參數(shù)資料
型號: LT1786FCS
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: Isolated Flyback Switching Regulator with 9V Output
中文描述: 0.1 A FLUORESCENT LIGHT CONTROLLER, 240 kHz SWITCHING FREQ-MAX, PDSO16
封裝: 0.150 INCH, PLASTIC, SO-16
文件頁數(shù): 2/20頁
文件大?。?/td> 350K
代理商: LT1786FCS
2
LT1786F
ABSOLUTE
AXI
U
RATIU
W
V
CC
........................................................................... 7V
BAT, Royer, BULB .................................................. 30V
CCFL V
SW
............................................................... 60V
Shutdown ................................................................. 6V
I
CCFL
Input Current .............................................. 10mA
DIO Input Current (Peak, <100ms).................... 100mA
Digital Inputs .............................. –0.3V to (V
CC
+ 0.3V)
Digital Outputs............................ –0.3V to (V
CC
+ 0.3V)
DAC Output Voltage..................... –15V to (V
CC
+ 0.3V)
Junction Temperature (Note 1)............................ 100
°
C
Operating Ambient Temperature Range..... 0
°
C to 70
°
C
Storage Temperature Range ................ –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)................. 300
°
C
W
W
LT1786FCS
ORDER PART
NUMBER
PACKAGE/ORDER I
FOR
ATIO
W
U
U
Consult factory for Industrial and Military grade parts.
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CCFL PGND
I
CCFL
DIO
CCFL V
C
AGND
SHDN
SMBSUS
ADR
CCFL V
SW
BULB
BAT
ROYER
V
CC
I
OUT
SCL
SDA
T
JMAX
= 100
°
C,
θ
JA
= 100
°
C/W
ELECTRICAL CHARACTERISTICS
T
A
= 25
°
C, V
CC
= SHUTDOWN = SMBSUS = SCL = SDA = 3.3V, BAT = Royer = BULB = 12V, I
CCFL
= CCFL V
SW
= Open,
DIO = I
OUT
= GND, CCFL V
C
= 0.5V, unless otherwise specified.
SYMBOL
I
Q
ISUS
PARAMETER
Supply Current
SMBSUS Supply Current
CONDITIONS
3V
V
CC
6.5V, I
OUT
= 0
μ
A
SMBSUS = 0V or Command Code Bit 7 = 1,
CCFL V
C
= Open (Note 2)
SHUTDOWN = 0V, CCFL V
C
= Open (Note 2)
SHUTDOWN = 0V, CCFL V
C
= Open
MIN
TYP
6
40
MAX
9.5
100
UNITS
mA
G
G
μ
A
I
SHDN
SHUTDOWN Supply Current
SHUTDOWN Input Bias Current
SHUTDOWN Threshold Voltage
Switching Frequency
G
150
5
0.85
200
200
85
85
70
300
10
1.2
225
240
μ
A
μ
A
V
kHz
kHz
%
%
G
0.45
175
160
80
75
60
f
Measured at CCFL V
SW
, I
SW
= 50mA,
I
CCFL
= 100
μ
A, CCFL V
C
= Open
Measured at CCFL V
SW
G
DC(MAX)
Maximum Switch Duty Cycle
G
BV
Switch Breakdown Voltage
Switch Leakage Current
Measured at CCFL V
SW
V
SW
= 12V, Measured at CCFL V
SW
V
SW
= 30V, Measured at CCFL V
SW
3V
V
CC
6.5V
V
20
40
μ
A
μ
A
V
V
mV
I
CCFL
Summing Voltage
0.425
0.385
0.465
0.465
5
0.505
0.555
15
G
I
CCFL
Summing Voltage for
Input Programming Current
CCFL V
C
Offset Sink Current
CCFL V
C
Source Current for
I
CCFL
Programming Current
CCFL V
C
to DIO Current Servo Ratio
CCFL V
C
Low Clamp Voltage
CCFL V
C
High Clamp Voltage
CCFL V
C
Switching Threshold
CCFL High-Side Sense Servo Current
I
CCFL
= 0
μ
A to 100
μ
A
CCFL V
C
= 1.5V, Positive Current Measured into Pin
I
CCFL
= 25
μ
A, 50
μ
A, 75
μ
A, 100
μ
A,
CCFL V
C
= 1.5V
DIO = 5mA out of Pin, Measure I(V
C
) at CCFL V
C
= 1.5V
V
BAT
– V
BULB
= BULB Protect Servo Voltage
I
CCFL
= 100
μ
A
CCFL V
SW
DC = 0%
I
CCFL
= 100
μ
A, I(V
C
) = 0
μ
A at CCFL V
C
= 1.5V
–5
4.70
5
15
5.20
μ
A
G
4.95
μ
A/
μ
A
G
94
99
0.1
2.1
0.95
1.00
104
0.3
2.4
1.3
1.07
μ
A/mA
G
V
V
V
A
G
1.7
0.6
0.93
G
G
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