LT1183 - CCFL/LCD Contrast Switching Regulators
Datasheet 
DocumentationDatasheet
Spec Notice
Application Note
Reliability Data
cad_symbol
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
Typical Application
Description
The LT1182/LT1183 are dual current mode switching regulators that provide the control function for Cold Cathode Fluorescent Lighting (CCFL) and Liquid Crystal Display (LCD) Contrast. The LT1184/LT1184F provide only the CCFL function. The ICs include high current, high efficiency switches, an oscillator, a reference, output drive logic, control blocks and protection circuitry. The LT1182 permits positive or negative voltage LCD contrast operation. The LT1183 permits unipolar contrast operation and pins out an internal reference. The LT1182/LT1183 support grounded and floating lamp configurations. The LT1184F supports grounded and floating lamp configurations. The LT1184 supports only grounded lamp configurations.SO-16
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LT1183CS#PBF | SO | 16 | C | $6.25 | $5.15 |
| LT1183CS#TRPBF | SO | 16 | C | $5.21 | |
| LT1183CS | SO | 16 | C | $12.50 | $10.30 |
| LT1183CS#TR | SO | 16 | C | $10.42 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.