LT1084CK(RevC) 데이터 시트보기 (PDF) - Linear Technology
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LT1084CK Datasheet PDF : 16 Pages
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LT1083/LT1084/LT1085
ELECTRICAL CHARACTERISTICS
PARAMETER
Load Regulation
Dropout Voltage
Current Limit
LT1083
LT1084
LT1085
Minimum Load Current
Thermal Regulation
LT1083
LT1084
LT1085
Ripple Rejection
Adjust Pin Current
Adjust Pin Current Change
Temperature Stability
Long Term Stability
RMS Output Noise (% of VOUT)
Thermal Resistance Junction-to-Case
LT1083
LT1084
LT1085
CONDITIONS
(VIN – VOUT) = 3V
10mA ≤ IOUT ≤ IFULL LOAD
TJ = 25°C (Notes 1, 2, 3, 5)
∆VREF = 1%, IOUT = IFULLLOAD (Notes 4, 5, 7)
(VIN – VOUT) = 5V
(VIN – VOUT) = 25V
(VIN – VOUT) = 5V
(VIN – VOUT) = 25V
(VIN – VOUT) = 5V
(VIN – VOUT) = 25V
(VIN – VOUT) = 25V
TA = 25°C, 30ms Pulse
f = 120Hz, CADJ = 25µF, COUT = 25µF Tantalum
IOUT = IFULL LOAD, (VIN – VOUT) = 3V (Notes 5, 6, 7)
TJ = 25°C
10mA ≤ IOUT ≤ IFULL LOAD
1.5V ≤ (VIN – VOUT) ≤ 25V (Note 5)
TA = 125°C, 1000 Hrs
TA = 25°C
10Hz = ≤ f ≤ 10kHz
Control Circuitry/Power Transistor
K Package
P Package
K Package
P Package
M, T Packages
K Package
M, T Packages
MIN TYP MAX
UNITS
0.1 0.3
%
q
0.2 0.4
%
q
1.3 1.5
V
q 8.0 9.5
A
q 0.4 1.0
A
q 5.5 6.5
A
q 0.3 0.6
A
q 3.2 4.0
A
q 0.2 0.5
A
q
5
10
mA
0.002 0.010
%/W
0.003 0.015
%/W
0.004 0.020
%/W
q 60 75
dB
55
µA
q
120
µA
q
0.2 5
µA
q
0.5
%
0.3 1
%
0.003
%
0.6/1.6
°C/W
0.5/1.6
°C/W
0.75/2.3 °C/W
0.65/2.3 °C/W
0.65/2.7 °C/W
0.9/3.0
°C/W
0.7/3.0
°C/W
The q denotes the specifications which apply over the full operating
temperature range.
Note 1: 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 2: 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 3: IFULL LOAD is defined in the current limit curves. The IFULLLOAD
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 4: 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 5: For LT1083 IFULL LOAD is 5A for – 55°C ≤ TJ < – 40°C and 7.5A for
TJ ≥ –40°C.
Note 6: 1.7V ≤ (VIN – VOUT) ≤ 25V for LT1084 at – 55°C ≤ TJ ≤ – 40°C.
Note 7: Dropout is 1.7V maximum for LT1084 at – 55°C ≤ TJ ≤ – 40°C.
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