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參數(shù)資料
| 型號： | 508589A |
| 英文描述： | IC |
| 中文描述： | 集成電路 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 278K |
| 代理商： | 508589A |
3
LT1083/LT1084/LT1085
PARAMETER
Load Regulation
CONDITIONS
(V
IN
– V
OUT
) = 3V
10mA
≤
I
OUT
≤
I
FULL LOAD
T
J
= 25
°
C (Notes 2, 3, 4, 6)
MIN
TYP
MAX
UNITS
0.1
0.2
1.3
0.3
0.4
1.5
%
%
V
G
Dropout Voltage
Current Limit
LT1083
V
REF
= 1%, I
OUT
= I
FULLLOAD
(Notes 5, 6, 8)
G
(V
IN
– V
OUT
) = 5V
(V
IN
– V
OUT
) = 25V
(V
IN
– V
OUT
) = 5V
(V
IN
– V
OUT
) = 25V
(V
IN
– V
OUT
) = 5V
(V
IN
– V
OUT
) = 25V
(V
IN
– V
OUT
) = 25V
T
A
= 25
°
C, 30ms Pulse
G
G
G
G
G
G
8.0
0.4
5.5
0.3
3.2
0.2
9.5
1.0
6.5
0.6
4.0
0.5
5
A
A
A
A
A
A
LT1084
LT1085
Minimum Load Current
Thermal Regulation
LT1083
LT1084
LT1085
Ripple Rejection
G
10
mA
0.002
0.003
0.004
0.010
0.015
0.020
%/W
%/W
%/W
f = 120Hz, C
ADJ
= 25
μ
F, C
OUT
= 25
μ
F Tantalum
I
OUT
= I
FULL LOAD
, (V
IN
– V
OUT
) = 3V (Notes 6, 7, 8)
T
J
= 25
°
C
G
60
75
55
dB
μ
A
μ
A
Adjust Pin Current
G
120
Adjust Pin Current Change
10mA
≤
I
OUT
≤
I
FULL LOAD
1.5V
≤
(V
IN
– V
OUT
)
≤
25V (Note 6)
G
0.2
0.5
0.3
5
μ
A
%
%
Temperature Stability
Long Term Stability
RMS Output Noise (% of V
OUT
)
G
T
A
= 125
°
C, 1000 Hrs
T
A
= 25
°
C
10Hz =
≤
f
≤
10kHz
Control Circuitry/Power Transistor
K Package
P Package
K Package
P Package
T Package
K Package
M, T Packages
1
0.003
%
Thermal Resistance Junction-to-Case
LT1083
0.6/1.6
0.5/1.6
0.75/2.3
0.65/2.3
0.65/2.7
0.9/3.0
0.7/3.0
°
C/W
°
C/W
°
C/W
°
C/W
°
C/W
°
C/W
°
C/W
LT1084
LT1085
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
See thermal regulation specifications for changes in output voltage
due to heating effects. Load and line regulation are measured at a constant
junction temperature by low duty cycle pulse testing.
Note 3:
Line and load regulation are guaranteed up to the maximum power
dissapation (60W for the LT1083, 45W for the LT1084 (K, P), 30W for the
LT1084 (T) and 30W for the LT1085). Power dissipation is determined by
the input/output differential and the output current. Guaranteed maximum
power dissipation will not be available over the full input/output voltage
range.
Note 4:
I
FULL LOAD
is defined in the current limit curves. The I
FULLLOAD
curve is defined as the minimum value of current limit as a function of
input-to-output voltage. Note that the 60W power dissipation for the
LT1083 (45W for the LT1084 (K, P), 30W for the LT1084 (T), 30W for the
LT1085) is only achievable over a limited range of input-to-output voltage.
Note 5:
Dropout voltage is specified over the full output current range of
the device. Test points and limits are shown on the Dropout Voltage
curve.
Note 6:
For LT1083 I
FULL LOAD
is 5A for –55
°
C
≤
T
J
< –40
°
C and 7.5A for
T
J
≥
–40
°
C.
Note 7:
1.7V
≤
(V
IN
– V
OUT
)
≤
25V for LT1084 at –55
°
C
≤
T
J
≤
–40
°
C.
Note 8:
Dropout is 1.7V maximum for LT1084 at –55
°
C
≤
T
J
≤
–40
°
C.
The
G
denotes the specifications which apply over the full operating
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