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參數(shù)資料
| 型號： | LT1507IS8-3.3 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 3 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁數(shù)： | 4/20頁 |
| 文件大小： | 343K |
| 代理商： | LT1507IS8-3.3 |
4
LT1507
Shutdown Pin Bias Current
JUNCTION TEMPERATURE (
°
C)
–50
2.40
2.36
2.32
0.8
0.4
0
25
75
LT1507 TPC05
–25
0
50
100
125
S
STANDBY
STARTUP
SHUTDOWN
Standby and Shutdown Thresholds
TYPICAL PERFOR
M
A
N
CE CHARACTERISTICS
INPUT VOLTAGE (V)
0
0
I
μ
A
5
10
15
20
25
30
3
6
9
12
LT1507 TPC06
15
V
SHDN
= 0V
Shutdown Supply Current
Shutdown Supply Current
Error Amplifier Transconductance
TEMPERATURE (
°
C)
–50
500
400
300
200
8
4
0
25
75
L11507 TPC04
–25
0
50
100
125
C
μ
A
CURRENT REQUIRED TO FORCE SHUTDOWN
(FLOWS OUT OF PIN). AFTER SHUTDOWN,
CURRENT DROPS TO A FEW
μ
A
AT 2.38V STANDBY THRESHOLD
(CURRENT FLOWS OUT OF PIN)
JUNCTION TEMPERATURE (
°
C)
–50
T
μ
m
2500
2000
1500
1000
500
0
0
50
75
LT1507 TPC08
–25
25
100
125
SHUTDOWN VOLTAGE (V)
0
I
μ
A
150
125
100
75
50
25
0
0.1
0.2
0.3
0.4
LT1507 TPC07
0.5
V
IN
= 10V
FREQUENCY (Hz)
G
μ
m
P
3000
2500
2000
1500
1000
500
200
150
100
50
0
–50
100
10k
100k
10M
LT1507 TPC09
1k
1M
GAIN
PHASE
R
200k
C
12pF
V
C
V
FB
×
2e
–3
ERROR AMPLIFIER EQUIVALENT CIRCUIT
R
LOAD
= 50
Error Amplifier Transconductance
Minimum Input Voltage
with 3.3V Output
Switching Frequency
FEEDBACK PIN VOLTAGE (V)
0
S
μ
A
500
400
300
200
100
0
2.0
LT1507 TPC10
0.5
1.0
1.5
2.5
SWITCHING
FREQUENCY
FEEDBACK PIN
CURRENT
Frequency Foldback
JUNCTION TEMPERATURE (
°
C)
–50
600
550
500
450
400
100
LT1507 TPC11
–25
0
25
50
75
125
F
LOAD CURRENT (mA)
1
5.0
I
5.5
6.0
6.5
10
100
1000
LT1507 TPC12
4.5
4.0
3.5
3.0
MINIMUM VOLTAGE
TO START WITH
STANDARD CIRCUIT
MINIMUM VOLTAGE
TO RUN WITH
STANDARD CIRCUIT
MINIMUM INPUT VOLTAGE CAN BE REDUCED
BY ADDING A SMALL EXTERNAL PNP. SEE
APPLICATIONS INFORMATION
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