lt1070hv Linear Technology Corporation, lt1070hv Datasheet - Page 11

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

PACKAGE
TYPICAL APPLICATIONS
+
(10.67 – 12.19)
0.320 – 0.350
0.420 – 0.480
(8.13 – 8.89)
*REQUIRED IF INPUT LEADS 2"
20V TO 30V
C4*
100 F
(Reference LTC DWG # 05-08-1311)
V
OBSOLETE PACKAGE
IN
4-Lead TO-3 Metal Can
GND
LT1070
DESCRIPTION
V
IN
(19.30 – 19.69)
(29.90 – 30.40)
0.760 – 0.775
1.177 – 1.197
K Package
18
V
V
C
SW
FB
R3
1.5k
C2
0.15 F
(0.965 – 1.09)
0.038 – 0.043
72
0.470 TP
P.C.D.
R4
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.
(1.524 – 3.429)
D2
(16.64 – 19.05)
0.060 – 0.135
0.655 – 0.675
C3
0.47 F
(12.45 – 12.95)
0.490 – 0.510
U
0.167 – 0.177
(4.24 – 4.49)
U
0.151 – 0.161
(3.84 – 4.09)
R
DIA 2 PLC
R
•
1 N
K4(TO-3) 1098
(Note that maximum output currents are divided by 2 for the LT1071)
•
N = 1/3
D1
OPTIONAL
FILTER
+
10 H
L2
Flyback Converter
C1
2000 F
(9.906 – 10.541)
(11.684 – 12.700)
0.390 – 0.415
0.460 – 0.500
BSC
C4
200 F
R1
3.74k
R2
1.24k
(1.70)
0.067
V
5V
6A
OUT
V
0V
0V
IN
0
0
0
5-Lead Plastic TO-220 (Standard)
(Reference LTC DWG # 05-08-1421)
I
a
c
(0.711 – 0.965)
PRI
0.028 – 0.038
I
t =
V
(5.842 – 6.858)
(8.382 – 9.398)
0.230 – 0.270
0.330 – 0.370
SNUB
(I
0.260 – 0.320
(6.60 – 8.13)
b
d
PRI
V
SNUB
V
(3.734 – 3.937)
OUT
)(L
0.147 – 0.155
I
I
PRI
PRI
L
T Package
(14.478 – 15.748)
)
+ V
DIA
0.570 – 0.620
SEATING PLANE
CLAMP TURN-ON
I
(N)(V
F
PRI
(3.861 – 5.131)
0.152 – 0.202
SPIKE
N
IN
)
(17.78 – 18.491)
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
SECONDARY CURRENT
LT1070 SWITCH CURRENT
SNUBBER DIODE CURRENT
0.700 – 0.728
(3.429 – 4.191)
0.135 – 0.165
LT1070/LT1071
(4.191 – 4.572)
0.165 – 0.180
(15.75)
0.620
* MEASURED AT THE SEATING PLANE
TYP
1070/71 TA08
V
(2.413 – 2.921)
(3.937 – 4.953)
0.155 – 0.195*
(0.330 – 0.584)
0.095 – 0.115
OUT
0.013 – 0.023
(1.143 – 1.397)
0.045 – 0.055
11
N
T5 (TO-220) 0399
+ V
10701fe
F