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Updated at 17/06/2025 10:30:15(UTC+8)
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Description
- DESCRIPTION
- The LX1688 is a fixed frequency, dual current/voltage mode, switching regulator that provides the control function for Cold Cathode Fluorescent Lighting (CCFL). This controller can be used to drive a single lamp, but is specifically designed for multiple lamp LCD panels. The IC can be configured as a master or slave and synchronize up to 12 controllers.
- The LX1688 includes highly integrated universal ‘PWM or DC’ dim input that allows either a PWM or DC input to adjust brightness without requiring external conditioning, since a single external capacitor CPWM can be used to integrate a PWM input. Burst mode dimming is possible if the user supplies a low frequency PWM signal on the BRITE input and no CPWM capacitor is used. The controller utilizes Microsemi’s patented direct drive fixed frequency topology and patented resonant lamp strike generation technique.
- KEY FEATURES
- ▪ Provision to Synchronize Lamp Current & Frequency With Other Controllers
- ▪ Dimming With Analog or Digital (PWM) Methods (>20:1)
- ▪ Programmable Fixed Frequency
- ▪ Adjustable Power-up Reset
- ▪ ENABLE/BRITE Polarity Selection
- ▪ Voltage Limiting on Step-up Transformer Secondary Winding
- ▪ Open Lamp Timeout Circuitry
- ▪ Switched VDD Output (10mA)
- ▪ Micro-Amp Sleep Mode
- ▪ Operates With 3.3V to 5V Supply
- ▪ 100mA Output Drive Capability
- APPLICATIONS / BENEFITS
- ▪ Desktop LCD Monitors
- ▪ Multiple Lamp Panels
- ▪ Low Ambient Light Displays
- ▪ High Efficiency
- ▪ Lower Cost than Conventional Buck/Royer Inverter Topologies
- ▪ Improved Lamp Strike Capability
- ▪ Improved Over-Voltage Control
LX1688CPW Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Mounting Style | Surface Mount |
| Number of Pins | 24 Pin |
| Case/Package | TSSOP-24 |
| Frequency | 60kHz ~ 70kHz |
| Supply Voltage (DC) | 5.50V (max) |
| Supply Current | 5.5 mA |
| Operating Temperature (Max) | 70 ℃ |
| Operating Temperature (Min) | 0 ℃ |
| Supply Voltage | 3V ~ 5.5V |
| Show | |
| Operating Temperature | 0℃ ~ 70℃ |
| Product Lifecycle Status | Obsolete |
| Packaging | Tube |
| RoHS | RoHS Compliant |
| Lead-Free Status | Lead Free |
| ECCN Code | EAR99 |
Order guide
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- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
Contact Us
If you have any problem,please email to sales@manychip.com, we will response as soon as possisble.
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