1FEATURES

• Qualified for Automotive Applications

• Regulates Lamp Power

• Compensates For Lamp Temperature

• Fixed Frequency Operation

• Current Mode Control

• Overcurrent Protected

• Overvoltage Shutdown

• Open and Short Protected

• High-Current FET Drive Output

• Operates Over Wide Battery Voltage Range:

5 V to 18 V

DESCRIPTION

The UCC2305 integrates all of the functions required to control and drive one HID lamp. The UCC2305 is

tailored to the demanding, fast turn-on requirements of automobile headlamps, but is also applicable to all other

lighting applications where HID lamps are selected. HID lamps are ideal for any lighting applications that can

benefit from very high efficiency, blue-white light color, small physical lamp size, and very long life.

The UCC2305 contains a complete current mode pulse-width modulator, a lamp power regulator, lamp

temperature compensation, and total fault protection. Lamp temperature compensation is critical for automobile

headlamps, because without compensation, light output varies dramatically from a cold lamp to one that is fully

warmed up.

The UCC2305 is tested for full performance with ambient temperature from –40°C to 105°C.