LT1377CS8 查看數據表（PDF） - Linear Technology
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LT1377CS8 Datasheet PDF : 12 Pages
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LT1372/LT1377
TYPICAL APPLICATIONS N
Positive-to-Negative Converter with Direct Feedback
Dual Output Flyback Converter with Overvoltage Protection
+
ON
OFF
C3
0.0047µF
VIN
2.7V TO 16V
C1
22µF
4
S/S
5
VIN VSW 8
LT1372/LT1377
3
NFB
VC
GND
1
6, 7
T1*
D2
24
•
P6KE-15A
D3
1N4148
•
1
3
D1
MBRS130LT3
+ C4
47µF
R2
2.49k
1%
R3
2.49k
1%
–VOUT†
–5V
C2
0.047µF
R1
2k
*COILTRONICS CTX10-2 (407) 241-7876
†MAX IOUT
IOUT VIN
0.3A 3V
0.5A 5V
0.75A 9V
LT1372 • TA03
R2
R1
1.21k
13k
1%
1%
+ C1
22µF
2
OFF
ON
4
FB
S/S
VIN
2.7V TO 13V
5
VIN
VSW
8
MBRS140T3
T1*
2, 3
5
P6KE-20A •
+
1N4148
•4
6, 7
8
+
LT1372/LT1377
•
3
1
NFB
VC
GND
1
6, 7
MBRS140T3
C3
0.0047µF
C2
0.047µF
R3
2k
*DALE LPE-4841-100MB (605) 665-9301
VOUT
15V
C4
47µF
C5
47µF
–VOUT
R4 –15V
12.1k
1%
R5
2.49k
1%
LT1372 • TA04
90% Efficient CCFL Supply
Low Ripple 5V to – 3V “Cuk”† Converter
VIN
L1*
5V
2
3
C1
22µF
10V
1• •4
5
VIN
8
VSW
4
S/S
7 LT1372/LT1377 3
GND
NFB
6
GND S
1
VC
C2
47µF
16V
+
D1**
C5
0.0047µF
*SUMIDA CLS62-100L
**MOTOROLA MBR0520LT3
†PATENTS MAY APPLY
R4
2k
C4
0.047µF
VOUT
–3V
250mA
R1
1k
1%
C6
0.1µF
R2
4.99k
1%
C3
47µF
16V
LT1372 • TA05
VIN
4.5V
TO 30V +
10µF
C2
27pF
5
4
5mA MAX
LAMP
10
T1
3
21
C1
0.1µF
D1
1N4148
Q1
Q2
330Ω
2.7V TO
5.5V +
2.2µF
1N5818
5
L1
33µH
D2
1N4148
OFF
ON
4
S/S
VIN
8
VSW
LT1372/LT1377
GND
6, 7
2
VFB
VC
+1
2µF
562Ω*
10k
20k
DIMMING
22k
1N4148
0.1µF
OPTIONAL REMOTE
DIMMING
LT1372 • TA06
C1 = WIMA MKP-20
CCFL BACKLIGHT APPLICATION CIRCUITS
L1 = COILCRAFT DT3316-333
CONTAINED IN THIS DATA SHEET ARE
Q1, Q2 = ZETEX ZTX849 OR ROHM 2SC5001 COVERED BY U.S. PATENT NUMBER 5408162
T1 = COILTRONICS CTX 110609
AND OTHER PATENTS PENDING
* = 1% FILM RESISTOR
DO NOT SUBSTITUTE COMPONENTS
COILTRONICS (407) 241-7876
COILCRAFT (708) 639-6400
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of circuits as described herein will not infringe on existing patent rights.
11
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