IRS2552DPBF International Rectifier, IRS2552DPBF Datasheet - Page 18

• Manufacturer Part Number: IRS2552DPBF
• Description: IC CTLR BALLAST CCFL/EEFL 16-DIP
• Manufacturer: International Rectifier
• Type: CCFL/EEFL Controllerr

Specifications of IRS2552DPBF

• Frequency: 39 ~ 69 kHz
• Current - Supply: 10mA
• Current - Output: 450mA
• Voltage - Supply: 10.6 V ~ 15.6 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-DIP (0.300", 7.62mm)
• Module Configuration: Half Bridge
• Supply Current: 10mA
• Supply Voltage Range: 9.6V To 16.6V
• Driver Case Style: DIP
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +125°C
• Base Number: 25
• Rohs Compliant: Yes
• Svhc: No SVHC
• Package: 16-pin DIP
• Circuit: Half-Bridge Driver
• Offset Voltage (v): 600
• Output Source Current Min (ma): 300
• Output Sink Current Min (ma): 450
• Pbf: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Maximum duty cycle
The ICR charging current during ignition mode and the ICD charging current are given by:
The ICR charging current and frequency during run mode are given by:
Dimming Function
The IRS2552D supports burst mode dimming, meaning that the output drive to the lamps is pulsed on and off at
a low frequency and the burst duty cycle is adjusted to control the average current and therefore the light output
of the lamps. The IRS2552D contains a low frequency oscillator that generates a ramp waveform at the CR pin
from 0 V to 5 V. The ramp frequency is dependent on the value of the external C
control voltage is fed into the DIM pin which is compared with the dimming ramp by means of an internal
comparator, which generates the PWM signal that is used internally to switch the outputs on and off. Thus when
the DIM voltage is at 5 V the outputs will be on all of the time and when it is at 0 V the outputs will be off all of the
time. Alternatively a PWM dimming control signal from 0 V to 5 V can be fed directly into the DIM pin to allow
external PWM control independent of the dimming ramp. During the off period the LO and HO outputs are both
low.
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© 2009 International Rectifier
IRS2552D