http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




On-Bright
On-Bright


OB3309

Highly Integrated U Type CCFL Backlight Controller


No Preview Available !

OB3309 pdf
OB3309
Highly Integrated U Type CCFL Backlight Controller
Product Specification
GENERAL DESCRIPTION
OB3309 is a highly integrated and high
performance U-type Cold Cathode Fluorescent
Lamp (CCFL) controller optimized for LCD display
backlight application. Comprehensive protection
functions are integrated, thus it provides a cost
effective yet high reliability LCD backlight solution.
Operating in push pull configuration, OB3309
converts DC input voltage to the pure sinusoidal
voltage and current waveforms, to ignite and
operate CCFL lamps.
It provides a high degree of design flexibility by
offering great programmability for key parameters
which include operating frequency, striking
frequency, striking time, dimming polarity, burst
dimming frequency, soft-start time, and soft on/off
time for burst dimming.
Various dimming modes control and dimming
polarity programmability are offered. Both internal
burst and external low frequency PWM (LPWM)
dimming methods are available for a wide range of
dimming control. Analog dimming is also provided
through external DC input control to achieve wide
dimming range.
The highly integrated OB3309 provides complete
protection features covering output over voltage,
over output current protection, lamp fail safe
function, and IC under voltage lockout.
The OB3309 is available in SOP-16 Packages.
TYPICAL APPLICATION
FEATURES
„ High performance push pull topology
„ Optimized for U type CCFL solution
„ Adjustable dimming polarity
„ Adjustable striking frequency & time
„ Flexible Dimming mode Control:
| Analog dimming control
| Internal burst dimming control
| External burst (LPWM) dimming control
„ Adjustable minimum duty for internal burst
dimming
„ Adjustable minimum reference voltage for
analog dimming
„ 0-2V DC voltage direct dimming control
without external circuits
„ Comprehensive Protection Coverage:
| Output over voltage protection (OVP)
| Output over current protection (OCP)
| Open lamp protection and short lamp
protection
| Arcing protection
APPLICATIONS
„ LCD Monitor
„ LCD TV
„ Flat panel display
VIN
DIM
ENA
+5V
GND
1 ENA
2 RI
3 RT
4 DRC
5 BF/DMOD
6 POL
7 VDD
8 GATE1
DIM 16
STIME 15
CMP 14
CS 13
PRT 12
VS 11
GND 10
GATE2 9
OB3309
PRT
VS
PRT
VS
VS
Figure1. OB3309 Typical Application Schematic
©On-Bright Electronics
Confidential
-1-
Preliminary Datasheet
OB_DOC_DS_330900



No Preview Available !

OB3309 pdf
OB3309
Highly Integrated U Type CCFL Backlight Control
Absolute Maximum Ratings
Parameter
VDD Input Voltage to GND
CS to GND
I/O to GND
Operating Ambient Temp. TA
Operating Junction Temp. TJ
Min/Max Storage Temp. Tstg
Lead Temp. (10 Sec)
Value
7V
-1.5V to
VDD+0.3V
-0.3V to
VDD + 0.3V
-20 oC ~ 85oC
150oC
-55 oC ~150oC
260 oC
Note: Stresses beyond those listed under “absolute maximum
ratings” may cause permanent damage to the device. These
are stress ratings only, functional operation of the device at
these or any other conditions beyond those indicated under
“recommended operating conditions” is not implied. Exposure
to absolute maximum-rated conditions for extended periods
may affect device reliability.
Recommended Operating Range
Parameter
VDD Voltage
Operating Frequency
Value
4.5V to 5.5V
30K to 150KHz
Package Thermal Characteristics
Parameter
Value
Thermal resistance θJA (SOP) 85 oC /W
Ordering Information
Part Number
OB3309QP
OB3309QPA
Description
SOP16, pb-free in tube
SOP16, pb-free in T&R
Package Marking Information
©On-Bright Electronics
Confidential
-2-
Preliminary Datasheet
OB_DOC_DS_330900



Part Number OB3309
Description Highly Integrated U Type CCFL Backlight Controller
Maker On-Bright - On-Bright
Total Page 12 Pages
PDF Download
OB3309 pdf
Download PDF File
OB3309 pdf
View for Mobile




Featured Datasheets

Part Number Description Manufacturers PDF
OB33 4.0 mA output pad cell OB33
austriamicrosystems
PDF
OB3302 Cost Effective CCFL Controller OB3302
GreenEngine
PDF
OB3306 High Integrated LCD Monitor Backlight Inverter Controller OB3306
GreenEngine
PDF
OB3309 Highly Integrated U Type CCFL Backlight Controller OB3309
On-Bright
PDF
OB3316 High Performance CCFL Controller OB3316
On-Bright
PDF
OB3328 High Performance CCFL Controller OB3328
On-Bright
PDF


Part Number Start With

0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

site map

webmaste! click here

contact us

Buy Components