IRS21571DSPBF International Rectifier, IRS21571DSPBF Datasheet - Page 16

• Manufacturer Part Number: IRS21571DSPBF
• Description: IC BALLAST CTRL 600V 16-SOIC
• Manufacturer: International Rectifier
• Type: Ballast Controllerr

Specifications of IRS21571DSPBF

• Frequency: 43.7 ~ 48.3 kHz
• Current - Supply: 10mA
• Current - Output: 180mA
• Voltage - Supply: 11.5 V ~ 15.6 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Package: 16-lead SOIC Narrow
• Circuit: Fluorescent Ballast IC
• Offset Voltage (v): 600
• Output Source Current Min (ma): 180
• Output Sink Current Min (ma): 260
• Pbf: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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The deadtime can be programmed by means of the external R
values, using the graph shown in Figure 5.
The R
order to maintain proper linearity between the R
the R
closed loop control.
T
T
pin current should be kept between 50µA and 500µA. The R
input is a voltage-controlled current source, where the voltage is regulated to be approximately 2.0V. In
tDEAD
(usec)
0.1
10
1
1
Figure 5: Deadtime versus R
T
pin current and the C
Figure 4
RDT
16
(Kohms)
10
DT
resistor, given a certain range of C
T
pin can also be used as a feedback point for
DT
CT = 220 pF
CT = 470 pF
CT = 1 nF
T
HO-VS
capacitor charging current, the value of
CT
LO
100
© 2008 International Rectifier
IRS21571D
T
capacitor