UC3872N - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

UC3872N
Manufacturer

TI
ChipWorker Part#

CW83628467
Category

Active Chip
Package

DIP-14
Description

Resonant Lamp Driver 24V 14Pin PDIP Tube
Documentation

Datasheet

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UC3872N Specifications

Attribute	Attribute Value

Part Number	UC3872N
Manufacturer	TI
ChipWorker Part#	CW83628467
Category	Active Chip
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	14 Pin
Case/Package	DIP-14
Frequency	57kHz ~ 78kHz
Supply Voltage (DC)	4.50V (min)
Supply Current	6 mA
Number of Positions	14 Position
Threshold Voltage	4.20 V
Output Voltage (Max)	14.9 V
Output Current (Max)	100 mA
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Supply Voltage	4.5V ~ 24V
Supply Voltage (Max)	24 V
Supply Voltage (Min)	4.5 V
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Size-Length	19.3 mm
Size-Width	6.35 mm
Size-Height	4.57 mm
Operating Temperature	0℃ ~ 70℃
Product Lifecycle Status	Obsolete
Packaging	Cut Tape (CT)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15

Product Description

The UC3872N 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"s resonant frequency. Suitable for battery-powered applications, the UC3872 draws only 1µA 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, under-voltage lockout, accurate minimum and maximum frequency control.
Controls different types of lamps - Cold cathode fluorescent, neon and gas discharge
Zero voltage switching (ZVS) of push-pull drivers
Accurate control of lamp current
Variable lamp intensity control
Open lamp detection circuitry
10mA ZD input current
1W Power dissipation at TA=25°C

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