参数资料
型号: LT1082M
厂商: Linear Technology Corporation
英文描述: Parallel-Load 8-Bit Serial Shift Registers 16-SSOP 0 to 70
中文描述: 1A条高电压,效率开关稳压器
文件页数: 5/12页
文件大小: 250K
代理商: LT1082M
5
LT1082
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
Isolated Mode Flyback
Reference Voltage
TEMPERATURE (°C)
F
25
24
23
22
21
20
19
18
17
16
15
1082 G09
–75 –50
50
100
25
150 175
–25 0
75
125
R
FB
= 3k
R
FB
= 6k
R
FB
= 10k
Supply Current vs Input Voltage**
SUPPLY VOLTAGE (V)
0
S
μ
A
200
160
120
80
40
0
30
50
80
1082 G15
10
20
40
60
70
V
C
= 50mV
V
C
= 0V
Supply Current vs Supply Voltage
(Shutdown Mode)
INPUT VOLTAGE (V)
0
S
20
40
60
80
1082 G14
14
13
12
11
10
9
8
7
6
5
4
3
2
10
30
50
70
90% DUTY CYCLE
50% DUTY CYCLE
10% DUTY CYCLE
0% DUTY CYCLE
**UNDER VERY LOW OUTPUT CURRENT CONDITIONS,
DUTY CYCLE FOR MOST CIRCUITS WILL APPROACH
10% OR LESS.
Feedback Bias Current vs
Temperature
800
TEMPERATURE (°C)
F
1082 G12
700
600
500
400
300
200
100
0
–75 –50
50
100
25
150 175
–25 0
75
125
Normal/Feedback Mode
Threshold on Feedback Pin
TEMPERATURE (°C)
V
C
750
725
700
675
650
625
600
575
550
525
500
1082 G16
–75 –50
50
100
25
150 175
–25 0
75
125
–24
–22
–20
–18
–16
–14
–12
–10
–8
–6
–4
V
C
μ
A
FEEDBACK PIN VOLTAGE
(AT THRESHOLD)
FEEDBACK PIN CURRENT
(AT THRESHOLD)
V
C
PIN VOLTAGE (mV)
S
μ
A
200
180
160
140
120
100
80
60
40
20
0
1082 G17
0
10
50
70
40
90 100
20 30
60
80
–55°C
T
J
125°C
T
J
= 150°C
Shutdown Mode Supply Current
Reference Voltage and Switching
Frequency vs Temperature
TEMPERATURE (°C)
F
70
65
60
55
50
45
1082 G11
1.250
1.245
1.240
1.235
1.230
1.225
R
–75 –50
50
100
25
150 175
–25 0
75
125
FREQ
V
REF
INPUT VOLTAGE (V)
0
R
5
4
3
2
1
0
–1
–2
–3
–4
–5
20
40
50
1082 G10
10
30
60
70
80
T
J
= 25°C
T
J
= –55°C
T
J
= 150°C
Line Regulation
SWITCH CURRENT (A)
D
100
90
80
70
60
50
40
30
20
10
0
1082 G13
0
0.2
1.0
1.4
0.8
1.8 2.0
0.4 0.6
1.2
1.6
* AVERAGE SUPPLY CURRENT
= I
I
Q
= QUIESCENT CURRENT, DC = DUTY CYCLE,
I
SW
= SWITCH CURRENT
+ DC(2.9 + 10
–2
I
+ 10
–5
I
2
)
Driver Current* vs Switch Current
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