UC3872M
ActiveRESONANT LAMP BALLAST CONTROLLER
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UC3872M
ActiveRESONANT LAMP BALLAST CONTROLLER
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Technical Specifications
Parameters and characteristics for this part
| Specification | UC3872M |
|---|---|
| Current - Supply | 6 mA |
| Dimming | False |
| Frequency [Max] | 78 kHz |
| Frequency [Min] | 57 kHz |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °C |
| Package / Case | 0.154 in |
| Package / Case | 16-SSOP |
| Package / Case | 3.9 mm |
| Supplier Device Package | 16-SSOP |
| Type | Ballast Controller |
| Voltage - Supply [Max] | 24 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 | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 8.66 | |
| 10 | $ 7.83 | |||
| 75 | $ 7.46 | |||
| 150 | $ 6.48 | |||
| 300 | $ 6.19 | |||
| 525 | $ 5.64 | |||
| 1050 | $ 4.91 | |||
| Texas Instruments | TUBE | 1 | $ 7.71 | |
| 100 | $ 6.29 | |||
| 250 | $ 4.94 | |||
| 1000 | $ 4.19 | |||
Description
General part information
UC3872 Series
The UC3872 is a resonant lamp ballast controller optimized for driving cold cathode fluorescent, neon, and other gas discharge lamps. The resonant power stage develops a sinusoidal lamp drive voltage, and minimizes switching loss and EMI generation. Lamp intensity adjustment is accomplished with a buck regulator, which is synchronized to the external power stage\x92s resonant frequency. Suitable for automotive and battery powered applications, the UC3872 draws only 1\xB5A when disabled.
Soft start and open lamp detect circuitry have been incorporated to minimize component stresses. Open lamp detection is enabled at the completion of a soft start cycle. The chip is optimized for smooth duty cycle control to 100%.
Other features include a precision 1.2% reference, undervoltage lockout, and accurate minimum and maximum frequency control.
Documents
Technical documentation and resources