LD1084
SERIES
5A LOW DROP POSITIVE VOLTAGE
REGULATOR ADJUSTABLE AND FIXED
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TYPICAL DROPOUT 1.3V (AT 5A)
THREE TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE 1.5, 1.8V, 2.5V, 2.85V,
3.3V, 3.6V, 5V, 8V, 9V, 12V.
GUARANTEED OUTPUT CURRENT UP TO
5A
OUPUT TOLERANCE
鹵1%
AT 25擄C AND
鹵2%
IN FULL TEMPERATURE RANGE
INTERNAL POWER AND THERMAL LIMIT
WIDE OPERATING TEMPERATURE RANGE
-40擄C TO 125擄C
PACKAGE AVAILABLE : TO-220, D
2
PAK,
D
2
PAK/A
PINOUT COMPATIBILITY WITH STANDARD
ADJUSTABLE VREG
D
2
PAK
TO-220
D
2
PAK/A
DESCRIPTION
The LD1084 is a LOW DROP Voltage Regulator
able to provide up to 5A of Output Current.
Dropout is guaranteed at a maximum of 1.5V at
the maximum output current, decreasing at lower
loads. The LD1084 is pin to pin compatible with
the older 3-terminal adjustable regulators, but has
better performances in term of drop and output
tolerance .
A 2.85V output version is suitable for SCSI-2
active termination. Unlike PNP regulators, where
a part of the output current is wasted as quiescent
current, the LD1084 quiescent current flows into
the load, so increase efficiency. Only a 10碌F
minimum capacitor is need for stability.
The device is supplied in TO-220, D
2
PAK and
D
2
PAK/A. On chip trimming allows the regulator to
reach a very tight output voltage tolerance, within
鹵1% at 25擄C.
SCHEMATIC DIAGRAM
May 2003
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