MAX1561

PRODUCTION

High-Efficiency, 26V Step-Up Converters for Two to Six White LEDs

26V, Step-Up DC-DC Powers Up to 6 White LEDs with Up to 87% Efficiency

Data Sheet (Rev. 1) Product Selection Table
Part Models
2
1ku List Price
Starting From $1.69
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Part Details

  • Accurate Current Regulation for Uniform Illumination
  • High Efficiency Up to 87%
  • Flexible Analog or PWM Dimming Control
  • Up to 900mW Output Power with Internal 30V MOSFET Switch
  • Fast 1MHz (MAX1561) or 500kHz (MAX1599) PWM Operation
  • Small, Low-Profile External Components
  • 2.6V to 5.5V Input Range
  • 26V (max) Output with Overvoltage Protection
  • Optimized for Low 15mVP-P Input Ripple
  • Soft-Start with Zero Inrush Current
  • 0.3µA Shutdown Current
  • Tiny 8-Pin 3mm x 3mm Thin DFN Package
MAX1561
High-Efficiency, 26V Step-Up Converters for Two to Six White LEDs
MAX1561, MAX1599: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 4

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Inductorless (Charge Pump) LED Drivers 2
MAX1570
PRODUCTION White LED Current Regulator with 1x/1.5x High-Efficiency Charge Pump
MAX1910
PRODUCTION 1.5x/2x High-Efficiency White LED Charge Pumps
Product 1
MAX1912
1.5x/2x High-Efficiency White LED Charge Pumps
Step-Down (Buck) LED Drivers 1
MAX1916
PRODUCTION Low-Dropout, Constant-Current Triple White LED Bias Supply
Step-Up (Boost) LED Drivers 1
MAX1848
PRODUCTION White LED Step-Up Converter in SOT23
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Evaluation Kits

MAX1561EVKIT

Evaluation Kit for MAX1561

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Features and Benefits

  • Constant-Current Regulation for Uniform Illumination
  • High 84% Efficiency
  • Flexible Analog or PWM Dimming Control
  • 900mW Output Power with Internal 30V MOSFET Switch
  • Output Overvoltage Protection
  • Low 15mVP-P Input Ripple
  • Small, Low-Profile Components
  • 2.6V to 5.5V Input Range
  • 0.3µA Shutdown Current
  • Tiny 3mm x 3mm Thin QFN
  • Fully Assembled and Tested

Product Details

The MAX1561 evaluation kit is a fully assembled and tested circuit board that evaluates the MAX1561 white LED step-up DC-to-DC converter. The circuit operates from 2.6V to 5.5V and delivers an adjustable 0 to 20mA to drive a series of up to six white LEDs in series.

Applications

  • Cell Phones/Smartphones
  • e-Books and Subnotebooks
  • PDAs, Palmtops, and Wireless Handhelds
  • White LED Display Backlighting
MAX1561EVKIT
Evaluation Kit for MAX1561

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