参数资料
型号: LT1071CT#PBF
厂商: Linear Technology
文件页数: 11/12页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ TO220-5
标准包装: 50
类型: 降压(降压),升压(升压),反相,Cuk,回扫,正向转换器
输出类型: 可调式
输出数: 1
输出电压: 1.25 V ~ 60 V
输入电压: 3 V ~ 60 V
PWM 型: 电流模式
频率 - 开关: 40kHz
电流 - 输出: 2.5A
同步整流器:
工作温度: 0°C ~ 100°C
安装类型: 通孔
封装/外壳: TO-220-5 成形引线
包装: 管件
供应商设备封装: TO-220-5
产品目录页面: 1325 (CN2011-ZH PDF)
LT1070/LT1071
TYPICAL APPLICATIO N S
(Note that maximum output currents are divided by 2 for the LT1071)
Flyback Converter
CLAMP TURN-ON
V SNUB
SPIKE
PRIMARY FLYBACK VOLTAGE = OUT
L2
10 μ H
OPTIONAL
FILTER
C4
200 μ F
V IN
0V
a
b
LT1070/LT1071 SWITCH VOLTAGE
AREA “a” = AREA “b” TO MAINTAIN
V + V F
N
ZERO DC VOLTS ACROSS PRIMARY
(N)(V IN ) SECONDARY VOLTAGE
+
V IN
20V TO 30V
C4*
100 μ F
V IN
LT1070
V SW
R4
C3
0.47 μ F
D2
?
1 N
?
D1
+
N = 1/3
C1
2000 μ F
V OUT
5V
6A
R1
3.74k
0V
0
c
? I
d
V OUT + V F
I PRI
I PRI N
AREA “c” = AREA “d” TO MAINTAIN
ZERO DC VOLTS ACROSS SECONDARY
PRIMARY CURRENT
GND
V C
FB
R3
1.5k
C2
0.15 μ F
R2
1.24k
0
0
I PRI
I PRI
SECONDARY CURRENT
LT1070 SWITCH CURRENT
SNUBBER DIODE CURRENT
t = PRI
*REQUIRED IF INPUT LEADS ≥ 2"
PACKAGE DESCRIPTIO N
K Package
4-Lead TO-3 Metal Can
(Reference LTC DWG # 05-08-1311)
0.760 – 0.775
0.320 – 0.350
(19.30 – 19.69)
(8.13 – 8.89)
(I )(L L )
V SNUB
T Package
5-Lead Plastic TO-220 (Standard)
(Reference LTC DWG # 05-08-1421)
1070/71 TA08
0.060 – 0.135
0.147 – 0.155
0.165 – 0.180
(1.524 – 3.429)
0.390 – 0.415
(9.906 – 10.541)
(3.734 – 3.937)
DIA
(4.191 – 4.572)
0.045 – 0.055
(1.143 – 1.397)
0.420 – 0.480
(10.67 – 12.19)
0.230 – 0.270
(5.842 – 6.858)
(8.382 – 9.398)
0.038 – 0.043
(0.965 – 1.09)
1.177 – 1.197
0.460 – 0.500
(11.684 – 12.700)
0.570 – 0.620
(14.478 – 15.748)
0.330 – 0.370
0.700 – 0.728
(17.78 – 18.491)
0.620
(15.75)
TYP
(29.90 – 30.40)
0.655 – 0.675
0.470 TP
P.C.D.
(16.64 – 19.05)
0.151 – 0.161
(3.84 – 4.09)
DIA 2 PLC
SEATING PLANE
0.152 – 0.202
0.260 – 0.320 (3.861 – 5.131)
(6.60 – 8.13)
0.095 – 0.115
(2.413 – 2.921)
0.155 – 0.195*
(3.937 – 4.953)
18 °
72 °
0.167 – 0.177
(4.24 – 4.49)
R
0.490 – 0.510
(12.45 – 12.95)
R
K4(TO-3) 1098
BSC
0.067
(1.70)
0.028 – 0.038
(0.711 – 0.965)
0.135 – 0.165
(3.429 – 4.191)
0.013 – 0.023
(0.330 – 0.584)
T5 (TO-220) 0399
* MEASURED AT THE SEATING PLANE
OBSOLETE PACKAGE
10701fe
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.
11
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