MAX77596

24V, 300mA, Buck Converter with 1.1μA IQ

Offers a Unique Combination of Wide VIN Range, Low IQ, High Duty Cycle, and Small Solution Size


Please check latest availability status for a specific part variant.

Description

The MAX77596 is a small, synchronous buck converter with integrated switches. The device is designed to deliver up to 300mA with input voltages from 3.5V to 24V, while using only 1.1μA quiescent current at no load (fixed-output version). Voltage quality can be monitored by observing the active-low RESET signal. The device can operate near dropout by running at 98% duty cycle, making it ideal for battery-powered applications.

The device offers fixed 3.3V and 5V output versions, as well as an adjustable version. The adjustable version allows the user to program the output voltage between 1V and 10V by using a resistor-divider. Frequency is fixed at 1.7MHz, which allows for small external components and reduced output ripple. The device offers both forced-PWM and skip modes of operation, with ultra-low quiescent current of 1.1μA in skip mode.

The MAX77596 is available in a small (2mm x 2.5mm) 10-pin TDFN package and operates across the -40°C to +85°C temperature range.
MAX77596: Block Diagram MAX77596: Block Diagram Enlarge+

Key Features

  • Flexible Power for Systems That Require a Wide Input Voltage Range
    • VIN Range: 3.5V to 24V
    • Up to 300mA Output Current
    • Fixed 3.3V, 5V, or Programmable 1V to 10V Output Voltage
    • 98% (Max) Duty Cycle Operation with Low Dropout
    • Operates from 5V, 12V, or 20V USB Type-C Input Power
    • Operates from 2S, 3S, or 4S Li-Ion Battery
  • Minimizes Power Consumption and Extends Battery Life
    • 1.1μA Quiescent Current (3.3V Fixed Output Voltage)
    • 86% Peak Efficiency at 12VIN, 3.3VOUT
  • Minimizes Solution Size
    • 1.7MHz Operating Frequency
    • Small 2.0mm x 2.5mm x 0.75mm 10-Pin TDFN Package
  • Robust Solution
    • Short-Circuit, Thermal Protections
    • 6.67ms Internal Soft-Start Minimizes Inrush Current
    • Current-Mode Control Architecture
    • Up to 42V Input Voltage Tolerance

Applications/Uses

  • Point-of-Load Applications
  • Portable Devices Powered from 2s, 3s, or 4s Li+ Batteries
  • USB Type-C Devices
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX77596 3.524110
3.3
5
Preset
Resistor
0.3InternalYes11700EE-Sim
TDFN-EP/10
$1.50 @1k
See All Step-Down Switching Regulators (358)
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.


MAX77596EVKIT: Evaluation Kit for the MAX77596

Quality and Environmental Data

Product Reliability Reports: MAX77596.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Topmark Coding MAX77596

Tools & Models

  • EE-Sim: Design & Simulate MAX77596
  • MAX77596 SIMPLIS Schematic
  • CAD Symbols and Footprints

  • MAX77596ETBA+
  • MAX77596ETBA+T
  • MAX77596ETBB+
  • MAX77596ETBB+T
  • MAX77596ETBC+
  • MAX77596ETBC+T
  • 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:

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