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參數(shù)資料
| 型號(hào)： | LTC1504A |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 抗輻射高效，5安培開(kāi)關(guān)穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大?。?/td> | 132K |
| 代理商： | LTC1504A |
3
LTC1504A
ELECTRICAL CHARACTERISTICS
The
G
denotes specifications which apply over the full operating
temperature range.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2:
All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 3:
This parameter is guaranteed by correlation and is not tested
directly.
Note 4:
LTC1504A quiescent current is dominated by the gate drive
current drawn by the onboard power switches. With FB or SENSE pulled to
V
CC
the output stage will stop switching and the static quiescent current
can be observed. With FB or SENSE hooked up normally, the output stage
will be switching and total dynamic supply current can be measured.
Note 5:
Fixed output parts will appear to have g
mV
and A
V
values 2.6 times
lower than the specified values, due to the internal divider resistors.
Note 6:
The I
LIM
amplifier can sink but not source current. Under normal
(not current limited) operation, the I
LIM
output current will be zero.
Note 7:
Contact factory for guaranteed specifications at 2.7V supply.
TYPICAL PERFOR
M
A
CE CHARACTERISTICS
U
Supply Current vs Supply Voltage
TEMPERATURE (
°
C)
–50
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
25
75
1504A TPC03
–25
0
50
100
125
S
)
V
CC
= 10V
V
CC
= 5V
V
CC
= 3.3V
Switch On-Resistance vs
Temperature
SUPPLY VOLTAGE (V)
2.5
1504A TPC01
5
7.5
10
S
14
12
10
8
6
4
2
0
V
FB
= V
OUT
V
FB
= V
CC
T
A
= 25
°
C
I
OUT
= 0
Current Limit Threshold vs R
IMAX
R
IMAX
(
)
10k
C
700
600
500
400
300
200
100
0
100k
1504A TPC04
T
A
= 25
°
C
V
CC
= 5V
TEMPERATURE (
°
C)
–50
–25
0
25
50
75
100
125
S
10
1
0.1
1504A TPC02
V
FB
= V
OUT
V
FB
= V
CC
V
CC
= 5V
I
OUT
= 0
Supply Current vs Temperature
Shutdown Threshold vs
Supply Voltage
SUPPLY VOLTAGE (V)
3
5
7
S
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
10
1504A TPC07
Current Limit Threshold vs
Temperature
TEMPERATURE (
°
C)
–50
C
–25
0
25
50
75
1504A TPC05
125
500
450
400
350
300
250
200
150
100
50
0
100
V
CC
= 5V
R
IMAX
= 47k
R
IMAX
= 22k
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
SS
Soft Start Source Current
V
SS
= 0V, Commercial
V
SS
= 0V, Industrial
10% to 90% Ouput Swing
V
COMP
= V
CC
G
G
–8
–8
–12
–12
5
–16
–17
50
μ
A
μ
A
ns
%
t
r
, t
f
DC
MAX
Output Switch Rise/Fall Time
Maximum Duty Cycle
G
G
100
V
CC
= 5V, T
A
= 25
°
C unless otherwise specified. (Note 2)
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