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LT1183

Features: Wide Input Voltage Range: 3V to 30V Low Quiescent Current High Switching Frequency: 200kHz CCFL Switch: 1.25A, LCD Switch: 625mA Grounded or Floating Lamp Configurations Open-Lamp Protection Positive or Negative Contrast CapabilityApplication Notebook and Palmtop Computers Portable Inst...

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SeekIC No. : 004400409 Detail

LT1183: Features: Wide Input Voltage Range: 3V to 30V Low Quiescent Current High Switching Frequency: 200kHz CCFL Switch: 1.25A, LCD Switch: 625mA Grounded or Floating Lamp Configurations Open-Lamp Protect...

LT1183 Data Sheet

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Part Number:
LT1183
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Wide Input Voltage Range: 3V to 30V
Low Quiescent Current
High Switching Frequency: 200kHz
CCFL Switch: 1.25A, LCD Switch: 625mA
Grounded or Floating Lamp Configurations
Open-Lamp Protection
Positive or Negative Contrast Capability


Application

Notebook and Palmtop Computers
Portable Instruments
Automotive Displays
Retail Terminals


Pinout

Connection Diagram




Specifications

VIN, BAT, Royer, Bulb ................................................ 30V
CCFL VSW, LCD VSW ...............................................  60V
Shutdown ..................................................................  6V
ICCFL Input Current ..............................................  10mA
DIO Input Current (Peak, < 100ms) ...................... 100mA
LT1182: FBP, FBN, LT1183: FB Pin Current ............  ±2mA
LT1183/LT1184/1184F: REF Pin Source Current ....... 1mA
Junction Temperature (Note 1) ............................  100°C
Operating Ambient Temperature Range ... 0°C to 100°C
Storage Temperature Range ............... 65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C


Description

The LT®1182/LT1183 are dual current mode switchingregulators that provide the control function for Cold Cath-ode Fluorescent Lighting (CCFL) and Liquid Crystal Display(LCD) Contrast. The LT1184/LT1184F provide only theCCFL function. The ICs include high current, high efficiencyswitches, an oscillator, a reference, output drive logic,control blocks and protection circuitry. The LT1182 per-mits positive or negative voltage LCD contrast operation.

The LT1183 permits unipolar contrast operation and pinsout an internal reference. The LT1182/LT1183 supportgrounded and floating lamp configurations.

The LT1184Fsupports grounded and floating lamp configurations.

TheLT1184 supports only grounded lamp configurations. The




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