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PDF OB3316 Data sheet ( Hoja de datos )
| Número de pieza | OB3316 | |
| Descripción | High Performance CCFL Controller | |
| Fabricantes | On-Bright | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de OB3316 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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OB3316
High Performance CCFL Controller Push pull
General Description
OB3316 is a high performance Cold Cathode
Fluorescent Lamp (CCFL) backlight controller IC
dedicated for use in push pull configuration. The
controller is designed to drive single or multiple
CCFLs in Liquid Crystal Display (LCD)
applications.
OB3316 converts unregulated DC input voltage to
the pseudo sinusoidal voltage and current
waveforms in required frequency, to ignite and
operate CCFL lamps.
OB3316 provides a high degree of design flexibility
by offering great programmability for key
parameters which includes operating frequency,
striking frequency, striking time, burst frequency
for dimming and soft-start time.
OB3316 offers variable dimming controls. Both
internal burst and external low frequency PWM
(LPWM) dimming methods are available for a wide
range of dimming control (10% to 100%). Further
more, analog dimming is provided through
external DC input control to achieve 40% to 100%
dimming range.
The highly integrated OB3316 provides complete
protection features covering IC Under Voltage
Lockout (UVLO), System supply brownout
protection, Output Over Voltage Protection (OVP)
and Lamp Fail Safe Functions (LFSF).
OB3316 is available in DIP16 and SOP16
packages.
Typical Application Circuit
Features
z Built-in burst and external LPWM for wide range
dimming control
z Analog dimming Control
z 0-3V DC voltage direct dimming without any
additional components
z High precision reference and frequency control
z Support single or multiple CCFLs
z Flexible user programmability:
External programmable constant operating
frequency
Programmable striking frequency and voltage
control
Programmable soft on/off timer
Programmable striking time control
Programmable internal burst mode frequency
control
z Comprehensive protection coverage:
IC supply under voltage lockout (UVLO)
System supply brownout protection
Output over voltage protection (OVP)
Lamp Fail Safe Functions (LFSF)
Applications
z LCD Monitor
z LCD TV
Notebook Computerzwww.DataSheet.co.kr
z LCD flat panel display for instrument, automobile
and handhold device
© On-Bright Electronics
-1-
Confidential
OB_DOC_DS_16A2
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
OB3316
High Performance CCFL Controller Push pull
Electrical Characteristics
VDDA=5V, ENA=5V, SVD=5V, RT=33Kohm, RI=110Kohm, CCMP=47nF, Dim=5V, CSTIME = 1uF, TA=25oC if
not otherwise noted.
Parameter
Symbol Condition
Min Typ Max
Unit
Current Consumption
Operating
VDDA UVLO
UVLO on
UVLO off
High Frequency Oscillator
Operating frequency
Striking frequency
Temp. stability
PWM max. duty
IVDD VS=CS=1V, CMP=2V, - 2.5
4
mA
Ramp VDDA form 5V
to 0V
Ramp VDDA form 0V
to 5V
3.9
4.1
V
V
FOP
CS=VS=1.25V,
CMP=2V
48 50
FSTK
VS=CS=0V, CMP=2V -
65
52
-
TA = 0 oC to 70 oC
- 200
-
- 45
-
KHz
KHz
PPM/
oC
%
Low Frequency Oscillator for Burst Mode Dimming
Burst frequency
www.DataSheet.co.kr
CBF=10nF, DIM=1.5V
Temp. stability
TA = 0 oC to 70 oC
180 200
- 400
Min. burst duty
Max. burst duty
Analog Dimming Control
Minimum Lamp Current reference
Voltage
Maximum Lamp Current
reference Voltage
External LPWM Dimming Control
CBF=10nF, DIM=0V
CBF=10nF, DIM=3V
- 10
- 100
BF>3.5V, DIM=0V
BF>3.5V, DIM=3V
0.45 0.5
1.2 1.25
220
-
-
-
0.55
1.3
Hz
PPM/
oC
%
%
V
V
External LPWM duty
BF<0.5V, DIM=LPWM 10 -
100
%
External LPWM Logic input level
high
low
2.0 -
--
-
0.8
V
V
Error Amplifier
Input voltage range
0 - VDD-1.6 V
© On-Bright Electronics
-5-
Confidential
OB_DOC_DS_16A2
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
Package Mechanical Data: DIP16
OB3316
High Performance CCFL Controller Push pull
Symbol
A
A1
A2
B
B1
C
D
E
E1
e
L
E2
www.DataSheet.co.kr
Dimensions In Millimeters
Min Max
3.710
4.310
0.510
3.200
3.600
0.380
0.570
1.524 (BSC)
0.204
0.360
18.800
19.200
6.200
6.600
7.320
7.920
2.540 (BSC)
3.000
3.600
8.400
9.000
Dimensions In Inches
Min Max
0.146
0.170
0.020
0.126
0.142
0.015
0.022
0.060 (BSC)
0.008
0.014
0.740
0.756
0.244
0.260
0.288
0.312
0.100 (BSC)
0.118
0.142
0.331
0.354
© On-Bright Electronics
- 11 -
Confidential
OB_DOC_DS_16A2
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet OB3316.PDF ] | |
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