參數(shù)資料
型號: LT1508I
廠商: Linear Technology Corporation
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Power Factor and PWM Controller(Voltage Mode)
中文描述: 功率因數(shù)和PWM控制器(電壓模式)
文件頁數(shù): 5/16頁
文件大?。?/td> 337K
代理商: LT1508I
5
LT1508
TYPICAL PERFOR
M
A
CE CHARACTERISTICS
U
Reference Voltage
vs Temperature
Supply Current vs Supply Voltage
GTDR Rise and Fall Time
Start-Up Supply Current
vs Supply Voltage
M
OUT
Pin Characteristics
Frequency vs R
SET
and C
SET
GTDR1 Maximum Duty Cycle
vs R
SET
and C
SET
Multiplier Current
JUNCTION TEMPERATURE (
°
C)
–75
R
75
7.536
7.524
7.512
7.500
7.488
7.476
7.464
7.452
7.440
7.428
1508 G04
–50
150
–25
0
25
50
100 125
I
AC
(
μ
A)
0
I
M
μ
A
300
150
0
1508 G05
250
500
VA
OUT
= 7V
VA
OUT
= 6.5V
VA
OUT
= 6V
VA
OUT
= 5.5V
VA
OUT
= 5V
VA
OUT
= 4.5V
VA
OUT
= 4V
VA
OUT
= 3.5V
VA
OUT
= 3V
VA
OUT
= 2.5V
SUPPLY VOLTAGE (V)
10
S
16
15
14
13
12
11
10
9
8
7
6
5
1508 G06
21
32
T
J
= 25
°
C
T
J
= 125
°
C
T
J
= –55
°
C
LOAD CAPACITANCE (nF)
0
T
400
300
200
100
0
10
20
30
40
1508 G07
50
RISE TIME
NOTE: GTDR SLEWS
BETWEEN 1V AND 16V
FALL TIME
SUPPLY VOLTAGE (V)
0
S
μ
A
550
500
450
400
350
300
250
200
150
100
50
0
1508 G08
20
125
°
C
–55
°
C
25
°
C
4
8
12
16
2
6
10
14
18
C
SET
CAPACITANCE (pF)
200
F
500
450
400
350
300
250
200
150
100
50
0
1508 G09
1400
2200
600
1000
1800
R
SET
= 10k
R
SET
= 15k
R
SET
= 20k
R
SET
= 30k
C
SET
CAPACITANCE (pF)
200
M
1.00
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
0.91
0.90
1508 G10
1400
2200
600
1000
1800
R
SET
= 10k
R
SET
= 15k
R
SET
= 20k
R
SET
= 30k
M
OUT
VOLTAGE (V)
M
O
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
1508 G11
2.4
1.2
0
–1.2
–2.4
T
J
= 125
°
C
T
J
= 25
°
C
T
J
= –55
°
C
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參數(shù)描述
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