MAX1611

Digitally Controlled CCFL Backlight Power Supplies

SMBus™ Controlled CCFL Supply Provides Bright, Flicker-Free Operation and Protects Lamps

Data Sheet (Rev. 0)

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Part Details

Direct Digital Control of CCFL Brightness
Low Supply Current:
- 3mA Max Operating
- 20µA Max Shutdown
Low-Voltage Operation, Down to 4.5V
Internal 26V, 0.7Ω Power Switch
Protection Against Open or Shorted Lamps
Supports Isolated Transformer Secondary Winding
SMBus Serial Interface (MAX1611)
No Flicker at Low Brightness (internal 280Hz current chopping)
High Power-to-Light Efficiency
Selectable 290kHz/145kHz Switching Frequency
Oscillator SYNC Input
16-Pin Narrow SO Package

Documentation

Data Sheet 1

MAX1610-MAX1611: Digitally Controlled CCFL Backlight Power Supplies Data Sheet (Rev.0) 09/01/1996

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
CCFL Controllers 2
MAX753	NOT RECOMMENDED FOR NEW DESIGNS	CCFL Backlight and LCD Negative Contrast Controller
MAX1739	NOT RECOMMENDED FOR NEW DESIGNS	Wide-Brightness-Range CCFL Backlight Controllers

Evaluation Kits

Evaluation Kit for the MAX1610, MAX1611

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Product Details

The MAX1611 evaluation kit (EV kit) is an assembled surface-mount demonstration board. The kit embodies the standard cold-cathode fluorescent lamp application circuit shown in Figure 4 of the MAX1610/MAX1611 data sheet. Additional circuitry allows an IBM®-compatible personal computer to use its parallel port to emulate an Intel System Management Bus (SMBus™) interface.

The board comes with a MAX1611 installed, but with minimal modification, the EV kit can also be used to evaluate the MAX1610.

Applications