MAX25277

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

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


Please check latest availability status for a specific part variant.

Description

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.

Key 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

Applications/Uses

  • Automotive
  • High-Voltage DC-DC Converters
  • Industrial
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
MAX20077 3.540110
3.3
5
Preset
Resistor
2.5InternalYesYes1
400
2100
EE-Sim
TDFN-CU/12
$1.09 @1k
MAX25277 3
TDFN-CU/12
-
See All Step-Down Switching Regulators (367)
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.


MAX20077EVKIT: Evaluation Kit for the MAX20077/MAX25277

Quality and Environmental Data

Request Reliability Report for: MAX25277 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • EE-Sim: Design & Simulate MAX25277
  • CAD Symbols and Footprints

  • MAX25277ATCA/VY+
  • MAX25277ATCB/VY+
  • 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 >

     
    Status:
    Package:
    Temperature:

    Related Resources


    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

    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

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

    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

    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

    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

    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

    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 IQ

    • 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 ILIM Option, Buck Mode)

    MAXM15465
    4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM15466
    4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM15467
    4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17624
    2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17623
    2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAX20049
    Flexible, Compact Quad Power Supply with 2.2MHz, 500mA Buck Converters and Dual LDOs for Automotive Camera Modules

    • Small Solution Size
    • EMI Solutions
    • Self-Protected and Robust

    MAX17673
    Integrated 4.5V to 60V Synchronous 1.5A HV Buck and Dual 2.7V to 5.5V, 1A Buck Regulators

    • Reduces External Components and Total Cost
    • Integrates Three DC-DC Regulators
    • Reduces Power Dissipation

    MAX77813
    High-Efficiency Buck-Boost Converter

    • VIN Range: 2.30V to 5.5V
    • VOUT Range: 2.60V to 5.14V (I2C Programmable in 20mV Step)
    • Up to 2A Output Current in Boost Mode (VIN = 3.0V, VOUT = 3.4V, ILIM = High)