Datasheet
2
LT1585A/LT1585A-3.3
1585afa
ABSOLUTE MAXIMUM RATINGS
W
WW
U
V
IN
............................................................................. 7V
Operating Junction Temperature Range
Control Section ................................... 0°C to 125°C
Power Transistor ................................. 0°C to 150°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
100% Thermal Limit Functional Test
PRECONDITIONI G
UUU
PACKAGE/ORDER INFORMATION
W
U
U
ORDER PART
NUMBER
LT1585ACT
ORDER PART
NUMBER
LT1585ACT-3.3
θ
JA
= 50°C/W, θ
JC
= 3°C/W θ
JA
= 50°C/W, θ
JC
= 3°C/W
TAB IS
V
OUT
T PACKAGE
3-LEAD PLASTIC TO-220
V
IN
V
OUT
ADJ
FRONT VIEW
3
2
1
TAB IS
V
OUT
T PACKAGE
3-LEAD PLASTIC TO-220
V
IN
V
OUT
GND
FRONT VIEW
3
2
1
Consult LTC Marketing for parts specified with wider operating temperature ranges.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Voltage LT1585A (V
IN
– V
OUT
) = 3V, T
J
= 25°C, I
OUT
= 10mA 1.238 (–1%) 1.250 1.262 (+1%) V
1.5V ≤ (V
IN
– V
OUT
) ≤ 5.75V, 10mA ≤ I
OUT
≤ 5A ● 1.225 (–2%) 1.250 1.275 (+2%) V
Output Voltage LT1585A-3.3 V
IN
= 5V, T
J
= 25°C, I
OUT
= 0mA 3.267 (–1%) 3.300 3.333 (+1%) V
4.75V ≤ V
IN
≤ 7V, 0mA ≤ I
OUT
≤ 5A ● 3.235 (– 2%) 3.300 3.365 (+2%) V
Line Regulation LT1585A 2.75V ≤ V
IN
≤ 7V, I
OUT
= 10mA
(Notes 1, 2) LT1585A-3.3 4.75V ≤ V
IN
≤ 7V, I
OUT
= 0mA
● 0.005 0.2 %
Load Regulation LT1585A (V
N
– V
OUT
) = 3V, T
J
= 25°C, 10mA ≤ I
OUT
≤ I
FULL LOAD
(Notes 1, 2, 3) LT1585A-3.3 V
IN
= 5V, T
J
= 25°C, 0mA ≤ I
OUT
≤ I
FULL LOAD
0.05 0.3 %
● 0.05 0.5 %
Dropout Voltage LT1585A ∆V
REF
= 1%, I
OUT
= 3A
LT1585A-3.3 ∆V
OUT
= 1%, I
OUT
= 3A
● 1.150 1.300 V
LT1585A ∆V
REF
= 1%, I
OUT
= 5A
LT1585A-3.3 ∆V
OUT
= 1%, I
OUT
= 5A
● 1.200 1.400 V
Current Limit LT1585A (V
IN
– V
OUT
)
= 5.5V
(Note 3) LT1585A-3.3 (V
IN
– V
OUT
)
= 5.5V
● 5.0 6.0 A
Adjust Pin Current LT1585A ● 55 120 µA
Adjust Pin Current LT1585A 1.5V ≤ (V
IN
– V
OUT
) ≤ 5.75V, 10mA ≤ I
OUT
≤ I
FULL LOAD
● 0.2 5 µA
Change (Note 3)
Minimum LT1585A 1.5V ≤ (V
IN
– V
OUT
) ≤ 5.75V ● 210 mA
Load Current
Quiescent Current LT1585A-3.3 V
IN
= 5V ● 813 mA
ELECTRICAL CHARACTERISTICS
The ● denotes specificatons which apply over the specified temperature range, otherwise specifications are at T
A
= 25°C.