LD1580 Datasheet, PDF (1/18 Pages) STMicroelectronics – 7 A VERY LOW DROP POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED

LD1580
7 A VERY LOW DROP POSITIVE VOLTAGE REGULATOR
ADJUSTABLE AND FIXED
s OUTPUT CURRENT LIMIT
s LOW DROPOUT VOLTAGE: TYPICALLY
400mV AT 7A OUTPUT CURRENT
s OUTPUT VOLTAGE REMOTE SENSE PIN
s FAST TRANSIENT RESPONSE
s THERMAL SHUTDOWN PROTECTION
WITH HYSTERESIS
s WIDE OPERATING TEMPERATURE RANGE
-40°C TO 125°C
s NO SUPPLY SEQUENCING PROBLEMS IN
DUAL SUPPLY MODE
s OUTPUT VOLTAGES AVAILABLE 1.5 V, 1.8V,
2.5 V, 3.0 V, 3.3 V ADJUSTABLE.
DESCRIPTION
The LD1580 is a very low dropout positive linear
voltage regulator particularly suitable in
applications requiring output currents up to 7 A.
The LD1580 typical dropout voltage is 400mV at
7A
while
it
decreases
at
lighter loads.
This very low dropout is achieved thanks to a
second input voltage pin, named V_CONTROL,
which is also responsable of the output power
stage driving.
The LD1580 is provided with an output voltage
remote sense pin which reduces dramatically any
PRELIMINARY DATA
HEPTAWATT^TM
PENTAWATT^TM
5
1
P²PAK
SPAK-5L
SPAK-7L
output voltage variations that could occur due to
load changes.
On fixed voltage devices, the ADJ pin is still
available. A small capacitor on this pin helps to
improve transient response.
SCHEMATIC DIAGRAM
November 2002
1/18
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.