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LT1587CM-3.45#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1
LT1584/LT1585/LT1587
158457a
APPLICATIO S
U
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
7A, 4.6A, 3A Low Dropout
Fast Response
Positive Regulators
Adjustable and Fixed
NOTE: MICROPROCESSOR APPLICATIONS WITH LOAD TRANSIENTS OF 3.8A REQUIRE
OUTPUT DECOUPLING CAPACITANCE > 1300µF ON FIXED VOLTAGE PARTS TO ACHIEVE
< 50mV OF DEVIATION FROM NOMINAL OUTPUT. CONSULT FACTORY FOR DETAILS
The LT
®
1584/LT1585/LT1587 are low dropout three-
terminal regulators with 7A, 4.6A and 3A output current
capability, respectively. Design has been optimized for low
voltage applications where transient response and mini-
mum input voltage are critical. Similar to the LT1083/4/5
family, it has lower dropout voltage and faster transient
response. These improvements make it ideal for low volt-
age microprocessor applications requiring a regulated
2.5V to 3.6V output with an input supply below 7V.
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal lim-
iting provides protection against any combination of over-
load that would create excessive junction temperatures.
The LT1585/LT1587 are available in both the through-hole
and surface mount versions of the industry standard 3-pin
TO-220 power package. The LT1584 is available in the
through-hole 3-pin TO-220 power package.
■
Fast Transient Response
■
Guaranteed Dropout Voltage at Multiple Currents
■
Load Regulation: 0.05% Typical
■
Trimmed Current Limit
■
On-Chip Thermal Limiting
■
Standard 3-Pin Power Package
■
Pentium
TM
Processor Supplies
■
PowerPC
TM
Supplies
■
Other 2.5V to 3.6V Microprocessor Supplies
■
Low Voltage Logic Supplies
■
Battery-Powered Circuitry
■
Post Regulator for Switching Supply
LT1585/7CM, LT1584/5/7CT Adjustable
LT1585/7CM-3.3, LT1584/5/7CT-3.3 3.3V Fixed
LT1585CM-3.38, LT1584/5CT-3.38 3.38V Fixed
LT1585/7CM-3.45, LT1584/5/7CT-3.45 3.45V Fixed
LT1585/7CM-3.6, LT1584/5/7CT-3.6 3.6V Fixed
, LTC and LT are registered trademarks of Linear Technology Corporation.
Pentium is a trademark of Intel Corporation. PowerPC is a trademark of IBM Corporation.
3.3V, 7A, 4.6A, 3A Regulator
LT1584-3.3
LT1585-3.3
LT1587-3.3
V
IN
≥ 4.75V
1585 TA01
C1
10µF
* REQUIRED FOR STABILITY
LT1584: C2 = 22µF,
LT1585/LT1587: C2 = 10µF
3.3V
7A, 4.6A, 3A
C2*
SOLID
TANTALUM
++
OUTPUT CURRENT (A)
0
INPUT/OUTPUT DIFFERENTIAL (V)
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
1585 TA02
I
FULL LOAD
Dropout Voltage vs Output Current
2
LT1584/LT1585/LT1587
158457a
M PACKAGE
3-LEAD PLASTIC DD
FRONT VIEW
V
IN
V
OUT
ADJ
3
2
1
TAB
IS
OUTPUT
T PACKAGE
3-LEAD PLASTIC TO-220
V
IN
V
OUT
ADJ
FRONT VIEW
3
2
1
TAB
IS
OUTPUT
ABSOLUTE AXI U RATI GS
W
WW
U
(Note 1)
V
IN
............................................................................. 7V
Operating Junction Temperature Range
C-Grade
Control Section ................................... 0°C to 125°C
Power Transistor ................................. 0°C to 150°C
I-Grade
Control Section ............................... –40°C to 125°C
Power Transistor ............................. –40°C to 150°C
100% Thermal Limit Functional Test
PRECONDITIONI G
UUU
ORDER PART
NUMBER
ORDER PART
NUMBER
θ
JA
= 30°C/W* θ
JA
= 50°C/W
θ
JA
= 30°C/W*
θ
JA
= 50°C/W
LT1584CT-3.3
LT1584IT-3.3
LT1585CT-3.3
LT1587CT-3.3
LT1584CT-3.38
LT1585CT-3.38
LT1584CT-3.45
LT1585CT-3.45
LT1587CT-3.45
LT1584CT-3.6
LT1585CT-3.6
LT1587CT-3.6
* With package soldered to 0.5 square inch copper area over backside
ground plane or internal power plane. θ
JA
can vary from 20°C/W to
>40°C/W with other mounting techniques.
LT1585CM-3.3
LT1585CM-3.38
LT1585CM-3.45
LT1585CM-3.6
LT1587CM-3.3
LT1587CM-3.45
LT1587CM-3.6
LT1585CM
LT1587CM
LT1584CT
LT1585CT
LT1587CT
PACKAGE/ORDER INFORMATION
W
UU
M PACKAGE
3-LEAD PLASTIC DD
FRONT VIEW
V
IN
V
OUT
GND
3
2
1
TAB
IS
OUTPUT
T PACKAGE
3-LEAD PLASTIC TO-220
V
IN
V
OUT
GND
FRONT VIEW
3
2
1
TAB
IS
OUTPUT
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
3
LT1584/LT1585/LT1587
158457a
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Voltage LT1584 1.5V ≤ (V
IN
– V
OUT
) ≤ 3V, 10mA ≤ I
OUT
≤ 7A
LT1585 1.5V ≤ (V
IN
– V
OUT
) ≤ 5.75V, 10mA ≤ I
OUT
≤ 4.6A, T
J
≥ 25°C
1.5V ≤ (V
IN
– V
OUT
) ≤ 5.75V, 10mA ≤ I
OUT
≤ 4A, T
J
< 25°C
LT1587 1.5V ≤ (V
IN
– V
OUT
) ≤ 5.75V, 10mA ≤ I
OUT
≤ 3A ● 1.225 (– 2%) 1.250 1.275 (+2%) V
Output Voltage LT1584-3.3 4.75V ≤ V
IN
≤ 6.3V, 0mA ≤ I
OUT
≤ 7A
LT1585-3.3 4.75V ≤ V
IN
≤ 7V, 0mA ≤ I
OUT
≤ 4.6A, T
J
≥ 25°C
4.75V ≤ V
IN
≤ 7V, 0mA ≤ I
OUT
≤ 4A, T
J
< 25°C
LT1587-3.3 4.75V ≤ V
IN
≤ 7V, 0mA ≤ I
OUT
≤ 3A ● 3.235 (– 2%) 3.300 3.365 (+2%) V
LT1584-3.38 4.75V ≤ V
IN
≤ 6.38V, 0mA ≤ I
OUT
≤ 7A
LT1585-3.38 4.75V ≤ V
IN
≤ 7V, 0mA ≤ I
OUT
≤ 4A ● 3.313 (– 2%) 3.380 3.465 (+2.5%) V
LT1584-3.45 4.75V ≤ V
IN
≤ 6.45V,
0mA ≤ I
OUT
≤ 7A
LT1585-3.45 4.75V ≤ V
IN
≤ 7V,
0mA ≤ I
OUT
≤ 4A
LT1587-3.45 4.75V ≤ V
IN
≤ 7V,
0mA ≤ I
OUT
≤ 3A ● 3.381 (– 2%) 3.450 3.519 (+2%) V
LT1584-3.6 4.75V ≤ V
IN
≤ 7V,
0mA ≤ I
OUT
≤ 6A ● 3.400 (– 5.5%) 3.600 3.672 (+2%) V
LT1584-3.6 4.80V ≤ V
IN
≤ 7V,
0mA ≤ I
OUT
≤ 6A ● 3.450 (– 4%) 3.600 3.672 (+2%) V
LT1584-3.6 4.80V ≤ V
IN
≤ 6.6V,
0mA ≤ I
OUT
≤ 7A ● 3.431 (– 4.7%) 3.600 3.672 (+2%) V
LT1584-3.6 4.85V ≤ V
IN
≤ 6.6V,
0mA ≤ I
OUT
≤ 7A ● 3.481 (– 3.3%) 3.600 3.672 (+2%) V
LT1585/7-3.6 4.75V ≤ V
IN
≤ 7V
,
0mA ≤ I
OUT
≤ 3A ● 3.474 (– 3.5%) 3.600 3.672 (+2%) V
LT1585/7-3.6 4.80V ≤ V
IN
≤ 7V
,
0mA ≤ I
OUT
≤ 3A ● 3.528 (– 2%) 3.600 3.672 (+2%) V
LT1585-3.6 4.80V ≤ V
IN
≤ 7V
,
0mA ≤ I
OUT
≤ 4A ● 3.450 (– 4%) 3.600 3.672 (+2%) V
LT1585-3.6 4.85V ≤ V
IN
≤ 7V
,
0mA ≤ I
OUT
≤ 4A ● 3.492 (– 3%) 3.600 3.672 (+2%) V
Line Regulation LT1584/5/7 2.75V ≤ V
IN
≤ 7V, I
OUT
= 10mA
(Notes 2, 3) LT1584/5/7-3.3 4.75V ≤ V
IN
≤ 7V, I
OUT
= 0mA
LT1584/5-3.38 4.75V ≤ V
IN
≤ 7V, I
OUT
= 0mA
LT1584/5/7-3.45 4.75V ≤ V
IN
≤ 7V, I
OUT
= 0mA
LT1584/5/7-3.6 4.75V ≤ V
IN
≤ 7V, I
OUT
= 0mA ● 0.005 0.2 %
Load Regulation LT1584/5/7 (V
N
– V
OUT
) = 3V, T
J
= 25°C, 10mA ≤ I
OUT
≤ I
FULL LOAD
(Notes 2, 3, 4) LT1584/5/7-3.3 V
IN
= 5V, T
J
= 25°C, 0mA ≤ I
OUT
≤ I
FULL LOAD
LT1584/5-3.38 V
IN
= 5V, T
J
= 25°C, 0mA ≤ I
OUT
≤ I
FULL LOAD
LT1584/5/7-3.45 V
IN
= 5V, T
J
= 25°C, 0mA ≤ I
OUT
≤ I
FULL LOAD
LT1584/5/7-3.6 V
IN
= 5.25V, T
J
= 25°C, 0mA ≤ I
OUT
≤ I
FULL LOAD
0.05 0.3 %
● 0.05 0.5 %
Dropout Voltage LT1585/7 ∆V
REF
= 1%, I
OUT
= 3A
LT1585/7-3.3 ∆V
OUT
= 1%, I
OUT
= 3A
LT1585-3.38 ∆V
OUT
= 1%, I
OUT
= 3A
LT1585/7-3.45 ∆V
OUT
= 1%, I
OUT
= 3A
LT1585/7-3.6 ∆V
OUT
= 1%, I
OUT
= 3A ● 1.150 1.300 V
LT1585 ∆V
REF
= 1%, I
OUT
= 4.6A, T
J
≥ 25°C
∆V
REF
= 1%, I
OUT
= 4A, T
J
< 25°C
LT1585-3.3 ∆V
OUT
= 1%, I
OUT
= 4.6A, T
J
≥ 25°C
∆V
OUT
= 1%, I
OUT
= 4A, T
J
< 25°C
LT1585-3.38 ∆V
OUT
= 1%, I
OUT
= 4A
LT1585-3.45 ∆V
OUT
= 1%, I
OUT
= 4A
LT1585-3.6 ∆V
OUT
= 1%, I
OUT
= 4A ● 1.200 1.400 V
LT1584 ∆V
REF
= 1%, I
OUT
= 6A
LT1584-3.3 ∆V
OUT
= 1%, I
OUT
= 6A
LT1584-3.38 ∆V
OUT
= 1%, I
OUT
= 6A
LT1584-3.45 ∆V
OUT
= 1%, I
OUT
= 6A
LT1584-3.6 ∆V
OUT
= 1%, I
OUT
= 6A
T
J
≥ 25°C ● 1.200 1.300 V
T
J
< 25°C ● 1.200 1.350 V
LT1584IT-3.3 T
J
< 25°C ● 1.200 1.450 V
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LT1587CM-3.45#TRPBF

Mfr. #:
Buy LT1587CM-3.45#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
LDO Voltage Regulators 3.45V L/Dropout HS 3A Linear Reg
Lifecycle:
New from this manufacturer.
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