LT1071 Linear Technology, LT1071 Datasheet - Page 8

• Manufacturer Part Number: LT1071
• Description: 5A and 2.5A High Efficiency Switching Regulators
• Manufacturer: Linear Technology

LT1070/LT1071
8
TYPICAL APPLICATIONS
– V
IN
100 F
V
C5*
OPTIONAL INPUT
IN
**
*
+
FILTER
REQUIRED IF INPUT LEADS 2"
PULSE ENGINEERING 92112
L3
2.2 F
+
C3
+
U
GND
– 20V
D3
V
IN
LT1070
100 F
GND
V
IN
C3
V
(Note that maximum output currents are divided by 2 for the LT1071)
C
Negative Current Boosted Buck Converter
LT1070
V
R3
+
R5
V
SW
C2
FB
IN
V
C
V
R3
470
SW
FB
D1
C1
1 F
GND
Positive Buck Converter
Negative Buck Converter
C3
LT1070
V
•
IN
V
r
1:N
C
T1
V
R3
SW
C1
FB
•
R2
1.24k
**
3.74k
2N3906
R2
1.24k
*
D1
R1
D1
REQUIRED IF INPUT LEADS 2"
PULSE ENGINEERING 92113
200 H
Q1
L1**
+
1070/71 TA13
R1
R2
1.24k
1N914
12k
C2
1 F
R4
100 H
+
D2
L1**
+
C2
1000 F
2N3906
OPTIONAL
+
OUTPUT
FILTER
C1
Q1
R1 =
4 H
L2
C4
1000 F
R1
4.64k
OPTIONAL
OUTPUT
FILTER
MINIMUM
LOAD = 10mA
V
OUT
1mA
– 0.6V
1070/71 TA12
LOAD
4 H
C5
200 F
L2
R4
10
1070/71 TA14
100mA
MINIMUM
+
– V
5V
10A
– 5.2V
4.5A
5V
4.5A
C4
200 F
OUT