LD1585C Datasheet, PDF (1/17 Pages) STMicroelectronics – 5A LOW DROPOUT FAST RESPONSE POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED

LD1585C
SERIES
5A LOW DROPOUT FAST RESPONSE
POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED
s TYPICAL DROPOUT 1.2V
s FAST TRANSIENT RESPONSE
s THREE TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE 1.5V 1.8V, 2.5V, 2.85V,
3.3V, 5V, 8V, 9V, 12V.
s GUARANTEED OUTPUT CURRENT UP TO
5A
s OUPUT TOLERANCE ±1% AT 25°C AND
±2% IN FULL TEMPERATURE RANGE
s INTERNAL POWER AND THERMAL LIMIT
s WIDE OPERATING TEMPERATURE RANGE
0°C TO 125°C
s PACKAGE AVAILABLE : TO-220, D²PAK,
D²PAK/A
s PINOUT COMPATIBILITY WITH STANDARD
ADJUSTABLE VREG
DESCRIPTION
The LD1585C is a LOW DROP Voltage Regulator
able to provide up to 5A of Output Current.
Dropout is guaranteed at a maximum of 1.4V at
the maximum output current, decreasing at lower
loads. The device has been improved to be
utilized in low voltage applications where transient
response and minimum input voltage are critical.
The most important feature of the device consist in
lower dropout voltage and very fast transient
TO-220
D²PAK
D²PAK/A
response. 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 LD1585C quiescent current
flows into the load, so increase efficiency. Only a
10µF minimum capacitor is need for stability.
The device is supplied in TO-220, D²PAK and
D²PAK/A. On chip trimming allows the regulator to
reach a very tight output voltage tolerance, within
±1% at 25°C.
SCHEMATIC DIAGRAM
September 2003
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