LT1085CT Linear Technology, LT1085CT Datasheet - Page 4

• Manufacturer Part Number: LT1085CT
• Description: IC LDO REG 3A ADJ TO-220-3
• Manufacturer: Linear Technology

Specifications of LT1085CT

• Regulator Topology: Positive Adjustable
• Voltage - Output: 1.25 ~ 28.5 V
• Voltage - Input: 2.55 ~ 30 V
• Voltage - Dropout (typical): 1.3V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Current - Limit (min): 3.2A
• Operating Temperature: 0°C ~ 150°C
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LT1083/LT1084/LT1085
temperature range, otherwise specifi cations are at T
PARAMETER
Reference Voltage
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Minimum Load Current
Thermal Regulation
Ripple Rejection
Adjust Pin Current
Adjust Pin Current Change
Temperature Stability
Long-Term Stability
RMS Output Noise (% of V
ELECTRICAL CHARACTERISTICS
4
LT1083
LT1084
LT1085
LT1083
LT1084
LT1085
OUT
)
CONDITIONS
I
(V
10mA ≤ I
1.5V ≤ (V
I
M-Grade: 15V ≤ (V
C-, I-Grades: 15V ≤ (V
(V
(Notes 2, 3, 4, 6)
ΔV
(V
(V
(V
(V
(V
(V
(V
T
f = 120Hz, C
I
T
10mA ≤ I
T
T
OUT
LOAD
OUT
A
A
A
J
IN
IN
IN
IN
IN
IN
IN
IN
IN
REF
= 25°C, 30ms Pulse
= 25°C
= 125°C, 1000 Hrs
= 25°C, 10Hz = ≤ f ≤ 10kHz
– V
– V
– V
– V
– V
– V
– V
– V
– V
= 10mA, T
= I
= 10mA, 1.5V ≤ (V
= 1%, I
FULL_LOAD
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN
) = 3V
) = 3V, 10mA ≤ I
) = 5V
) = 25V
) = 5V
) = 25V
) = 5V
) = 25V
) = 25V
– V
ADJ
≤ I
≤ I
OUT
OUT
J
FULL_LOAD
= 25μF, C
FULL_LOAD
= 25°C,
, (V
= I
) ≤ 25V (Notes 4, 6, 7)
A
IN
FULL_LOAD
= 25°C.
IN
– V
IN
– V
OUT
IN
– V
The
OUT
, 1.5V ≤ (V
OUT
– V
OUT
) ≤ 35V (Notes 2, 3)
OUT
= 25μF Tantalum
l
) = 3V (Notes 6, 7, 8)
OUT
(Notes 5, 6, 8)
) ≤ 30V (Notes 2, 3)
≤ I
denotes the specifi cations which apply over the full operating
) ≤ 15V, T
FULL_LOAD
IN
– V
OUT
J
, T
= 25°C (Notes 2, 3)
) ≤ 25V (Note 6)
J
= 25°C
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
1.238
1.225
MIN
8.0
0.4
5.5
0.3
3.2
0.2
60
1.250
1.250
0.015
0.035
0.002
0.003
0.004
0.003
0.05
0.05
TYP
0.1
0.2
1.3
9.5
1.0
6.5
0.6
4.0
0.5
0.2
0.5
0.3
75
55
5
1.262
1.270
0.010
0.015
0.020
MAX
120
0.2
0.2
0.5
0.5
0.3
0.4
1.5
10
5
1
108345fg
UNITS
%/W
%/W
%/W
mA
dB
μA
μA
μA
%
%
%
%
%
%
%
%
%
V
V
V
A
A
A
A
A
A