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OB3328NTP High Performance CCFL Controller Full Bridge On-Bright
On-Bright Electronics  On-Bright
OB3328NTP Datasheet PDF : 14 Pages
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OB3328/OB3328N
High Performance CCFL Controller Full Bridge
Electrical Characteristics
VDDA=5V, ENA=5V, RT=36Kohm, RI=107Kohm, ADIM=DDIM=5V, CBF=10nF, CSTIME = 1uF, TA=25oC if
not otherwise noted.
Parameter Sy
mbol Condition
Min Typ Max Units
e Current Consumption
fid IC Standby
Normal operating
a VDDA UVLO
Istandby ENA=0V
IVDD
-
5 20 uA
-
4
mA
n UVLO on
3.6
V
o UVLO off
4.4
V
B High Frequency Oscillator
to Operating frequency
Striking frequency
l Temp. stability
FOP
FSTK
48 50 52
62 65 68
TA = -20 oC to 85 oC - 200
-
KHz
KHz
PPM/ oC
tia Min. (overlap) duty cycle
1%
Max. (overlap) duty cycle
45%
n Low Frequency Oscillator for Burst Mode Dimming
e Burst frequency
fid Temp. stability
n Min. burst duty
o Max. burst duty
C Analog Dimming Control
OB3328 DDIM =0V
OB3328N DDIM=0V
OB3328 DDIM >3V
OB3328N DDIM>3.25
180 200 220
-
400 -
-
10 -
100
-
100 -
10
Hz
PPM/ oC
%
%
t Min. CS reference Voltage
V_ref_dim ADIM= 0V
h Max. CS reference Voltage
V_ref_dim ADIM> 3V
rig External LPWM Dimming Control
-
0.5 -
V
-
1.25 -
V
External LPWM duty
10 -
100 %
-B high
External LPWM Logic input level
n low
2.0
V
0.8
V
O Error Amplifier
Reference voltage
VREF_PK
1.2 1.25 1.3 V
© On-Bright Electronics
-6-
Confidential
OB_DO C_DS_2800
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