lt1070hv Linear Technology Corporation, lt1070hv Datasheet - Page 8

• Manufacturer Part Number: lt1070hv
• Description: 5a And 2.5a High Efficiency Switching Regulators
• Manufacturer: Linear Technology Corporation

LT1070/LT1071
8
TYPICAL APPLICATIONS
– V
100 F
IN
V
C5*
IN
OPTIONAL INPUT
**
*
+
REQUIRED IF INPUT LEADS 2"
PULSE ENGINEERING 92112
FILTER
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
LT1070
Negative Current Boosted Buck Converter
V
R3
+
V
R5
SW
FB
C2
IN
V
C
V
R3
470
SW
D1
FB
C1
1 F
GND
Positive Buck Converter
Negative Buck Converter
C3
LT1070
V
IN
•
V
r
C
1:N
T1
V
R3
SW
FB
C1
•
R2
1.24k
**
3.74k
R2
1.24k
*
2N3906
D1
R1
D1
REQUIRED IF INPUT LEADS 2"
PULSE ENGINEERING 92113
200 H
Q1
L1**
+
1070/71 TA13
R1
R2
1.24k
1N914
C2
1 F
12k
100 H
R4
+
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
1070/71 TA12
– 0.6V
LOAD
4 H
C5
200 F
L2
R4
10
1070/71 TA14
100mA
MINIMUM
+
– 5.2V
4.5A
– V
5V
10A
5V
4.5A
C4
200 F
OUT
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