IR2156 International Rectifier, IR2156 Datasheet - Page 6

• Manufacturer Part Number: IR2156
• Description: IC CNTL BALLAST 600V 0.5A 14-DIP
• Manufacturer: International Rectifier
• Type: Ballast Controllerr

Specifications of IR2156

• Frequency: 28 ~ 32 kHz
• Current - Supply: 1mA
• Voltage - Supply: 11.5 V ~ 15.6 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 14-DIP (0.300", 7.62mm)
• For Use With: IRPLCFL4 - IC BALLAST DIMMING CFL 3-WAYIRPLCFL3 - KIT DESIGN CFL TRIAC DIMMING
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -
• Other names: *IR2156

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