Freelance Electronics Components Distributor
Closed Dec 25th-26th
800-300-1968

We Stock Hard to Find Parts
My Account | My Orders | My Cart
Questions? (800) 300-1968

LT1580CQ

Part # LT1580CQ
Description IC LDO REGULATOR 7A ADJ 5DDPAK
Category IC
Availability In Stock
Qty 9
Qty Price
1 + $3.27055
Manufacturer Available Qty
Linear Technology
  • Shipping Freelance Stock: 9
    Ships Immediately

Related Items

LT1580CT
Linear Technology
IC
LT1580CT
$3.79864
LT1580CT7
Linear Technology
IC
LT1580CT7
 
LT1580CT7-2.5
Linear Technology
IC
LT1580CT7-2.5
$14.78178
LT1580IQ
Linear Technology
IC
LT1580IQ
$6.83205
LT1585ACM-1.5
Linear Technology
IC
LT1585ACM-1.5
$5.63260
LT1580IR-2.5
Linear Technology
RECTIFIER
LT1580IR-2.5
$12.61420


Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

1
LT1580/LT1580-2.5
■
Low Dropout, 540mV at 7A Output Current
■
Fast Transient Response
■
Remote Sense
■
1mV Load Regulation
■
Fixed 2.5V Output and Adjustable Output
■
No Supply Sequencing Problems in
Dual Supply Mode
The LT®1580 is a 7A low dropout regulator designed to
power the new generation of microprocessors. The drop-
out voltage of this device is 100mV at light loads rising to
just 540mV at 7A. To achieve this dropout, a second low
current input voltage 1V greater than the output voltage, is
required. The device can also be used as a single supply
device where dropout is comparable to an LT1584.
Several other new features have been added to the LT1580.
A remote SENSE pin is brought out. This feature virtually
eliminates output voltage variations due to load changes.
Typical load regulation, measured at the SENSE pin, for a
load current step of 100mA to 7A is less than 1mV.
The LT1580 has fast transient response, equal to the
LT1584. On fixed voltage devices, the ADJ pin is brought
out. A small capacitor on the ADJ pin further improves
transient response.
This device is ideal for generating processor supplies of
2V to 3V on motherboards where both 5V and 3.3V
supplies are available.
7A, Very Low
Dropout Regulator
FEATURES
DESCRIPTION
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
Pentium is a registered trademark of Intel Corporation.
PowerPC is a trademark of IBM Corporation.
APPLICATIONS
U
■
Microprocessor Supplies
■
Post Regulators for Switching Supplies
■
High Current Regulators
■
5V to 3.XXV for Pentium
®
Processors Operating
at 90MHz to 166MHz and Beyond
■
3.3V to 2.9V for Portable Pentium Processor
■
PowerPC
TM
Series Power Supplies
OUTPUT CURRENT (A)
0
MINIMUM POWER VOLTAGE (V)
1.0
0
1
5
7
1580 G03
4
2
3
6
0.5
DATA SHEET LIMIT
T
J
= 25°C
T
J
= 125°C
INDICATES GUARANTEED TEST POINTS
0°C ≤ T
J
≤ 125°C
Dropout Voltage—
Minimum Power Voltage
TYPICAL APPLICATION
U
2.5V Microprocessor Supply
V
OUT
SENSE
ADJGND
0.1µF
1580 TA01
10µF
TANT
330µF
OS-CON
2.5V/7A
LT1580-2.5
100µF TANT
AVX TPS
× 7
V
POWER
3.3V
7A
5V
0.2A
V
CONTROL
+
+
+
2
LT1580/LT1580-2.5
ABSOLUTE MAXIMUM RATINGS
W
WW
U
V
POWER
Input Voltage ................................................ 6V
V
CONTROL
Input Voltage ........................................... 13V
Storage Temperature ............................ –65°C to 150°C
Operating Junction Temperature Range
Control Section
LT1580C............................................ 0°C to 125°C
LT1580I........................................ –40°C to 125°C
Power Transistor
LT1580C............................................ 0°C to 150°C
LT1580I........................................ –40°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PRECONDITIONING
UUU
100% Thermal Limit Functional Test
ELECTRICAL CHARACTERISTICS
(Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Voltage: LT1580-2.5 V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 0mA 2.485 2.500 2.515 V
V
CONTROL
= 4V to 12V, V
POWER
= 3V to 5.5V, I
LOAD
= 0mA to 4A ● 2.475 2.500 2.525 V
V
CONTROL
= 4V to 12V, V
POWER
= 3V to 5.5V, 2.475 2.500 2.525 V
I
LOAD
= 0mA to 7A, 0°C ≤ T
J
≤ 125°C
V
CONTROL
= 4V to 12V, V
POWER
= 3V to 5.5V, 2.460 2.500 2.525 V
I
LOAD
= 0mA to 6.5A, –40°C ≤ T
J
< 0°C
Reference Voltage: LT1580 V
CONTROL
= 2.75V, V
POWER
= 2V, I
LOAD
= 10mA 1.243 1.250 1.257 V
(V
ADJ
= 0V) V
CONTROL
= 2.7V to 12V, V
POWER
= 1.75V to 5.5V, I
LOAD
= 10mA to 4A ● 1.237 1.250 1.263 V
V
CONTROL
= 2.7V to 12V, V
POWER
= 2.05V to 5.5V, 1.237 1.250 1.263 V
I
LOAD
= 10mA to 7A, 0°C ≤ T
J
≤ 125°C
V
CONTROL
= 2.7V to 12V, V
POWER
= 2.05V to 5.5V, 1.232 1.250 1.263 V
I
LOAD
= 10mA to 6.5A, –40°C ≤ T
J
< 0°C
Line Regulation: LT1580-2.5 V
CONTROL
= 3.65V to 12V, V
POWER
= 3V to 5.5V, I
LOAD
= 10mA ● 13 mV
LT1580 V
CONTROL
= 2.5V to 12V, V
POWER
= 1.75V to 5.5V, I
LOAD
= 10mA ● 13 mV
PACKAGE/ORDER INFORMATION
W
U
U
ORDER PART
NUMBER
ORDER PART
NUMBER
LT1580CT
LT1580IT
LT1580CQ
LT1580IQ
ORDER PART
NUMBER
ORDER PART
NUMBER
LT1580CT7-2.5
LT1580IT7-2.5
LT1580CR-2.5
LT1580IR-2.5
Consult factory for Military grade parts.
θ
JA
= XX°C/ W
R PACKAGE
7-LEAD PLASTIC DD
FRONT VIEW
NC
V
POWER
ADJ
V
OUT
V
CONTROL
GND
SENSE
7
6
5
4
3
2
1
TAB
IS
OUTPUT
θ
JA
= XX°C/ W
Q PACKAGE
5-LEAD PLASTIC DD
TAB
IS
OUTPUT
FRONT VIEW
V
POWER
V
CONTROL
V
OUT
ADJ
SENSE
5
4
3
2
1
θ
JA
= 50°C/ W
T PACKAGE
5-LEAD PLASTIC TO-220
V
POWER
V
CONTROL
V
OUT
ADJ
SENSE
FRONT VIEW
5
4
3
2
1
TAB
IS
OUTPUT
T7 PACKAGE
7-LEAD PLASTIC TO-220
NC
V
POWER
ADJ
V
OUT
V
CONTROL
GND
SENSE
FRONT VIEW
7
6
5
4
3
2
1
TAB
IS
OUTPUT
θ
JA
= 50°C/ W
3
LT1580/LT1580-2.5
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Load Regulation: LT1580-2.5 V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 0mA to 7A ● 15mV
LT1580 (V
ADJ
= 0V) V
CONTROL
= 2.75V, V
POWER
= 2.1V, I
LOAD
= 10mA to 7A ● 15mV
Minimum Load Current: LT1580 V
CONTROL
= 5V, V
POWER
= 3.3V, V
ADJ
= 0V (Note 3) ● 510mA
Control Pin Current: LT1580-2.5 V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 100mA, 0°C ≤ T
J
≤ 125°C 6 10 mA
(Note 4) V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 100mA, –40°C ≤ T
J
< 0°C12mA
V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C3060mA
V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C70mA
V
CONTROL
= 5V, V
POWER
= 3V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C3370mA
V
CONTROL
= 5V, V
POWER
= 3V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C80mA
V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 7A, 0°C ≤ T
J
≤ 125°C 60 120 mA
V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 6.5A, –40°C ≤ T
J
< 0°C 130 mA
Control Pin Current: LT1580 V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 100mA, 0°C ≤ T
J
≤ 125°C 6 10 mA
(Note 4) V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 100mA, –40°C ≤ T
J
< 0°C12mA
V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C3060mA
V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C70mA
V
CONTROL
= 2.75V, V
POWER
= 1.75V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C3370mA
V
CONTROL
= 2.75V, V
POWER
= 1.75V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C80mA
V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 7A, 0°C ≤ T
J
≤ 125°C 60 120 mA
V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 6.5A, –40°C ≤ T
J
< 0°C 130 mA
Ground Pin Current: LT1580-2.5 V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 0mA ● 610mA
ADJ Pin Current: LT1580 (V
ADJ
= 0V) V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 10mA ● 50 120 µA
Current Limit: LT1580-2.5 V
CONTROL
= 5V, V
POWER
= 3.3V, ∆V
OUT
= 100mV, 0°C ≤ T
J
≤ 125°C 7.1 8 A
V
CONTROL
= 5V, V
POWER
= 3.3V, ∆V
OUT
= 100mV, –40°C ≤ T
J
< 0°C 6.6 A
LT1580 (V
ADJ
= 0V) V
CONTROL
= 2.75V, V
POWER
= 2.05V, ∆V
OUT
= 100mV, 0°C ≤ T
J
≤ 125°C 7.1 8 A
V
CONTROL
= 2.75V, V
POWER
= 2.05V, ∆V
OUT
= 100mV, –40°C ≤ T
J
< 0°C 6.6 A
Ripple Rejection: LT1580-2.5 V
C
= V
P
= 5V Avg, V
RIPPLE
= 1V
P-P
, I
OUT
= 4A, T
J
= 25°C6080dB
LT1580 V
C
= V
P
= 3.75V Avg, V
RIPPLE
= 1V
P-P
, V
ADJ
= 0V, I
OUT
= 4A, T
J
= 25°C6080 dB
Thermal Regulation 30ms Pulse 0.002 0.020 %/W
Thermal Resistance, Junction-to-Case T, T7 Packages, Control Circuitry/Power Transistor 0.65/2.70 °C/W
Dropout Voltage (Note 2)
Minimum V
CONTROL
: LT1580-2.5 V
POWER
= 3.3V, I
LOAD
= 100mA, 0°C ≤ T
J
≤ 125°C 1.00 1.15 V
(V
CONTROL
– V
OUT
)V
POWER
= 3.3V, I
LOAD
= 100mA, –40°C ≤ T
J
< 0°C 1.20 V
V
POWER
= 3.3V, I
LOAD
= 1A, 0°C ≤ T
J
≤ 125°C 1.00 1.15 V
V
POWER
= 3.3V, I
LOAD
= 1A, –40°C ≤ T
J
< 0°C 1.20 V
V
POWER
= 3.3V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C 1.06 1.20 V
V
POWER
= 3.3V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C 1.25 V
V
POWER
= 3.3V, I
LOAD
= 7A, 0°C ≤ T
J
≤ 125°C 1.15 1.30 V
V
POWER
= 3.3V, I
LOAD
= 6.5A, –40°C ≤ T
J
< 0°C 1.35 V
Minimum V
CONTROL
: LT1580 V
POWER
= 2.05V, I
LOAD
= 100mA, 0°C ≤ T
J
≤ 125°C 1.00 1.15 V
(V
CONTROL
– V
OUT
)V
POWER
= 2.05V, I
LOAD
= 100mA, –40°C ≤ T
J
< 0°C 1.20 V
(V
ADJ
= 0V) V
POWER
= 2.05V, I
LOAD
= 1A, 0°C ≤ T
J
≤ 125°C 1.00 1.15 V
V
POWER
= 2.05V, I
LOAD
= 1A, –40°C ≤ T
J
< 0°C 1.20 V
V
POWER
= 2.05V, I
LOAD
= 2.75A, 0°C ≤ T
J
≤ 125°C 1.05 1.18 V
V
POWER
= 2.05V, I
LOAD
= 2.75A, –40°C ≤ T
J
< 0°C 1.23 V
V
POWER
= 2.05V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C 1.06 1.20 V
V
POWER
= 2.05V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C 1.25 V
V
POWER
= 2.05V, I
LOAD
= 7A, 0°C ≤ T
J
≤ 125°C 1.15 1.30 V
V
POWER
= 2.05V, I
LOAD
= 6.5A, –40°C ≤ T
J
< 0°C 1.35 V
123456NEXT
Address
Freelance Electronics
13197 Sandoval Street
Santa Fe Springs, CA 90670
 
Hours of Operation  (Holiday Hours)
Monday-Friday 7:30am-4:30pm PST
(Deadline for next day shipment 2:00pm PST)
Seal
Government Cage code#-1V4R6
Duns Number# 788130532
Certified Small Disadvantaged Business
Customer Service
Company
Information
Connect with Us
Twitter Facebook Instagra,
This site is protected by Trustwave's Trusted Commerce program