參數(shù)資料
型號: LT1074HVMK
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: 8.5 A SWITCHING REGULATOR, 125 kHz SWITCHING FREQ-MAX, MBFM4
封裝: METAL CAN, TO-3, 4 PIN
文件頁數(shù): 3/16頁
文件大?。?/td> 215K
代理商: LT1074HVMK
LT1074/LT1076
3
The
G
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. T
j
= 25
°
C, V
IN
= 25V, unless otherwise noted.
PARAMETER
Switch “On” Voltage (Note 2)
CONDITIONS
LT1074
MIN
TYP
MAX
1.85
2.1
2.3
2.5
1.2
1.7
300
500
150
250
11
12
300
8
4.8
8.5
UNITS
I
SW
= 1A, T
j
0
°
C
I
SW
= 1A, T
j
< 0
°
C
I
SW
= 5A, T
j
0
°
C
I
SW
= 5A, T
j
< 0
°
C
I
SW
= 0.5A
I
SW
= 2A
V
IN
25V, V
SW
= 0
V
IN
= V
MAX,
V
SW
= 0 (Note 8)
V
IN
= 25V, V
SW
= 0
V
IN
= V
MAX,
V
SW
= 0 (Note 8)
V
FB
= 2.5V, V
IN
40V
40V < V
IN
< 60V
V
SHUT
= 0.1V (Device Shutdown) (Note 9)
Normal Mode
Startup Mode (Note 4)
LT1074
I
LIM
Open
R
LIM
= 10k (Note 6)
R
LIM
= 7k (Note 6)
LT1076
I
LIM
Open
R
LIM
= 10k (Note 6)
R
LIM
= 7k (Note 6)
V
V
V
V
V
V
LT1076
G
G
Switch “Off” Leakage
LT1074
5
μ
A
μ
A
μ
A
μ
A
mA
mA
μ
A
10
LT1076
Supply Current (Note 3)
G
G
G
8.5
9
140
7.3
3.5
6.5
4.5
3
2.6
1.8
1.2
90
100
Minimum Supply Voltage
G
G
V
V
A
A
A
A
A
A
%
Switch Current Limit (Note 5)
G
5.5
G
2
3.2
Maximum Duty Cycle
Switching Frequency
G
85
90
85
85
110
120
125
kHz
kHz
kHz
kHz
%/V
V/V
μ
mho
T
j
125
°
C
T
j
> 125
°
C
V
FB
= 0V through 2k
(Note 5)
8V
V
IN
V
MAX
(Note 8)
1V
V
C
4V
G
G
20
0.03
2000
5000
140
1
0.5
2.21
±
0.5
±
1
Switching Frequency Line Regulation
Error Amplifier Voltage Gain (Note 7)
Error Amplifier Transconductance
Error Amplifier Source and Sink Current
G
0.1
3700
100
0.7
8000
225
1.6
2
2.265
±
1.5
±
2.5
Source (V
FB
= 2V)
Sink (V
FB
= 2.5V)
V
FB
= V
REF
V
C
= 2V
V
REF
(Nominal) = 2.21V
All Conditions of Input Voltage, Output
Voltage, Temperature and Load Current
8V
V
IN
V
MAX
(Note 8)
μ
A
mA
μ
A
Feedback Pin Bias Current
Reference Voltage
Reference Voltage Tolerance
G
G
2.155
V
%
%
G
Reference Voltage Line Regulation
V
C
Voltage at 0% Duty Cycle
G
0.005
1.5
–4
24
10
0.02
%/V
V
Over Temperature
G
mV/
°
C
Multiplier Reference Voltage
Shutdown Pin Current
V
V
SH
= 5V
V
SH
V
THRESHOLD
(
2.5V)
Switch Duty Cycle = 0
Fully Shut Down
LT1074
LT1076
G
G
5
20
50
2.7
0.5
2.5
4.0
μ
A
μ
A
Shutdown Thresholds
G
G
2.2
0.1
2.45
0.3
V
V
Thermal Resistance Junction to Case
°
C/W
°
C/W
ELECTRICAL CHARACTERISTICS
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