參數(shù)資料
型號(hào): LT1170CT#PBF06
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 11 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PZFM5
封裝: PLASTIC, TO-220, 5 PIN
文件頁(yè)數(shù): 17/20頁(yè)
文件大?。?/td> 278K
代理商: LT1170CT#PBF06
6
LT1170/LT1171/LT1172
117012ff
VC PIN VOLTAGE (mV)
0
SUPPLY
CURRENT
(
A)
200
180
160
140
120
100
80
60
40
20
0
40
1170/1/2 G10
10
20 30
50 60 70 80 90 100
TJ = 150°C
–55
°C ≤ TJ ≤ 125°C
Shutdown Mode Supply Current
TEMPERATURE (
°C)
TRANSCONDUCTANCE
(
mho)
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
1170/1/2 G11
–75
–25
25
50
150
–50
0
75 100 125
gm =
I (VC PIN)
V (FB PIN)
Error Amplifier Transconductance
VC Pin Characteristics
VC PIN VOLTAGE (V)
300
200
100
0
–100
–200
–300
–400
1170/1/2 G12
V
C
PIN
CURRENT
(
A)
0
2.0
0.5
1.0
1.5
2.5
VFB = 1.5V (CURRENT INTO VC PIN)
VFB = 0.8V (CURRENT OUT OF VC PIN)
TJ = 25°C
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TEMPERATURE (
°C)
V
C
PIN
VOLTAGE
(mV)
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 PIN
CURRENT
(
A)
CURRENT (OUT OF VC PIN)
VOLTAGE
VC VOLTAGE IS REDUCED UNTIL
REGULATOR CURRENT DROPS
BELOW 300
A
JUNCTION TEMPERATURE (
°C)
–75
TIME
(
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)
FLYBACK
VOLTAGE
(V)
1170/1/2 G18
23
22
21
20
19
18
17
16
15
–75
–25
25
50
150
–50
0
75 100 125
RFB = 500
RFB = 1k
RFB = 10k
Flyback Blanking Time
Shutdown Thresholds
TEMPERATURE (
°C)
IDLE
SUPPLY
CURRENT
(mA)
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
VSUPPLY = 60V
VSUPPLY = 3V
VC = 0.6V
Feedback Pin Clamp Voltage
Switch “Off” Characteristics
Idle Supply Current vs
Temperature
FEEDBACK CURRENT (mA)
0
FEEDBACK
VOLTAGE
(mV)
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
SWITCH
CURRENT
(
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
VSUPPLY
= 55V
VSUPPLY
= 3V
VSUPPLY
= 15V
VSUPPLY
= 40V
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