參數(shù)資料
型號: LT1172CT
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: 3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PZFM5
封裝: PLASTIC, TO-220, 5 PIN
文件頁數(shù): 6/20頁
文件大?。?/td> 266K
代理商: LT1172CT
6
LT1170/LT1171/LT1172
TEMPERATURE (
°
C)
V
C
1170/1/2 G16
400
350
300
250
200
150
100
50
0
–75
–25
25
50
150
–50
0
75 100 125
–400
–350
–300
–250
–200
–150
–100
–50
0
V
C
μ
A
CURRENT (OUT OF V
C
PIN)
VOLTAGE
V
VOLTAGE IS REDUCED UNTIL
REGULATOR CURRENT DROPS
BELOW 300
μ
A
JUNCTION TEMPERATURE (
°
C)
–75
T
μ
s
–25
25
50
150
1170/1/2 G17
–50
0
75 100 125
2.2
2.0
1.8
1.6
1.4
1.2
1.0
Isolated Mode Flyback
Reference Voltage
TEMPERATURE (
°
C)
F
1170/1/2 G18
23
22
21
20
19
18
17
16
15
–75
–25
25
50
150
–50
0
75 100 125
R
FB
= 500
R
FB
= 1k
R
FB
= 10k
Normal/Flyback Mode Threshold on
Feedback Pin
TEMPERATURE (
°
C)
–50
F
500
490
480
470
460
450
440
430
420
410
400
0
50
75
1170/1/2 G20
–25
25
100 125
150
–24
–22
–20
–18
–16
–14
–12
–10
–8
–6
–4
F
μ
A
FEEDBACK PIN CURRENT
(AT THRESHOLD)
FEEDBACK PIN VOLTAGE
(AT THRESHOLD)
Flyback Blanking Time
Shutdown Thresholds
Transconductance of Error
Amplifier
FREQUENCY (Hz)
1k
T
μ
m
7000
6000
5000
4000
3000
2000
1000
0
–1000
10k
100k
1170/1/2 G19
1M
10M
–30
0
30
60
90
120
150
180
210
P
θ
g
m
TEMPERATURE (
°
C)
I
11
10
9
8
7
6
5
4
3
2
1
1170/1/2 G13
–75
–25
25
50
150
–50
0
75 100 125
V
SUPPLY
= 60V
V
SUPPLY
= 3V
V
C
= 0.6V
Feedback Pin Clamp Voltage
Switch “Off” Characteristics
Idle Supply Current vs
Temperature
FEEDBACK CURRENT (mA)
0
F
500
450
400
350
300
250
200
150
100
50
0
0.4
1170/1/2 G14
0.1 0.2 0.3
0.5 0.6 0.7 0.8 0.9 1.0
–55
°
C
25
°
C
150
°
C
SWITCH VOLTAGE (V)
0
S
μ
A
1000
900
800
700
600
500
400
300
200
100
0
40
1170/1/2 G15
10
20 30
50
60 70 80 90 100
V
= 55V
V
SUPPLY
V
SUPPLY
= 15V
V
SUPPLY
= 40V
TYPICAL PERFOR U
相關(guān)PDF資料
PDF描述
LT1172HV RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
LT1172I RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
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