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LP3943ISQ
The LP3943ISQ is a versatile LED driver that can control up to 16 channels of RGB/White LEDs individually using SMBus or I2C interface
LP3943ISQ
The LP3943ISQ is a versatile LED driver that can control up to 16 channels of RGB/White LEDs individually using SMBus or I2C interface
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製造商零件號 # : LP3943ISQ
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包裝/封裝: WQFN-24
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製造商: Texas Instruments
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產品分類 : LED Drivers
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LP3943ISQ 數據表
目前的價格方案正在編制中。請聯絡我們的客戶服務團隊獲取最新的價格資訊。感謝您的理解和支援!
詳細說明
The LP3943ISQ sets itself apart with its exceptional performance and reliability, making it a top choice for engineers and designers looking to incorporate high-quality lighting solutions into their products. Its innovative design and cutting-edge technology ensure seamless integration and smooth operation for any project
主要特徵
- Microprocessor-Controlled Dimming
- Input Overvoltage Protection
- Soft Start for LEDs
- 16-Bit Pulse Width Modulation (PWM)
- Fault Detection and Alarm Functionality
規格
以下是所選零件的基本參數，涉及零件的特性及其所屬類別。
| Number of channels | 16 | LED current per channel (mA) | 25 |
| LED configuration | Parallel | Program memory | No |
| Topology | Linear | Programmable ramp control | No |
| Vin (min) (V) | 2.3 | Vin (max) (V) | 5.5 |
| Iout (max) (A) | 0.2 | Features | I2C control |
| Iq (typ) (mA) | 0.35 | Shutdown current (ISD) (typ) (µA) | 2 |
| Operating temperature range (°C) | -40 to 85 | Rating | Catalog |
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is LP3943ISQ?
The LP3943ISQ is a 8-channel, constant-current LED sink driver designed by Texas Instruments. It is ideal for applications requiring precise control of LED brightness, such as backlighting, signage, and architectural lighting.
How Does LP3943ISQ Work?
The LP3943ISQ works by regulating the current flowing through the connected LEDs to ensure consistent and uniform brightness. It features a high-resolution, PWM-controlled current adjustment to enable smooth dimming and brightness control. The driver also supports I2C communication for easy integration into digital control systems.
How Many Pins does LP3943ISQ have and What are the Functions of the Pinout Configuration?
The LP3943ISQ is housed in a 24-pin QFN (Quad Flat No-leads) package. The pinout configuration includes:
- VCC: Power supply voltage input.
- GND: Ground pin.
- SDA, SCL: I2C communication pins for serial data and clock, respectively.
- INT: Interrupt output pin.
- OUT0 – OUT7: Constant-current sink output pins for driving LEDs.
What are the Pros and Cons of LP3943ISQ?
Pros:
- Precise LED Control: Enables precise current regulation for consistent LED brightness.
- High Resolution PWM: Supports smooth dimming and brightness adjustment for visual effects.
- I2C Interface: Allows easy integration and control within digital systems.
- Multi-Channel Capability: Drives up to 8 channels, suitable for multi-LED applications.
- Thermal Shutdown Protection: Includes thermal shutdown feature for device protection.
Cons:
- Complexity: Requires understanding of LED current requirements and I2C communication for optimal usage.
- External Components: May need additional resistors or capacitors for specific LED configurations.
Are There Any Equivalents/Alternatives to LP3943ISQ for Recommendation?
- The TLC59213 from Texas Instruments offers similar multi-channel LED driver functionality.
- Alternatives to the LP3943ISQ include the AS1130 from AMS and the MAX6966 from Maxim Integrated.
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