LT1182 - CCFL/LCD Contrast Switching Regulators
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.Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LT1182CS#PBF | SO-16 | S | C | 05-08-1610 (S16) | Yes |
| LT1182CS#TRPBF | SO-16 | S | C | 05-08-1610 (S16) | Yes |
| LT1182IS#PBF | SO-16 | S | I | 05-08-1610 (S16) | Yes |
| LT1182IS#TRPBF | SO-16 | S | I | 05-08-1610 (S16) | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT1182CS#PBF | SO-16 | C | $6.25 | $5.15 | Yes | |
| LT1182CS#TRPBF | SO-16 | C | $5.21 | Yes | ||
| LT1182IS#PBF | SO-16 | I | $7.25 | $5.80 | Yes | |
| LT1182IS#TRPBF | SO-16 | I | $5.86 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
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.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC080A | LT1182CS | FLOATING CCFL W/ VARIABLE POSITIVE/NEGATIVE CONTRAST | Contact Factory | |
| Buy Now | |||
Applications
- Notebook and Palmtop Computers
- Portable Instruments
- Automotive Displays
- Retail Terminals
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LT1182
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
