LT1071CT#PBF Linear Technology, LT1071CT#PBF Datasheet - Page 9

• Manufacturer Part Number: LT1071CT#PBF
• Description: IC SWITCH REG 2.5A HIEFF TO220-5
• Manufacturer: Linear Technology
• Type: Step-Down (Buck), Step-Up (Boost), Inverting, Cuk, Flyback, Forward Converterr

Specifications of LT1071CT#PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.25 ~ 60 V
• Current - Output: 2.5A
• Frequency - Switching: 40kHz
• Voltage - Input: 3 ~ 60 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Through Hole
• Package / Case: TO-220-5 (Bent and Staggered Leads)
• Power - Output: 100W
• Pin Count: 5 +Tab
• Input Voltage: 60V
• Output Voltage: 1.244 to 40V
• Switching Freq: 45kHz
• Output Current: 5.5A
• Package Type: TO-220
• Output Power (max): 100W
• Output Type: Adjustable
• Switching Regulator: Yes
• Line Regulation: 0.03%/V
• Mounting: Through Hole
• Input Voltage (min): 3V
• Operating Temperature Classification: Commercial
• Primary Input Voltage: 60V
• No. Of Outputs: 1
• No. Of Pins: 5
• Operating Temperature Range: 0°C To +100°C
• Msl: MSL 1 - Unlimited
• Supply Voltage Range: 3V To 40V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TYPICAL APPLICATIONS
– 12V
V
IN
OPTIONAL
**
FILTER
INPUT
*
REQUIRED IF INPUT LEADS
PULSE ENGINEERING 92113
L3
Negative to Positive Buck/Boost Converter
100 F
C4*
+
28V
V
GND
IN
LT1070
2"
V
IN
V
+
C
V
150 H
R3
2.2k
SW
FB
C1
0.22 F
L1**
C5*
100 F
*REQUIRED IF INPUT LEADS
U
1000 F
GND
1070/71 TA05
R2
1.24k
D1
LT1070
C2
OPTIONAL
V
(Note that maximum output currents are divided by 2 for the LT1071)
OUTPUT
Positive Current Boosted Buck Converter
IN
+
V
FILTER
C
L2
V
R3
680
SW
FB
C1
0.33 F
Q1
R1
11.3k
C3
470
2W
R2
D2
1k
V
12V
2A
2"
OUT
6
1.24k
R7
C3
0.47 F
V
1N4001
–
5 F
4
C4
V
D3
V
IN
LM308
COMP
+
7
†
+
8
R6
470
–
+
C6
0.002 F
200pF
2
3
GND
Positive to Negative Buck/Boost Converter
LT1070
R4
1.24k
V
•
N
IN
R5
5k
V
1:N
C
0.25
V
R3
5k
470
SW
1W
R5
FB
C1
0.1 F
•
R1
5k
†
R2
1.24k
L1**
200 H
10.7k
+
R1
+
D1
C2
5000 F
C5*
100 F
1070/71 TA19
**
*
1N914
LT1070/LT1071
REQUIRED IF INPUT LEADS
PULSE ENGINEERING 92113
C3
2 F
V
10V TO 30V
D2
IN
V
5V
10A
1000 F
D1
OUT
47
R4
C1
†
+
†
TO AVOID START-UP
PROBLEMS FOR INPUT
VOLTAGES BELOW 10V,
CONNECT ANODE OF D3
TO V
C1 MAY BE REDUCED FOR
LOWER OUTPUT CURRENTS.
C1
OUTPUTS, REDUCE R3 TO
1.5k, INCREASE C2 TO 0.3 F
AND REDUCE R6 TO 100 .
IN
(500 F)(I
AND REMOVE R5.
1070/71 TA09
R6
470
OUT
2"
V
– 12V
2A
) FOR 5V
OUT
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