. The device is capable of operating from a wide 5.5V to 23V input voltage range. Each output is programmable down to 0.8V in the buck mode and up to 28V in the boost mode with an output voltage accuracy of ±1%. In the buck mode, converter 1 and converter 2 can deliver 2A and 1A, respectively. The output switching frequency of each converter can be programmed from 200kHz to 2.2MHz to avoid harmonics in a radio power supply or to reduce the size of the power supply. Each output operates 180° out-of-phase thus reducing input-capacitor ripple current, size, and cost. A SYNC input facilitates external frequency synchronization. Moreover, a CLKOUT output provides out-of-phase clock signal with respect to converter 2, allowing four-phase operation using two MAX5073 ICs in master-slave configuration.

The MAX5073 includes an internal digital soft-start that reduces inrush current, eliminates output-voltage overshoot, and ensures monotonic rise in output voltage during power-up. The device includes individual shutdown and a power-good output for each converter. Protection features include output short-circuit protection for buck mode and maximum duty-cycle limit for boost operation, as well as thermal shutdown.

The MAX5073 is available in a thermally enhanced 28-pin thin QFN package that can dissipate 2.7W at +70°C ambient temperature. The device is rated for operation over the -40°C to +85°C extended, or -40°C to +125°C automotive operating temperature range.

MAX5073: Functional Diagram

Enlarge+

Key Features

4.5V to 5.5V or 5.5V to 23V Input Supply Voltage Range
0.8V (Buck) to 28V (Boost) Output Voltage
Two Independent Output DC-DC Converters with Internal Power MOSFETs
Each Output can be Configured in Buck or Boost Mode
I_OUT1 and I_OUT2 of 2A and 1A (Respectively) in Buck Mode
180° Out-of-Phase Operation
Clock Output for Four Phase Operation
Switching Frequency Programmable from 200kHz to 2.2MHz
Digital Soft-Start and Sync Input
Individual Converter Shutdown and Power-Good Output
Short-Circuit Protection (Buck)/Maximum Duty-Cycle Limit (Boost)
Thermal Shutdown
Thermally Enhanced 28-Pin Thin QFN Package Dissipates up to 2.7W at +70°C

Applications/Uses

Networking Line Cards
Point-of-Load DC-DC Converters
Power-Over-Ethernet Postregulation for PDs
Telecom Line Cards

Parametric Specs

Part Number

V_IN
(V)

V_OUT1
(V)

Output Adjust. Method

I_OUT1
(A)

Switch Type

Power Good Signal

I_CC
(mA)

DC-DC Outputs

Oper. Freq.
(kHz)

Package/Pins

Budgetary
Price

min

max

min

max

typ

See Notes

MAX5073

5.5

0.8

Resistor

Internal

Yes

2.2

2200

TQFN/28

$3.11 @1k

See All Step-Down Switching Regulators (380)

Part Number

Package/Pins

MAX5073

See Data Sheet

See All Step-Up Switching Regulators (95)

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.

Design Resources

Quality And Environmental

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 >

Order

Status:

Package:

Temperature:

Related Resources

New Products

MAXM17536
4.5V to 60V, 4A High-Efficiency, DC-DC Step-Down SiP 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

MAX17576
4.5V to 60V, 4A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

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

MAX20412
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

MAX20343
Ultra-Low Quiescent Current, Low Noise 3.5W Buck-Boost Regulator

Extend System Run Time
Low, Continuous Noise Profile
Adaptable Load Transient Response

MAX20004E
36V, 220kHz to 2.2MHz, 4A/6A/8A Fully Integrated Automotive Step-Down Converters

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

MAX20006E
36V, 220kHz to 2.2MHz, 4A/6A/8A Fully Integrated Automotive Step-Down Converters

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

MAX20008E
36V, 220kHz to 2.2MHz, 4A/6A/8A Fully Integrated Automotive Step-Down Converters

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

MAX17630
4.5V to 36V, 1A, 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

MAX20011
Automotive Single 8A/12A Step-Down Converter with High Efficiency

High-Efficiency DC-DC Converter
Up to 12A peak output current:
Differential Remote Voltage Sensing

MAX15158Z
High-Voltage Multiphase Boost Controller

Wide Operating Range
Integration Reduces Design Footprint
Robust Fault Protection Improves Quality and Reliability

MAX20079
Automotive 36V 3.5A Buck Converter with 3.5μA I_Q

Synchronous DC-DC Converter with Integrated FETs
Small Solution Size Saves Space
PGOOD Output and High-Voltage EN Input Simplify Power Sequencing

MAX20026, MAX20026S
Automotive Quad, Low-Voltage Step-Down DC-DC Converters with Low-Noise LDO

High-Integration Shrinks Solution Size
Performance Designed for Automotive Point-of-Load Regulation
Low-Noise Features Improve EMI Performance

MAX20026S
Automotive Quad, Low-Voltage Step-Down DC-DC Converters with Low-Noise LDO

High-Integration Shrinks Solution Size
Performance Designed for Automotive Point-of-Load Regulation
Low-Noise Features Improve EMI Performance

MAX20801
MPP Tracking DC-DC Converter

Performs MPPT on 20-24 Series Connected PV Cells
Fast MPPT Reacts Quickly to Changing Conditions
Integrated Voltage-Limiting Clamps Output Voltage

MAX20800
MPP Tracking DC-DC Converter

Performs MPPT on 20-24 Series Connected PV Cells
Fast MPPT Reacts Quickly to Changing Conditions
Integrated Voltage-Limiting Clamps Output Voltage

MAX20059
72V, 1A, Automotive Synchronous Step-Down DC-DC Converter

Synchronous DC-DC Converters with Integrated FETs
Flexibility
Active-Low RESET Output and EN Input (26V max) Simplify Power Sequencing

MAX20058
60V, 1A, Automotive Synchronous Step-Down DC-DC Converter

Synchronous DC-DC Converters with Integrated FETs
Flexibility
Active-Low RESET Output and EN Input (26V max) Simplify Power Sequencing

MAXM15067
4.5V to 60V, 300mA Step-Down uSLIC Power Module

Easy to Use
High Efficiency
Flexible Design

MAXM15065
4.5V to 60V, 300mA Step-Down uSLIC Power Module

Easy to Use
High Efficiency
Flexible Design

MAXM15066
4.5V to 60V, 300mA Step-Down uSLIC Power Module

Easy to Use
High Efficiency
Flexible Design

MAXM17904
4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

Easy to Use
High Efficiency
Flexible Design

MAXM17905
4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

Easy to Use
High Efficiency
Flexible Design

MAXM17906
4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

Easy to Use
High Efficiency
Flexible Design

MAX20010C
Automotive Single 6A Step-Down Converters

Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
High-Precision Voltage Regulator for Applications Processors
Low-Noise Feature Reduces EMI

MAX20010D
Automotive Single 6A Step-Down Converters

Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
High-Precision Voltage Regulator for Applications Processors
Low-Noise Feature Reduces EMI

MAX20048
Automotive 40V, 55µA I_Q, 2.2MHz, H-Bridge Buck-Boost Controller

Meets Stringent Automotive Quality and Reliability Requirements
Efficient Solution in a Small Solutions Size
Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements

MAX20040
Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

Meets Stringent Automotive Quality and Reliability Requirements
Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D version only)
High Switching Frequency Allows Use of Small External Components

MAX20039
Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

Meets Stringent Automotive Quality and Reliability Requirements
Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D version only)
High Switching Frequency Allows Use of Small External Components

MAX20029B
Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

Quad Step-Down DC-DC Converters with Integrated FETs
Operate from 3.0V to 5.5V Supply Voltage
1.0V to 4.0V Fixed or Adjustable Output Voltage

MAX20029C
Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

Quad Step-Down DC-DC Converters with Integrated FETs
Operate from 3.0V to 5.5V Supply Voltage
1.0V to 4.0V Fixed or Adjustable Output Voltage

MAX20029, MAX20029B, MAX20029C
Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

Quad Step-Down DC-DC Converters with Integrated FETs
Operate from 3.0V to 5.5V Supply Voltage
1.0V to 4.0V Fixed or Adjustable Output Voltage

MAX77827
5.5V Input, 1.8A/3.1A Switch Buck-Boost Converter with 6μA I_Q

1.8V to 5.5V Input Voltage Range
2.3V to 5.3V Single Resistor Adjustable Output Voltage
1.6A Maximum Output Current (3.1A I_LIM Option, Buck Mode)

Related Packaging

Technical Docs

Type	ID	Title
Reference Schematic	4152	Reference Design for the MAX5073 Dual Buck Converter Operating at a Switching Frequency of 2MHz
App Note	3893	High-Frequency Automotive Power Supplies
App Note	3665	External Component Calculator for Setting up a Buck or Boost Converter with the MAX5072/MAX5073