MAX5097

PRODUCTION

40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode

Industry's First Automotive Buck Converter with Low IQ LDO Mode Operates Seamlessly from 4V Cold Crank to 40V Input

Part Models
7
1ku List Price
Starting From $4.19
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Part Details

  • High-Efficiency Switcher Mode (Buck Mode) or Low-Quiescent-Current Linear Regulator (LDO Mode) Operation
  • Wide Operating Input Voltage Range
    • +5V to +40V Buck Mode
    • +4V to +40V LDO Mode
  • Fixed 3.3V or 5V and Adjustable (1.24V to 11V) Output Voltage Versions
  • 6µA (typ) Shutdown Current
  • Fixed 135kHz or 330kHz Switching Frequency
  • External Frequency Synchronization
  • Programmable Soft-Start
  • Integrated Microprocessor Reset (Active-Low RESET) Circuit with Programmable Timeout Period
  • Thermal and Short-Circuit Protection
  • -40°C to +125°C Automotive Temperature Range
  • Thermally-Enhanced Package Dissipates
    • 2.6W at TA = +70°C (16-Pin TQFN)
    • 1.7W at TA = +70°C (20-Pin TSSOP)
MAX5097
40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode
MAX5096, MAX5097: Simplified Diagram
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Documentation

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Internal Power Switch Buck Regulators 2
MAX5080 PRODUCTION 1A, 40V, MAXPower Step-Down DC-DC Converters
MAX5033 PRODUCTION 500mA, 76V, High-Efficiency, MAXPower Step-Down DC-DC Converter
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Tools & Simulations


Evaluation Kits

MAX5097AEVKIT

MAX5097A Evaluation Kit

Features and Benefits

  • 5V to 40V Input Voltage (Buck Mode)
  • 4V to 40V Input Voltage (LDO Mode)
  • 3.3V Output at Up to 600mA (Buck Mode)
  • Low Quiescent Current 3.3V Output at Up to 100mA (LDO Mode)
  • Configurable Output Voltage
  • 330kHz Switching Frequency
  • Capable of Synchronizing to an External Clock
  • Open-Drain RESET Output PCB Pad
  • Surface-Mount Components
  • Fully Assembled and Tested

Product Details

The MAX5097A evaluation kit (EV kit) demonstrates the MAX5097A in a standard application circuit demonstrating high efficiency. The EV kit circuit features a MAX5097A IC in a 16-pin TQFN package. The EV kit can operate from a 5V to 40V input source.

The MAX5097A EV kit includes a current-mode DC-DC step-down regulator (Buck Mode) and a selectable low-quiescent- current LDO regulator for operation at light-load (LDO Mode). The step-down regulator provides a 3.3V output with up to 600mA output current. In LDO Mode, the MAX5097A IC provides up to 100mA output current. The EV kit circuit's step-down regulator operates at a switching frequency of 330kHz, thus allowing the use of small ceramic capacitors at the output. The MAX5097A is capable of synchronizing to an external digital clock.

The MAX5097A EV kit can be reconfigured for other output voltages by selecting appropriate external components. The EV kit circuit features soft-start, output current-limit, and an open-drain active-low reset output PCB pad.

MAX5097AEVKIT
MAX5097A Evaluation Kit

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