DS3994Z+
Obsolete4-CHANNEL COLD-CATHODE FLUORESCENT LAMP CONTROLLER
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DS3994Z+
Obsolete4-CHANNEL COLD-CATHODE FLUORESCENT LAMP CONTROLLER
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | DS3994Z+ |
|---|---|
| Current - Supply | 9 mA |
| Dimming | True |
| Frequency [Max] | 80 kHz |
| Frequency [Min] | 20 kHz |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 C |
| Package / Case | 28-SOIC |
| Package / Case [custom] | 0.295 " |
| Package / Case [custom] | 7.5 mm |
| Supplier Device Package | 28-SOIC |
| Type | CCFL Controller |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 3.64 | <3d |
| 10 | $ 2.39 | |||
| 25 | $ 2.06 | |||
| 100 | $ 1.69 | |||
| 250 | $ 1.51 | |||
| 500 | $ 1.40 | |||
| 1000 | $ 1.31 | |||
| 2500 | $ 1.22 | |||
| 5000 | $ 1.16 | |||
Description
General part information
DS3994 Series
The DS3994 is a 4-channel controller for cold-cathode fluorescent lamps (CCFLs) that backlight liquid crystal displays (LCDs) in TV and PC monitor applications. The DS3994's features make it suitable for use in even the largest LCDs, while its low BOM cost makes it ideal for the entire range of LCD TVs and monitors.The DS3994 can stagger the lamp bursts from each of the four channels. This feature allows scanning backlight schemes for video quality improvement to be implemented using a single CCFL controller IC, making it very simple and inexpensive to provide this enhancement. In addition, staggering the bursts from each channel can be used to minimize current ripple on the display power supply, which is especially important for larger LCDs. The relative stagger between each of the channels is programmable, so this feature can be tailored to the specific application.The DS3994 uses a push-pull drive architecture but it can also support full and half bridge drive schemes. Contact the factory for more details.ApplicationsLCD PC MonitorsLCD-TVs
Documents
Technical documentation and resources