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LT1070HVIT#PBF

P1-P3P4-P6P7-P9P10-P12
10
LT1070/LT1071
10701fe
TYPICAL APPLICATIONS
U
(Note that maximum output currents are divided by 2 for the LT1071)
Current Boosted Boost Converter
+
R4
1070/71 TA11
R3
R2
1.24k
R1
27k
C2
C3
I
N
C1
V
OUT
28V
4A
D2
D1
V
SW
V
C
V
IN
LT1070
GND
V
IN
16V TO 24V
FB
+
R1
27k
R
O
(MINIMUM
LOAD)
R2
1.24k
1070/71 TA15
R3
3.3k
C2
0.22µF
C3
10µF
+
+
C1
1000µF
+
C4*
470µF
V
IN
–15V
V
OUT
–28V
1A
L1
200µH
D2
D1
V
SW
V
C
V
IN
LT1070
GND
FB
*REQUIRED IF INPUT LEADS ≥ 2"
+
R4
680Ω
1W
1070/71 TA10
1
L1
N = 5
TOTAL
INDUCTANCE = 4mH
INTERLEAVE PRIMARY
AND SECONDARY FOR
LOW LEAKAGE
INDUCTANCE
R3
10k
R2
1.24k
R1
98k
C2
0.047µF
C3
0.68µF
C1
200µF
V
OUT
100V
300mA
D2
D1
V
SW
V
C
V
IN
LT1070
GND
V
IN
15V
FB
+
Voltage Boosted Boost Converter
Negative Boost Regulator
Negative Input/Negative Output Flyback Converter
+
R5
R4
1.24k
C2
V
SW
Q1
2N3906
•
•
V
IN
C3
C1
–V
OUT
1070/71 TA17
R6
R1*
T1
1:N
LT1070/LT1071
GND V
C
FB
–V
IN
R3
1k
R2
5k
+
*R1 =
V
OUT
– 1.6V
200µA
External Current Limit
External Current Limit
1070/71 TA04
LT1070/LT1071
V
C
GND
D1
V
X
R1
500Ω
R2
= 2V
1070/71 TA06
R2
V
IN
R1
1k
C2
C1
1000pF
NOTE THAT THE LT1070/LT1071
GND PIN IS NO LONGER COMMON
TO V
IN
–
V
SW
V
C
R
S
V
IN
LT1070/LT1071
GND
FB
+
Q1
10701fe
11
LT1070/LT1071
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 its circuits as described herein will not infringe on existing patent rights.
TYPICAL APPLICATIONS
U
(Note that maximum output currents are divided by 2 for the LT1071)
T5 (TO-220) 0399
0.028 – 0.038
(0.711 – 0.965)
0.067
(1.70)
0.135 – 0.165
(3.429 – 4.191)
0.700 – 0.728
(17.78 – 18.491)
0.045 – 0.055
(1.143 – 1.397)
0.095 – 0.115
(2.413 – 2.921)
0.013 – 0.023
(0.330 – 0.584)
0.620
(15.75)
TYP
0.155 – 0.195*
(3.937 – 4.953)
0.152 – 0.202
(3.861 – 5.131)
0.260 – 0.320
(6.60 – 8.13)
0.165 – 0.180
(4.191 – 4.572)
0.147 – 0.155
(3.734 – 3.937)
DIA
0.390 – 0.415
(9.906 – 10.541)
0.330 – 0.370
(8.382 – 9.398)
0.460 – 0.500
(11.684 – 12.700)
0.570 – 0.620
(14.478 – 15.748)
0.230 – 0.270
(5.842 – 6.858)
BSC
SEATING PLANE
* MEASURED AT THE SEATING PLANE
K4(TO-3) 1098
72°
18°
0.490 – 0.510
(12.45 – 12.95)
R
0.470 TP
P.C.D.
0.167 – 0.177
(4.24 – 4.49)
R
0.151 – 0.161
(3.84 – 4.09)
DIA 2 PLC
0.655 – 0.675
(16.64 – 19.05)
1.177 – 1.197
(29.90 – 30.40)
0.038 – 0.043
(0.965 – 1.09)
0.060 – 0.135
(1.524 – 3.429)
0.320 – 0.350
(8.13 – 8.89)
0.420 – 0.480
(10.67 – 12.19)
0.760 – 0.775
(19.30 – 19.69)
Flyback Converter
1070/71 TA08
*REQUIRED IF INPUT LEADS ≥ 2"
a
b
V
SNUB
C2
0.15µF
R3
1.5k
R1
3.74k
R2
1.24k
C4*
100µF
V
IN
20V TO 30V
V
OUT
5V
6A
V
SW
V
C
V
IN
LT1070
GND
FB
C3
0.47µF
C1
2000µF
D2
D1
R4
1N
•
•
+
+
PRIMARY FLYBACK VOLTAGE =
LT1070/LT1071 SWITCH VOLTAGE
AREA “a” = AREA “b” TO MAINTAIN
ZERO DC VOLTS ACROSS PRIMARY
SECONDARY VOLTAGE
AREA “c” = AREA “d” TO MAINTAIN
ZERO DC VOLTS ACROSS SECONDARY
PRIMARY CURRENT
V
OUT
+ V
F
N
0V
V
IN
CLAMP TURN-ON
SPIKE
C4
200µF
L2
10µH
OPTIONAL
FILTER
c
∆I
d
V
OUT
+ V
F
(N)(V
IN
)
I
PRI
0V
0
LT1070 SWITCH CURRENT
SNUBBER DIODE CURRENT
I
PRI
I
PRI
t =
(I
PRI
)(L
L
)
V
SNUB
SECONDARY CURRENT
I
PRI
N
0
0
N = 1/3
PACKAGE DESCRIPTION
U
OBSOLETE PACKAGE
T Package
5-Lead Plastic TO-220 (Standard)
(Reference LTC DWG # 05-08-1421)
K Package
4-Lead TO-3 Metal Can
(Reference LTC DWG # 05-08-1311)
12
LT1070/LT1071
10701fe
LT/CPI 0202 1.5K REV E • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1989
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
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Forward Converter
Totally Isolated Converter
1070/71 TA07
R4
1.5k
5k
500Ω
N = 0.875 = 7:8
FOR V
OUT
= 15V
*REQUIRED IF INPUT LEADS ≥ 2"
R2
SECONDARY VOLTAGE
0V
V
OUT
t
OFF
t
ON
≈16V
(N)(V
IN
)
C2
0.01µF
C5*
100µF
V
IN
5V
V
SW
V
C
V
IN
LT1070/LT1071
GND
FB
+
C3
0.47µF
N
D1
1:N
•
•
N
+
L1
10µF
L2
10µF
15V
COM
+
C4
500µF
C1
500µF
+
+
C6
200µF
C5
200µF
OPTIONAL
OUTPUT FILTER
+
–15V
SWITCH VOLTAGE
V
F
(DIODE FORWARD VOLTAGE)
0V
V
IN
+
R3
R6
330Ω
R5
1Ω
Q1
C3
C4
V
SW
L1
70µH
•
••
V
IN
C2
D3
C1
2000µF
D1
V
OUT
5V
6A
R4
T1
LT1070
GND V
C
FB
V
IN
20V TO 30V
D4
IMN
D2
1070/71 TA18
R1
3.74k
R2
1.24k
TYPICAL APPLICATIONS
U
(Note that maximum output currents are divided by 2 for the LT1071)
P1-P3P4-P6P7-P9P10-P12

LT1070HVIT#PBF

Mfr. #:
Buy LT1070HVIT#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 5A & 2.5A Hi Eff Sw Regs
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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