LX8580 Microsemi Corporation, LX8580 Datasheet

LX8580

Manufacturer Part Number

LX8580

Description

7a Very Low Dropout Positive Adjustable Regulator

Manufacturer

Microsemi Corporation

Datasheet

1.LX8580.pdf (4 pages)

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Rev. 1.0

H E

The LX8580 is a high-performance, very

low dropout voltage regulator, designed for

use with advanced microprocessors. This

product can be used with separate voltage

supplies for the control and power sections,

allowing a power section dropout voltage

as low as 100mV. The LX8580 can also be

used in a single voltage supply configuration,

with a dropout performance similar to that

of the LX8584 (1.3V at 7A).

terminal TO-220 package, which allows the

NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.

The LX8580 is supplied in a five-

11/99

N F I N I T E

CTRL

OUT

PWR

³ V

= V

³ V

OUT

REF

11861 W

O W E R

OUT

+ 1.3V Max







1 +

+ V

0 to 125

ESTERN

D E S C R I P T I O N

DROPOUT

O F

(°C)

P E C I A L







I N

+ I

ADJ

VENUE

N N O V A T I O N

I N I T Y

x R

PA C K A G E O R D E R I N F O R M AT I O N

0.1V - 0.8V

A PA B I L I T I E S O F T H E

, G

Dropout

Voltage

implementation of remote (Kelvin) voltage

sensing. This sensing compensates for

output voltage variations due to load

changes and resistive voltage drops in

connectors and board traces. Typical load

regulation measured at the sense pin is less

than 1mV for a load current step of 7mA

to 7A.

secondary 2 - 2.5V low voltage supply on a

motherboard where a 3.3V supply is already

available.

M A L L E R

ARDEN

The LX8580 is ideal for generating a

P R O D U C T H I G H L I G H T

LDO T

ROVE

I C R O E L E C T R O N I C S

CTRL

PWR

LX8580

ADJUST

, CA. 92841, 714-898-8121, F

Plastic TO-220

5-pin

LX8580-00CP

H E R M A L

OUTPUT

SENSE

7A V

LX8580 T

ERY

I S S I PAT I O N

R O D U C T I O N

LX8580-00CDD

Plastic TO-263

5-pin

ROPOUT

L L O W

N C

: 714-893-2570

44%

I I I I I Low Dropout, 800mV Max. at 7A

I I I I I Fast Transient Response

I I I I I Remote Sensing

1mV Load Regulation

Adjustable Output

No Supply Sequencing Problems in Dual

I Microprocessor Supplies

I 3.3V to 2.5V Processor Power Supplies

I High-Current Regulators

I Post Regulators for Switching Supplies

LOAD

OSITIVE

Output Current in Dual Supply Mode

Supply Mode

A P P L I C A T I O N S

K E Y F E A T U R E S

A T A

DJUSTABLE

H E E T

LX8580

OUT

EGULATOR

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LX8580 Summary of contents

Page 1

... This product can be used with separate voltage supplies for the control and power sections, allowing a power section dropout voltage as low as 100mV. The LX8580 can also be used in a single voltage supply configuration, with a dropout performance similar to that of the LX8584 (1.3V at 7A). ...

Page 2

... LX8580 Power Dissipation ...................................................................................... Internally Limited V Input Voltage ........................................................................................................... 7V PWR V Input Voltage ......................................................................................................... 13V CTRL Operating Junction Temperature Plastic (P Package) ................................................................................................ 150°C Storage Temperature Range ...................................................................... -65° ...

Page 3

... LOAD 3.3V CTRL PWR ADJ ) or minimum power voltage (V CTRL LX8580 R EGULATOR ≤ 125°C. Low duty cycle pulse testing A LX8580 Min. Typ. Max. = 25°C 1.243 1.250 1.257 J 1.237 1.250 1.263 = 10mA 10mA to 7A 1.237 1.250 1.263 = 10mA 25° ...

Page 4

... For the device to regulate, the voltage at this pin must be between 1.0V and 1.3V greater than the output voltage This is the collector of the power section of the LX8580. The output load current is supplied through this pin. For the device to PWR regulate, the voltage at this pin must be between 0.1V and 0.8V greater than the output voltage (higher output currents require higher ...

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