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IR2156PBF Datasheet(PDF) 7 Page - International Rectifier

Part # IR2156PBF
Description  BALLAST CONTROL IC
Download  21 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR2156PBF Datasheet(HTML) 7 Page - International Rectifier

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IR2156(S)PbF
7
State Diagram
VCC < 9.5V
(VCC Fault or Power Down)
or
SD > 5.1V
(Lamp Fault or Lamp Removal)
UVLO Mode
1/
2-Bridge Off
I
QCC ≅ 120µA
CPH = 0V
CT = 0V (Oscillator Off)
PREHEAT Mode
1/
2-Bridge oscillating @ fPH
RPH // RT
CPH Charging @ I
CPH = 5 µA
CS Enabled @ CPH > 7.5V
R
VDC to COM = 12.6kΩ @
CPH > 7.5V
VCC > 11.5V (UV+)
and
SD < 5.1V
Power Turned On
FAULT Mode
Fault Latch Set
1/
2-Bridge Off
I
QCC ≅ 180µA
CPH = 0V
VCC = 15.6V
CT = 0V (Oscillator Off)
CS > 1.3V
(Failure to Strike Lamp)
CS > 1.3V
(Lamp Removal)
or
SD > 5.1V
or
VCC < 9.5V (UV-)
(Power Turned Off)
CPH > 10V
(End of PREHEAT Mode)
RUN Mode
RPH = Open
1/2-Bridge Oscillating @
f
RUN
Ignition Ramp
Mode
RPH Open
f
PH ramps to fRUN
CPH charging
CPH > 13V
CS > 1.3V
(Lamp Fault)


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