MAX1599
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MAX1599

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

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

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Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price
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Features
  • 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
Additional Details
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The MAX1561/MAX1599 step-up converters drive up to six white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. The step-up converter topology allows series connection of the white LEDs so the LED currents are identical for uniform brightness. This configuration eliminates the need for ballast resistors and expensive factory calibration.

The MAX1561/MAX1599 include an internal, high-voltage, low-RDS(ON) N-channel MOSFET switch for high efficiency and maximum battery life. A single Dual Mode™ input provides a simple means of brightness adjustment and on/off control. Fast 1MHz (500kHz for the MAX1599) current-mode, pulse-width modulated (PWM) operation allows for small input and output capacitors and a small inductor while minimizing ripple on the input supply/battery. Programmable soft-start eliminates inrush current during startup.

Both devices are available in a space-saving, 8-pin 3mm x 3mm thin DFN package with exposed paddle (EP).

Applications

  • Cell Phones/Smartphones
  • e-Books and Subnotebooks
  • PDAs, Palmtops, and Wireless Handhelds
  • White LED Display Backlighting
Part Models 2
1ku List Price
price unavailable

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Jun 20, 2016

- 1612

ASSEMBLY

MAX1599ETA+

PRODUCTION

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Part Models

Product Lifecycle

PCN

Jun 20, 2016

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ASSEMBLY

MAX1599ETA+

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX1561EVKIT

Evaluation Kit for MAX1561

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MAX1561EVKIT

Evaluation Kit for MAX1561

Evaluation Kit for MAX1561

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 Detail

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

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