LT1249CN8
PFC IC Average Current 100kHz 8-PDIP
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Part Number : LT1249CN8
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Package/Case : PDIP-8
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Brands : ADI
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Components Categories : Power Factor Correction - PFC
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Datesheet : LT1249CN8 DataSheet (PDF)
Overview of LT1249CN8
The LT1249CN8 is a high-performance Power Factor Correction (PFC) integrated circuit designed to enhance power efficiency in electronic systems. It ensures a high power factor by actively adjusting the input current waveforms, making it an ideal solution for applications requiring compliance with power quality standards.
Pinout
Detailed Pin Description:
- Pin 1 (VIN): Input Voltage.
- Pin 2 (RTN): Ground Reference.
- Pin 3 (IAC): AC Current Sense Input.
- Pin 4 (VAC): AC Voltage Sense Input.
- Pin 5 (VCC): Power Supply Voltage.
- Pin 6 (COMP): Compensation Pin for Feedback Loop.
- Pin 7 (FB): Feedback Pin.
- Pin 8 (OUT): PFC Output.
Note: The pin configuration above is a general representation. Refer to the specific datasheet for precise details.
Circuit Diagram
[Include a simple circuit diagram showcasing the LT1249CN8 in a typical Power Factor Correction application.]
Key Features
- Active Power Factor Correction: Improves power factor for enhanced efficiency.
- Wide Input Voltage Range: Suitable for a variety of input voltage levels.
- Internal Compensation: Simplifies external circuitry for ease of design.
- Overvoltage Protection: Ensures robust performance under varying conditions.
Note: Comprehensive technical details can be available in the LT1249CN8 datasheet.
Application
- Switched Mode Power Supplies (SMPS): Used in power supplies to improve power factor.
- LED Drivers: Enhances power efficiency in LED lighting applications.
- Motor Drives: Ensures efficient power transfer in motor control circuits.
Functionality
The LT1249CN8 actively corrects the power factor by adjusting the input current waveform to be in phase with the input voltage, resulting in improved overall power efficiency.
Equivalents/Alternatives
LT1249CS8: Surface-mount version with similar specifications.
L6562: Alternative PFC controller suitable for similar applications.
Usage Guide
- Refer to the official datasheet for comprehensive technical details.
- Implement the recommended external components for optimal performance.
Frequently Asked Questions
Q: What is the recommended input voltage for the LT1249CN8?
A: Refer to the datasheet for information on the recommended input voltage range.
Q: Is external compensation required for this PFC controller?
A: The LT1249CN8 features internal compensation, but refer to the datasheet for specific details.
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Source Content uid | LT1249CN8 | Rohs Code | No |
| Part Life Cycle Code | Transferred | Ihs Manufacturer | LINEAR TECHNOLOGY CORP |
| Part Package Code | DIP | Package Description | DIP, DIP8,.3 |
| Pin Count | 8 | Manufacturer Package Code | N |
| Reach Compliance Code | not_compliant | ECCN Code | EAR99 |
| HTS Code | 8542.39.00.01 | Analog IC - Other Type | POWER FACTOR CONTROLLER |
| Control Mode | CURRENT-MODE | Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 25 V | Input Voltage-Min | 11.5 V |
| JESD-30 Code | R-PDIP-T8 | JESD-609 Code | e0 |
| Moisture Sensitivity Level | 1 | Number of Functions | 1 |
| Number of Terminals | 8 | Operating Temperature-Max | 100 °C |
| Operating Temperature-Min | Output Current-Max | 1.5 A | |
| Output Voltage-Nom | 7.5 V | Package Body Material | PLASTIC/EPOXY |
| Package Code | DIP | Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR | Package Style | IN-LINE |
| Qualification Status | Not Qualified | Seated Height-Max | 3.937 mm |
| Supply Current-Max (Isup) | 12 mA | Surface Mount | NO |
| Switcher Configuration | SINGLE | Switching Frequency-Max | 100 kHz |
| Technology | BIPOLAR | Temperature Grade | OTHER |
| Terminal Finish | TIN LEAD | Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54 mm | Terminal Position | DUAL |
| Width | 7.62 mm |
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