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LT1074CK bảng dữ liệu(PDF) 7 Page - Linear Technology

tên linh kiện LT1074CK
Giải thích chi tiết về linh kiện  Step-Down Switching Regulator
PDF  16 Pages
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nhà sản xuất  LINER [Linear Technology]
Trang chủ  http://www.linear.com
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LT1074CK bảng dữ liệu(HTML) 7 Page - Linear Technology

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background image
LT1074/LT1076
7
Reference Shift with Ripple
Voltage
Feedback Pin Frequency Shift
Supply Current (Shutdown)
Reference Voltage vs
Temperature
Switch “On” Voltage
Error Amplifier Phase and GM
Switching Frequency vs
Temperature
Current Limit vs Temperature*
TYPICAL PERFOR A CE CHARACTERISTICS
INPUT VOLTAGE (V)
0
0
50
100
150
200
250
300
30
50
60
LT1074•TPC13
10
20
40
JUNCTION TEMPERATURE (
°C)
–50
2.19
2.20
2.21
2.22
2.23
2.24
2.25
–25
0
25
50
LT1074•TPC14
2.18
2.17
75
100 125 150
0
3.0
2.5
2.0
1.5
1.0
0.5
12
3
LT1074•TPC28
4
56
SWITCH CURRENT (A)
T = 25
°C
j
LT1074
LT1076
SQUARE
WAVE
PEAK-TO-PEAK RIPPLE AT FB PIN (mV)
0
–80
–70
–60
–50
–40
–30
20
20 40
60 80
LT1074•TPC16
100 120 140 160 180 200
–20
–10
0
10
TRI WAVE
FREQUENCY (Hz)
8k
1k
100k
1M
10M
0
10k
1k
2k
3k
4k
5k
6k
7k
200
150
100
50
0
–50
θ
M
G
–100
–150
–200
LT1074•TPC17
JUNCTION TEMPERATURE (
°C)
–50
80
95
100
105
110
115
120
–25
0
25
50
LT1074•TPC18
90
85
75
100 125 150
FEEDBACK PIN VOLTAGE (V)
0
0
1.0
1.5
3.0
LT1074•TPC19
0.5
2.0
2.5
20
160
40
60
80
100
120
140
–55
°C
25
°C
150
°C
JUNCTION TEMPERATURE (
°C)
1
2
3
4
5
6
7
LT1074•TPC22
8
0
–50 –25
0
25
50
75
100 125 150
*MULTIPLY CURRENTS BY 0.4 FOR LT1076
I
PIN OPEN
LIM
R
= 10k
Ω
LIM
R
= 5k
Ω
LIM



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