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MAX15062

MAX15062

60V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters

Industry’s Smallest High-Voltage Synchronous Buck Regulator

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Overview

Description

The MAX15062 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input voltage range. The converter delivers output current up to 300mA at 3.3V (MAX15062A), 5V (MAX15062B), and adjustable output voltages (MAX15062C). The device operates over the -40°C to +125°C temperature range and is available in a compact 8-pin (2mm × 2mm) TDFN package. Simulation models are available.

The device employs a peak-current-mode control architecture with a MODE pin that can be used to operate the device in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes. PWM operation provides constant frequency operation at all loads and is useful in applications sensitive to variable switching frequency. PFM operation disables negative inductor current and additionally skips pulses at light loads for high efficiency. The low-resistance on-chip MOSFETs ensure high efficiency at full load and simplify the PCB layout.

To reduce input inrush current, the device offers an internal soft-start. The device also incorporates an EN/UVLO pin that allows the user to turn on the part at the desired input-voltage level. An open-drain active-low RESET pin can be used for output-voltage monitoring.

MAX15062: Typical Operating Circuit MAX15062: Typical Operating Circuit Enlarge+

Key Features

  • Eliminates External Components and Reduces Total Cost
    • No Schottky—Synchronous Operation for High Efficiency and Reduced Cost
    • Internal Compensation
    • Internal Feedback Divider for Fixed 3.3V, 5V Output Voltages
    • Internal Soft-Start
    • All-Ceramic Capacitors, Ultra-Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input Voltage Range
    • Fixed 3.3V and 5V Output Voltage Options
    • Adjustable 0.9V to 0.89 x VIN Output Voltage Option
    • Delivers Up to 300mA Load Current
    • Configurable Between PFM and Forced-PWM Modes
  • Reduces Power Dissipation
    • Peak Efficiency = 92%
    • PFM Feature for High Light-Load Efficiency
    • Shutdown Current = 2.2µA (typ)
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup-Mode Current Limit and Autoretry Startup
    • Built-In Output Voltage Monitoring with Open-Drain Active-Low RESET Pin
    • Programmable EN/UVLO Threshold
    • Monotonic Startup into Prebiased Output
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range

Applications/Uses

  • 4–20mA Current Loops
  • General-Purpose Point-of-Load
  • High-Voltage LDO Replacement
  • HVAC and Building Control
  • Industrial Sensors
  • Process Control

Parametric Specs

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Preset VOUT
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)		Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX15062 4.5600.953
3.3
5
Preset
Resistor
0.3InternalYesYes1500EE-Sim
TDFN/8
$1.10 @1k
See All Step-Down Switching Regulators (404)
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


MAX15062AEVKIT: Evaluation Kit for the MAX15062A
MAX15062BEVKIT: Evaluation Kit for the MAX15062B
MAX15062C12EVKIT: Evaluation Kit for the MAX15062C
MAX15062C5EVKITE: Evaluation Kit for the MAX15062 in 5V Output-Voltage Application

Technical Documents

App Note 6728 Addressing Power Supply Challenges for After-Market Electronics and Infrastructure
App Note 6613 Highly Efficient Power-Management Architectures for Aftermarket Transportation Electronics
User Guide 6424 MAXREFDES145# 8-Channel IO-Link Master Quick Start Guide
User Guide 6207 MAXREFDES46# Quickstart Guide
User Guide 6080 MAXREFDES79# IO-Link Master Quick Start Guide
User Guide 6041 MAXREFDES42# IO-Link RTD Temp Sensor Quick Start Guide (IQ2 IO-Link Master Version)
User Guide 5861 EE-SIM Design and Simulation Environment User Guide
System Board 5815 Palo Verde (MAXREFDES33#): Step-Down Converter

Quality and Environmental Data

Product Reliability Reports: MAX15062.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • EE-Sim: Design & Simulate MAX15062

    • 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 >

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