IR2156 Datasheet, PDF (1/24 Pages) International Rectifier – BALLAST CONTROL IC

Data Sheet No. PD60182-I
IR2156(S) & (PbF)
Features
• ^{Ballast control and half-bridge driver in one IC}
• ^{Programmable preheat frequency}
• ^{Programmable preheat time}
• ^{Internal ignition ramp}
• ^{Programmable over-current threshold}
• ^{Programmable run frequency}
Description
The IR2156 incorporates a high voltage half-bridge
gate driver with a programmable oscillator and state
diagram to form a complete ballast control IC. The
IR2156 features include programmable preheat and
run frequencies, programmable preheat time, program-
mable dead-time, and programmable over-current pro-
tection. Comprehensive protection features such as
protection from failure of a lamp to strike,filament fail-
ures, as well as an automatic restart function, have
been included in the design. The IR2156 is available in
both 14 lead PDIP and 14 lead SOIC packages.
BALLAST CONTROL IC
• ^{Programmable dead time}
• ^{DC bus under-voltage reset}
• ^{Shutdown pin with hysteresis}
• ^{Internal 15.6V zener clamp diode on Vcc}
• ^{Micropower startup (150µA)}
• ^{Latch immunity and ESD protection}
• ^{Also available LEAD-FREE (PbF)}
Packages
14 Lead PDIP
14 Lead SOIC
(narrow body)
CFL Application Diagram
D_BOOT
R _BUS
R _SUPPLY
C_VCC2 C_VCC1
R_T
R_PH
C_T C _VDC
NC
1
VCC
2
VDC
3
RT
4
RPH
5
CT
6
CPH
7
C_CPH
14 ^VB
HO
13
M1
VS
12
LO^{C BOOT}
11
M2
CS
10
SD
9
COM
8
R₁
C_CS
R_CS
C _SNUB
C_RES
D_CP2
L_RES
C_CP
D_CP1
D _RECT1
C _ELCAP1
C _ELCAP1
D_RECT2
L FILTE
R
L
F1
C FILTE
R
N
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