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부품번호 | DIT8545 기능 |
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기능 | Ceratrans Driver | ||
제조업체 | Interpion semiconductor | ||
로고 | |||
DIT8545
Ceratrans Driver for LCD Backlight
DESCRIPTIONS
DIT8545 is an advanced LCD backlight inverter con-
trol IC based on the piezo-ceramic transformer. The
new control scheme employing the variable fr e-
quency and duty control achieves the very high effi-
ciency over 90%. In this control scheme, the soft
start and zero voltage switching functions are aut o-
matically obtained. DIT8545 can realize the CCFL
backlight inverter with small size and low cost.
www.DataSheet4U.com
FEATURES
- Soft start function
- Programmable Operating Frequency
- Analog Dimming Control Function
- Burst Dimming Control
- ON/OFF Control Function
- Open Lamp Protection
- 10SSOP Package
BLOCK DIAGRAM
ORDER INFORMATION
Device
DIT8545
Package Operating Temp
10SSOP-225 -25OC ~ +85OC
CT
1
RT
2
EI
3
EO
4
TONCTL
5
UVLO
VCC
10
CT
RT VFVCO
TONCT
L
Driver
Bandgap Bias
Reference Generator
Latch
OUT
9
GND
8
ON/OFF
7
PROT
6
Aug. 2002
WWW.INTERPIONSEMI.COM
-1-
DIT8545
Ceratrans Driver for LCD Backlight
www.DataSheet4U.com
ELECTRICAL CHARACTERISTICS
(Ta = 25OC, VCC=5V, RT=13.8K CT=1.5V, PROT=0V unless otherwise specified.)
CHARACTERISTICS SYMBOL
CONDITIONS
Operating Frequency
Fosc CT=470pF
Frequency Change With
Supply Voltage
Dfosc VCC=5V to 12V
Minimum Duty Ratio
Dmin TONCTL = 0V
Maximum Duty Ratio
Dmax TONCTL = 3V
TONCTL Input Bias Current Ib(TON) TONCTL = 0V
[ UVLO Section ]
Upper Threshold Voltage
VthH VCC Variation
Lower Threshold Voltage
VthL VCC Variation
UVLO Hysteresis Voltage
[ ON/OFF Section ]
Vhys VCC Variation
ON/OFF Logic High Voltage Von/off -
ON/OFF Input Bias Current Ib(on/off) ON/OFF=2V
[ Error Amplifier Section]
Erramp Input Bias Current
Ib(EI)
Inverting Reference Voltage Vfb
Erramp Output Source Cur-
rent
Erramp Output Sink Current
Isource
Isink
Erramp Output High Voltage Vhigh
Erramp Output Low Voltage Vlow
[ Open Lamp Protection Section ]
Protection Input Bias Cur-
rent
Protection Input Voltage
Iprot
Vprot
PROT=1.5V
-
MIN TYP
120 135
MAX UNIT
150 kHz
- 0.3 1.5 %/V
10 20 30 %
55 65 75 %
- -0.1 -1 uA
2.6 2.8 2.95
2.4 2.6
2.8
0.1 0.2
0.4
V
V
V
1 1.3 1.8
V
5 20
50 uA
-0.1
1.220 1.260
-1
1.300
3 10
30
5 15
3.2 4.2
- 0.1
40
4.5
0.4
uA
V
mA
mA
V
V
- 1 40 uA
1 1.35 1.60
V
Aug. 2002
WWW.INTERPIONSEMI.COM
-4-
4페이지 DIT8545
Ceratrans Driver for LCD Backlight
ELECTRICAL DIAGRAMS
www.DataSheet4U.com
Duty(%)
70
VTCTRL vs DUTY
CT=470p
60 RT=13.8Kohm
50
40
30
20
10
0
0.0 0.5 1.0 1.5
VTCTRL(V)
Fig.1 : VTCTRL vs. DUTY
Frequency(kHz)
200
VTCTRL vs Frequency
180
CT=470p
160 RT=13.8Kohm
140
120
100
80
60
40
20
0
0.0 0.5 1.0 1.5
VTCTRL(V)
Fig.2 : VTCTRL vs. Frequency
2.0
2.0
Aug. 2002
WWW.INTERPIONSEMI.COM
-7-
7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ DIT8545.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
DIT8545 | Ceratrans Driver | Interpion semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |