LD1085C Datasheet, PDF (1/15 Pages) STMicroelectronics – 3A LOW DROP POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED

LD1085C
SERIES
3A LOW DROP POSITIVE VOLTAGE
REGULATOR ADJUSTABLE AND FIXED
s TYPICAL DROPOUT 1.3V (AT 3A)
s THREE TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE 1.5V, 1.8V, 2.5V, 2.85V,
3.3V, 3.6V, 5V, 8V, 9V, 12V.
s GUARANTEED OUTPUT CURRENT UP TO
3A
s OUPUT TOLERANCE ±2% AT 25°C AND
±3% IN FULL TEMPERATURE RANGE
s INTERNAL POWER AND THERMAL LIMIT
s WIDE OPERATING TEMPERATURE RANGE
-40°C TO 125°C
s PACKAGE AVAILABLE : DPAK
s PINOUT COMPATIBILITY WITH STANDARD
ADJUSTABLE VREG
DESCRIPTION
The LD1085 is a LOW DROP Voltage Regulator
able to provide up to 3A of Output Current.
Dropout is guaranteed at a maximum of 1.5V at
the maximum output current, decreasing at lower
loads. The LD1085 is pin to pin compatible with
the older 3-terminal adjustable regulators, but has
better performances in term of drop and output
tolerance .
DPAK
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 LD1085 quiescent current flows into
the load, so increase efficiency. Only a 10µF
minimum capacitor is need for stability.
The device is supplied in DPAK. On chip trimming
allows the regulator to reach a very tight output
voltage tolerance, within ±2% at 25°C.
SCHEMATIC DIAGRAM
July 2002
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