MAX8560
Info: : PRODUCTION
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MAX8560

4MHz, 500mA Synchronous Step-Down DC-DC Converters in Thin SOT and TDFN

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First 4MHz Step-Down DC-DC Converters Deliver 500mA with Over 90% Efficiency in SOT23 and TDFN

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.13
Features
  • Up to 4MHz PWM Switching Frequency
  • 500mA Guaranteed Output Current
  • 40µA (typ) Quiescent Current
  • Adjustable Output Voltage from 0.6V to 2.5V
  • Logic-Controlled Output Voltage (MAX8561)
  • Drives External Bypass FET (MAX8562)
  • ±1.5% Initial Accuracy
  • Soft-Start Eliminates Inrush Current
  • Fast Voltage-Positioning Transient Response
  • Internal Synchronous Rectifier
  • 2.7V to 5.5V Input
  • 0.1µA Logic-Controlled Shutdown
  • Thermal Shutdown
  • Thin SOT23 or Space-Saving 3mm x 3mm x 0.8mm TDFN Packages
Additional Details
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The MAX8560/MAX8561/MAX8562 step-down DC-DC converters are optimized for applications that prioritize small size and high efficiency. They utilize a proprietary hysteretic-PWM control scheme that switches with fixed frequency and is adjustable up to 4MHz, allowing customers to trade efficiency for smaller external components. Output current is guaranteed up to 500mA, while quiescent current is only 40µA (typ).

Internal synchronous rectification greatly improves efficiency and eliminates the external Schottky diode required in conventional step-down converters. Built-in soft-start eliminates inrush current to reduce input capacitor requirements. The MAX8561 features logic-controlled output voltage, while the MAX8562 drives an external bypass FET.

The MAX8560 is available in a 5-pin Thin SOT23 package. The MAX8561/MAX8562 are available in space-saving 8-pin 3mm x 3mm Thin DFN packages.

Applications

  • CDMA/RF Power-Amplifier Supplies
  • Cell Phones/Smartphones
  • Microprocessor/DSP Core Supplies
  • PDAs, DSC, and MP3 Players
Part Models 2
1ku List Price Starting From $2.13

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX8560EZK+
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  • HTML
MAX8560EZK+T
  • HTML
  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX8561EVKIT

Evaluation Kit for the MAX8561, MAX8562

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MAX8561EVKIT

Evaluation Kit for the MAX8561, MAX8562

Evaluation Kit for the MAX8561, MAX8562

Features and Benefits

  • 2.7V to 5.5V Input Voltage Range
  • 0.6V to 2.5V Adjustable Output Voltage Range
  • VOUT1 = 1.8V/1.5V at 500mA (MAX8561)
  • VOUT2 = 1.2V at 400mA or Bypass Mode (MAX8562)
  • 2MHz PWM Switching Frequency (MAX8561)
  • 4MHz PWM Switching Frequency (MAX8562)
  • 0.1µA (typ) Shutdown Current
  • Surface-Mount Construction
  • Fully Assembled and Tested

Product Detail

The MAX8561 evaluation kit (EV kit) demonstrates the MAX8561/MAX8562s' up to 4MHz pulse-width modulated (PWM) step-down DC-DC converters. The two circuits are optimized for powering the DSP/microprocessor or the power amplifiers (PAs) in wireless applications. The MAX8561 circuit provides two adjustable output voltages in the 0.6V to 2.5V range from a 2.7V to 5.5V input, and can deliver 500mA of load current. In comparison, the MAX8562 circuit provides an adjustable voltage in the 0.6V to 2.5V range and a bypass mode where the output voltage is shorted to the input by an external MOSFET.

Applications

  • CDMA/RF Power-Amplifier Supplies
  • Cell Phones/Smartphones
  • Microprocessor/DSP Core Supplies
  • PDAs, DSC, and MP3 Players

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