LT1083_15 Datasheet, PDF (5/22 Pages) Linear Technology – 7.5A, 5A, 3A Low Dropout Positive Adjustable Regulators

LT1083/LT1084/LT1085
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C.
PARAMETER
CONDITIONS
MIN TYP MAX
Reference Voltage
Line Regulation
I_OUT = 10mA, T_J = 25°C,
(V_IN – V_OUT) = 3V
10mA ≤ I_OUT ≤ I_{FULL_LOAD}
1.5V ≤ (V_IN – V_OUT) ≤ 25V (Notes 4, 6, 7)
I_LOAD = 10mA, 1.5V ≤ (V_IN – V_OUT) ≤ 15V, T_J = 25°C (Notes 2, 3)
1.238
l _1.225
l
1.250
1.250
0.015
0.035
1.262
1.270
0.2
0.2
Load Regulation
M-Grade: 15V ≤ (V_IN – V_OUT) ≤ 35V (Notes 2, 3)
l
0.05 0.5
C-, I-Grades: 15V ≤ (V_IN – V_OUT) ≤ 30V (Notes 2, 3)
l
0.05 0.5
(V_IN – V_OUT) = 3V, 10mA ≤ I_OUT ≤ I_{FULL_LOAD}, T_J = 25°C
(Notes 2, 3, 4, 6)
l
0.1
0.3
0.2
0.4
Dropout Voltage
Current Limit
LT1083
LT1084
LT1085
Minimum Load Current
Thermal Regulation
LT1083
LT1084
LT1085
∆V_REF = 1%, I_OUT = I_{FULL_LOAD} (Notes 5, 6, 8)
(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
l
1.3
1.5
l _8.0
9.5
l _0.4
1.0
l _5.5
6.5
l _0.3
0.6
l
l
3.2
4.0
0.2
0.5
l
5
10
0.002
0.003
0.004
0.010
0.015
0.020
Ripple Rejection
Adjust Pin Current
f = 120Hz, C_ADJ = 25µF, C_OUT = 25µF Tantalum
I_OUT = I_{FULL_LOAD}, (V_IN – V_OUT) = 3V (Notes 6, 7, 8)
T_J = 25°C
l 60
l
75
55
120
Adjust Pin Current Change
Temperature Stability
10mA ≤ I_OUT ≤ I_{FULL_LOAD}, 1.5V ≤ (V_IN – V_OUT) ≤ 25V (Note 6)
l
l
0.2
5
0.5
Long-Term Stability
RMS Output Noise (% of V_OUT)
Thermal Resistance Junction-to-Case
LT1083
LT1084
LT1085
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 Package
0.3
1
0.003
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
UNITS
V
V
%
%
%
%
%
%
V
A
A
A
A
A
A
mA
%/W
%/W
%/W
dB
µA
µA
µA
%
%
%
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
For more information www.linear.com/LT1083
108345fh
5