Datasheet
3
LT1083/84/85 Fixed
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Voltage LT1085-3.6 5V ≤ V
IN
≤ 15V, 0 ≤ I
OUT
≤ 2.5A (Note 8) ● 3.528 3.672 V
V
IN
= 4.75V, I
OUT
= 3A, T
J
≥ 0°C 3.350 3.672 V
V
IN
= 4.75V, I
OUT
= 2.5A, T
J
≥ 0°C 3.450 3.672 V
V
IN
= 4.75V, I
OUT
= 1.5A, T
J
> 0°C 3.528 3.672 V
LT1083/4/5-5 I
OUT
= 0mA, T
J
= 25°C, V
IN
= 8V (K Package Only) 4.950 5.000 5.050 V
0 ≤ I
OUT
≤ I
FULLOAD
, 6.5V ≤ V
IN
≤ 20V (Notes 3, 5, 6, 8) 4.900 5.000 5.100 V
LT1083/4/5-12 I
OUT
= 0mA, T
J
= 25°C, V
IN
= 15V (K Package Only) 11.880 12.000 12.120 V
0 ≤ I
OUT
≤ I
FULLOAD
, 13.5V ≤ V
IN
≤ 25V (Notes 3, 5, 6, 8) 11.760 12.000 12.240 V
Line Regulation LT1084-3.3 I
OUT
= 0mA, T
J
= 25°C, 4.8V ≤ V
IN
≤ 15V 0.5 6 mV
● 1.0 6 mV
LT1085-3.3 4.8V ≤ V
IN
≤ 15V, I
OUT
= 0mA, T
J
= 25°C 0.5 6 mV
● 1.0 6 mV
LT1085-3.6 4.8V ≤ V
IN
≤ 15V, I
OUT
= 0mA, T
J
= 25°C 0.5 6 mV
● 1.0 6 mV
LT1083/4/5-5 I
OUT
= 0mA, T
J
= 25°C, 6.5V ≤ V
IN
≤ 20V (Notes 1, 2) 0.5 10 mV
● 1.0 10 mV
LT1083/4/5-12 I
OUT
= 0mA, T
J
= 25°C, 13.5V ≤ V
IN
≤ 25V (Notes 1, 2) 1.0 25 mV
● 2.0 25 mV
Load Regulation LT1084-3.3 V
IN
= 5V, 0 ≤ I
OUT
≤ 5A, T
J
= 25°C 3 15 mV
● 720 mV
LT1085-3.3 V
IN
= 5V, 0 ≤ I
OUT
≤ 3A, T
J
= 25°C 3 15 mV
● 720 mV
LT1085-3.6 V
IN
= 5.25V, 0 ≤ I
OUT
≤ 3A, T
J
= 25°C 3 15 mV
● 720 mV
LT1083/4/5-5 V
IN
= 8V, 0 ≤ I
OUT
≤ I
FULLLOAD,
T
J
= 25°C (Notes 1, 2, 3, 5) 5 20 mV
● 10 35 mV
LT1083/4/5-12 V
IN
= 15V, 0 ≤ I
OUT
≤ I
FULLLOAD,
T
J
= 25°C (Notes 1, 2, 3, 5) 12 36 mV
● 24 72 mV
Dropout Voltage LT1084/5-3.3 ∆V
OUT
= 33mV, I
OUT
= I
FULL LOAD
(Notes 4, 5) ● 1.3 1.5 V
LT1085-3.6 ∆V
OUT
= 36mV, I
OUT
= I
FULL LOAD
(Notes 4, 5) ● 1.3 1.5 V
LT1083/4/5-5 ∆V
OUT
= 50mV, I
OUT
= I
FULL LOAD
(Notes 4, 5) ● 1.3 1.5 V
LT1083/4/5-12 ∆V
OUT
= 120mV, I
OUT
= I
FULL LOAD
(Notes 4, 5) ● 1.3 1.5 V
Current Limit LT1083-5 V
IN
= 10V ● 8.0 9.5 A
LT1083-12 V
IN
= 17V ● 8.0 9.5 A
LT1084-3.3 V
IN
= 8V ● 5.5 6.5 A
LT1084-5 V
IN
= 10V ● 5.5 6.5 A
LT1084-12 V
IN
= 17V ● 5.5 6.5 A
LT1085-3.3/3.6 V
IN
= 8V ● 3.2 4.0 A
LT1085-5 V
IN
= 10V ● 3.2 4.0 A
LT1085-12 V
IN
= 17V ● 3.2 4.0 A
Quiescient Current LT1084-3.3 V
IN
= 18V ● 5.0 10.0 mA
LT1085-3.3 V
IN
= 18V ● 5.0 10.0 mA
LT1085-3.6 V
IN
= 18V ● 5.0 10.0 mA
LT1083/4/5-5 V
IN
≤ 20V ● 5.0 10.0 mA
LT1083/4/5-12 V
IN
≤ 25V ● 5.0 10.0 mA
Thermal Regulation LT1083-5/12 T
A
= 25°C, 30ms pulse 0.002 0.010 %/W
LT1084-3.3/5/12 0.003 0.015 %/W
LT1085-3.3/3.6/5/12 0.004 0.020 %/W
Ripple Rejection f = 120Hz, C
OUT
= 25µF Tantalum, I
OUT
= I
FULLLOAD
LT1084-3.3 f = 120Hz, C
OUT
= 25µF Tantalum, I
OUT
= 5A, V
IN
= 6.3V ● 60 72 dB
ELECTRICAL CHARACTERISTICS