LT1372CN8 Linear Technology, LT1372CN8 Datasheet - Page 11

• Manufacturer Part Number: LT1372CN8
• Description: IC SWTCHNG REG 1.5A HI-EFF 8-DIP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck), Step-Up (Boost), Inverting, Cuk, Flyback, Forward Converterr

Specifications of LT1372CN8

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.25 ~ 30 V
• Current - Output: 1.5A
• Frequency - Switching: 500kHz
• Voltage - Input: 2.7 ~ 25 V
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

22 F
TYPICAL APPLICATIONS
0.0047 F
10V
V
C1
5V
IN
OFF
C3
**
+
*
†
Positive-to-Negative Converter with Direct Feedback
ON
+
SUMIDA CLS62-100L
MOTOROLA MBR0520LT3
PATENTS MAY APPLY
4
C1
22 F
Low Ripple 5V to – 3V “Cuk”
5
4
7
6
S/S
LT1372/LT1377
0.0047 F
V
V
S/S
GND
GND S
2.7V TO 16V
C
1
IN
R1
2k
LT1372/LT1377
C2
0.047 F
V
V
C5
IN
IN
5
GND
V
NFB
SW
6, 7
V
NFB
SW
V
C
8
3
*COILTRONICS CTX10-2 [phone]
†
8
3
1
MAX I
0.75A
0.3A
0.5A
I
OUT
2
1
R4
2k
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.
D2
P6KE-15A
D3
1N4148
+
C4
0.047 F
D1**
•
OUT
47 F
16V
C2
L1*
V
3V
5V
9V
MBRS130LT3
IN
•
3
4
U
2
1
•
†
T1*
Converter
•
D1
4
3
R1
1k
1%
R2
4.99k
1%
N
+
+
C3
47 F
16V
R2
2.49k
1%
R3
2.49k
1%
C4
47 F
LT1372 • TA05
LT1372 • TA03
C6
0.1 F
V
–3V
250mA
–V
–5V
OUT
OUT
†
0.0047 F
OFF
2.7V TO
Q1, Q2 = ZETEX ZTX849 OR ROHM 2SC5001
DO NOT SUBSTITUTE COMPONENTS
COILTRONICS [phone]
COILCRAFT [phone]
TO 30V
OFF
Dual Output Flyback Converter with Overvoltage Protection
+
4.5V
5.5V
C1 = WIMA MKP-20
C3
L1 = COILCRAFT DT3316-333
T1 = COILTRONICS CTX 110609
V
* = 1% FILM RESISTOR
IN
ON
ON
1.21k
C1
22 F
1%
R2
+
+
4
4
S/S
2.2 F
FB
LT1372/LT1377
V
10 F
C
S/S
1
GND
2
R3
2k
LT1372/LT1377
C2
0.047 F
6, 7
2.7V TO 13V
V
90% Efficient CCFL Supply
IN
*DALE LPE-4841-100MB [phone]
5
GND
5
V
V
V
330
NFB
IN
+
IN
SW
27pF
6, 7
5
V
V
1N5818
V
C2
C
SW
1
FB
8
3
2 F
4
8
2
1N4148
CCFL BACKLIGHT APPLICATION CIRCUITS
CONTAINED IN THIS DATA SHEET ARE
COVERED BY U.S. PATENT NUMBER 5408162
AND OTHER PATENTS PENDING
P6KE-20A
Q1
OPTIONAL REMOTE
3
13k
1%
R1
10
LT1372/LT1377
DIMMING
5mA MAX
2, 3
6, 7
0.1 F
LAMP
C1
2
•
22k
1N4148
T1*
L1
33 H
MBRS140T3
MBRS140T3
•
•
Q2
5
4
8
1
562 *
1
20k
DIMMING
T1
+
+
R4
12.1k
1%
R5
2.49k
1%
10k
D2
1N4148
C4
47 F
C5
47 F
0.1 F
11
LT1372 • TA06
LT1372 • TA04
D1
1N4148
V
15V
–V
–15V
OUT
OUT