MAX17640

PRODUCTION

60V, 400mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters

Industry’s Smallest High-Voltage Synchronous Buck Regulator

Data Sheet (Rev. 2) Product Selection Table
Part Models
6
1ku List Price
Starting From $1.01
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Part Details

  • 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
  • Flexibility to Support Multiple Rails in a System
    • 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 400mA Load Current
    • Configurable Between PFM and Forced-PWM Modes
  • Reduces Power Dissipation
    • 92% Peak Efficiency
    • PFM Feature for High Light-Load Efficiency
    • 2.2µA (typ) Shutdown Current
  • ​Operates Reliably in Adverse Industrial Environments
    • Hiccup-Mode Current Limit and Auto-retry Startup
    • Built-In Output Voltage Monitoring with Open-Drain Active-Low RESET Pin 
    • Programmable EN/UVLO Threshold
    • Monotonic Startup into Prebiased Output
    • Overtemperature Protection
    • Wide -40°C to +125°C Ambient Operating Temperature Range and -40°C to +150°C Junction Temperature Range
    • Complies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions
MAX17640
60V, 400mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters
MAX17640 typical application circuits MAX17640 Block Diagram MAX17640 Circuit Diagram MAX17640 Pin Configuration
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Documentation

Data Sheet 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Internal Power Switch Buck Regulators 2
MAX15062
PRODUCTION 60V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters
MAX17502
PRODUCTION 60V, 1A, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • MAX17640A
  • MAX17640B
  • MAX17640C

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.

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LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

MAX17640AEVKIT

Evaluation Kit for the MAX17640 Converters in Application

Buy Now View Details

Features and Benefits

  • Operates up to 60V Input Supply
  • Fixed 5V, Fixed 3.3V, and Adjustable 12V Application Circuits
  • Up to 400mA Load Current
  • 500kHz Fixed Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Selectable PWM and PFM Modes of Operation
  • Open-Drain Active-Low RESET Output
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR32(EN55032) Class B Conducted and Radiated Emissions

Product Details

The MAX17640A/MAX17640B/MAX17640C evaluation kits (EV kits) provide proven designs to evaluate the performance of the MAX17640A/MAX17640B/MAX17640C high-voltage, high-efficiency, synchronous step-down DC-DC converters. The MAX17640A converter operates over a 5V to 48V input range and can deliver up to 400mA at a fixed 3.3V output. The MAX17640B converter operates over a 7V to 60V input range and can deliver up to 400mA at a fixed 5V output. The MAX17640C converter operates over a 15V to 60V input range and can deliver up to 400mA at an adjustable 12V output.

The EV kits feature an adjustable input undervoltage-lockout, open-drain active-low RESET, overcurrent protection, selectable mode of operation, and thermal shutdown. Refer to the MAX17640 converter data sheet for a complete description of the part that should be read in conjunction with this data sheet before operating these EV kits.

Applications

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

MAX17640BEVKIT

Evaluation Kit for the MAX17640 Converters in Application

Buy Now View Details

Features and Benefits

  • Operates up to 60V Input Supply
  • Fixed 5V, Fixed 3.3V, and Adjustable 12V Application Circuits
  • Up to 400mA Load Current
  • 500kHz Fixed Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Selectable PWM and PFM Modes of Operation
  • Open-Drain Active-Low RESET Output
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR32(EN55032) Class B Conducted and Radiated Emissions

Product Details

The MAX17640A/MAX17640B/MAX17640C evaluation kits (EV kits) provide proven designs to evaluate the performance of the MAX17640A/MAX17640B/MAX17640C high-voltage, high-efficiency, synchronous step-down DC-DC converters. The MAX17640A converter operates over a 5V to 48V input range and can deliver up to 400mA at a fixed 3.3V output. The MAX17640B converter operates over a 7V to 60V input range and can deliver up to 400mA at a fixed 5V output. The MAX17640C converter operates over a 15V to 60V input range and can deliver up to 400mA at an adjustable 12V output.

The EV kits feature an adjustable input undervoltage-lockout, open-drain active-low RESET, overcurrent protection, selectable mode of operation, and thermal shutdown. Refer to the MAX17640 converter data sheet for a complete description of the part that should be read in conjunction with this data sheet before operating these EV kits.

Applications

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

MAX17640C12EVKIT

Evaluation Kit for the MAX17640 Converters in Application

Buy Now View Details

Features and Benefits

  • Operates up to 60V Input Supply
  • Fixed 5V, Fixed 3.3V, and Adjustable 12V Application Circuits
  • Up to 400mA Load Current
  • 500kHz Fixed Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Selectable PWM and PFM Modes of Operation
  • Open-Drain Active-Low RESET Output
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR32(EN55032) Class B Conducted and Radiated Emissions

Product Details

The MAX17640A/MAX17640B/MAX17640C evaluation kits (EV kits) provide proven designs to evaluate the performance of the MAX17640A/MAX17640B/MAX17640C high-voltage, high-efficiency, synchronous step-down DC-DC converters. The MAX17640A converter operates over a 5V to 48V input range and can deliver up to 400mA at a fixed 3.3V output. The MAX17640B converter operates over a 7V to 60V input range and can deliver up to 400mA at a fixed 5V output. The MAX17640C converter operates over a 15V to 60V input range and can deliver up to 400mA at an adjustable 12V output.

The EV kits feature an adjustable input undervoltage-lockout, open-drain active-low RESET, overcurrent protection, selectable mode of operation, and thermal shutdown. Refer to the MAX17640 converter data sheet for a complete description of the part that should be read in conjunction with this data sheet before operating these EV kits.

Applications

  • 4–20mA Current Loops
  • General Purpose Point-of-Load
  • High-Voltage LDO Replacement
  • HVAC and Building Control
  • Industrial Sensors
MAX17640AEVKIT
Evaluation Kit for the MAX17640 Converters in Application
MAX17640BEVKIT
Evaluation Kit for the MAX17640 Converters in Application
MAX17640C12EVKIT
Evaluation Kit for the MAX17640 Converters in Application

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