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AP3068 Arkusz danych(PDF) 8 Page - BCD Semiconductor Manufacturing Limited

Numer części AP3068
Szczegółowy opis  WHITE LED DRIVER FOR LCD PANEL BACKLIGHT
PDF  15 Pages
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Producent  BCDSEMI [BCD Semiconductor Manufacturing Limited]
Strona internetowa  http://www.bcdsemi.com
Logo BCDSEMI - BCD Semiconductor Manufacturing Limited

AP3068 Arkusz danych(HTML) 8 Page - BCD Semiconductor Manufacturing Limited

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Preliminary Datasheet
WHITE LED DRIVER FOR LCD PANEL BACKLIGHT
AP3068
May. 2010
Rev. 1.3
BCD Semiconductor Manufacturing Limited
8
Electrical Characteristics (Continued)
VIN =12V, VDD=5V, TA=25°C, unless otherwise specified.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
CURRENT SINK SECTION
Input Voltage
VDD
4.2
5.5
V
Quiescent Current
IQ
No Load
0.5
1
mA
ISET Reference Voltage
VISET
1.17
1.194
1.218
V
Output/ISET Current Multiplication
Ratio
k
370
400
430
VCHX=0.5V
23
45
VCHX=1V
65
70
Maximum
Output
Current
per
Channel
ICHX-MAX
VCHX=1.5V
110
120
mA
Current
Matching
Accuracy
Between Each Channel
ICH-MATCH
ICHX=60mA
VCHX=1V
-1.5
1.5
%
ICHX=20mA
0.45
ICHX=60mA
0.8
Current Sink Saturation Voltage per
Channel
VCHX
ICHX=100mA
1.2
V
Output Current Line Regulation
∆I
CH/
(ICH×∆VDD)
VDD=4.2V
to
5.5V
2
%/V
Output Current Load Regulation
VCHX=0.5V to
2.8V
4
%
LED Open Detecting Voltage
VD_OPEN
3
V
ENABLE AND PWM DIMMING SECTION
EN High Level Threshold Voltage
VIH_EN
2.0
V
EN Low Level Threshold Voltage
VIL_EN
0.5
V
PWM
High
Level
Threshold
Voltage
VIH_PWM
1.8
V
PWM
Low
Level
Threshold
Voltage
VIL_PWM
0.8
V
PWM Dimming Frequency
fPWM
0.1
25
kHz
Minimum PWM Duty Cycle
DPWM_MIN
0.35
%
TOTAL DEVICE
Thermal Shutdown Temperature
TOTSD
160
ºC
Thermal Shutdown Hysteresis
THYS
20
ºC



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