MAX20077
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MAX20077

36V, 2.5A Mini Buck Converter with 3.5uA IQ

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Best-in-Class Ultra-Low IQ Mini Buck Ideal for Automotive Applications

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SIMPLIS Models MAX20077 SIMPLIS Schematic Download 489.73KB
Part Models 16
1ku List Price Starting From $1.46
Features
  • Synchronous DC-DC Converter with Integrated FETs
    • MAX20077ATCA/VY+/B/D/E = 2.5A IOUT
    • MAX20077ATCC/VY+ = 2.0A IOUT
    • 3.5μA Quiescent Current when in Standby Mode
  • Small Solution Size Saves Space
    • 20ns Minimum On-Time
    • 2.1MHz or 400kHz Operating Frequency
    • Programmable 1V to 10V Output Voltages, or Fixed 5V/3.3V Options Available
    • Fixed 3.5ms Internal Soft-Start
    • Fixed Output Voltage with ±2% Output Accuracy in FPWM mode (5V/3.3V), or Externally Resistor Adjustable (1V to 10V) with ±1.5% FB Accuracy
    • Innovative Current-Mode-Control Architecture Minimizes Total Board Space and BOM Count
  • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing
  • Protection Features and Operating Range Ideal for Automotive Applications
    • 3.5V to 36V Operating VIN Range
    • 40V Load-Dump Protection
    • 99% Duty-Cycle Operation with Low Dropout
    • -40°C to +125°C Automotive Temperature Range
    • AEC-Q100 Qualified
Additional Details
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The MAX20077/MAX25277 is a small, synchronous buck converter with integrated high-side and low-side switches. The device is designed to deliver up to 2.5A (2.0A for the MAX20077ATCC/VY+ variant) with 3.5V to 36V input voltages while using only 3.5μA quiescent current at no load.

The device provides an accurate output voltage of ±2% in FPWM mode within the normal 6V to 18V operation input range. With 20ns minimum on-time capability, the converter is capable of large input-to-output conversion ratios. Voltage quality can be monitored by observing the PGOOD signal. The device can operate in dropout by running at 99% duty cycle, making it ideal for automotive and industrial applications. The device offers two fixed 5V and 3.3V output voltages. In addition, the device can be configured for 1V to 10V output voltages using an external resistor-divider. Frequency is internally fixed at 2.1MHz, which allows for small external components and reduced output ripple, and guarantees no AM interference. A 400kHz option is also offered to provide minimum switching losses and maximum efficiency. The device automatically enters skip mode at light loads with ultra-low 3.5μA quiescent current at no load. The device offers pin-enabled spread-spectrum frequency modulation designed to minimize EMI-radiated emissions due to the modulation frequency.

The MAX20077/MAX25277 variants are available in a small (3mm x 3mm), 12-pin, side-wettable TDFN package with an exposed pad, and require very few external components.

Applications

  • Automotive
  • High-Voltage DC-DC Converters
  • Industrial
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file View Data Sheet (Rev.7)
Documentation View All Documentation
SIMPLIS Models MAX20077 SIMPLIS Schematic Download 489.73KB
Part Models 16
1ku List Price Starting From $1.46
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MAX20077

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UPDATED 11/09/2020
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MAX20077-MAX25277: 36V, 2.5A Mini Buck Converter with 3.5uA IQ Data Sheet (Rev.7)

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2022-10-04

04:20

Introduction to the MAX20077 / MAX25277 36V, 2.5A Mini Buck Converter with 3.5uA IQ

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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.

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Software & Part Ecosystem

Evaluation Kits 1

MAX20077EVKIT

Evaluation Kit for the MAX20077/MAX25277

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MAX20077EVKIT

Evaluation Kit for the MAX20077/MAX25277

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MAX20077EVKIT
Evaluation Kit for the MAX20077/MAX25277

Features and Benefits

  • 3.5V to 36V Input Supply Range
  • 5V or 3.3V Fixed Output Voltage, or Adjustable Between 1V and 10V
  • Delivers Up to 2.5A Output Current
  • Frequency-Synchronization Input
  • Enable Input
  • Voltage-Monitoring PGOOD Output
  • Proven PCB Layout
  • Fully Assembled and Tested
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Product Detail

The MAX20077 evaluation kit (EV kit) provides a proven design to evaluate the MAX20077/MAX25277 2.1MHz/400kHz high-voltage mini-buck converter in a 12-pin side-wettable TDFN package. All components are rated for the automotive temperature range. Various test points and jumpers are included for evaluation.

The standard EV kit comes with the MAX20077ATCA/VY+ installed (5V, 2.1MHz), but it can also be used to evaluate other MAX20077/MAX25277 variants with minimal component changes (e.g., IC replacement of U1).

Applications

  • Automotive
  • High-Voltage DC-DC Converters
  • Industrial

Evaluation Kits1

MAX20077EVKIT

Evaluation Kit for the MAX20077/MAX25277

Tools & Simulations 2

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MAXREFDES175

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