LD1086
SERIES
1.5A LOW DROP POSITIVE VOLTAGE
REGULATOR ADJUSTABLE AND FIXED
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TYPICAL DROPOUT 1.3V AT 1.5A
THREE TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE 1.5V, 1.8V, 2.5V, 2.85V,
3.3V, 3.6V, 5V, 8V, 9V, 12V.
GUARANTEED OUTPUT CURRENT UP TO
1.5A
OUPUT TOLERANCE
±1%
AT 25°C AND
±2%
IN FULL TEMPERATURE RANGE
INTERNAL POWER AND THERMAL LIMIT
WIDE OPERATING TEMPERATURE RANGE
-40°C TO 125°C
PACKAGE AVAILABLE: TO-220, D
2
PAK,
D
2
PAK/A, DPAK
PINOUT COMPATIBILITY WITH STANDARD
ADJUSTABLE VREG
TO-220
DPAK
D
2
PAK
D
2
PAK/A
DESCRIPTION
The LD1086 is a LOW DROP Voltage Regulator
able to provide up to 1.5A of Output Current.
Dropout is guaranteed at a maximum of 1.2V at
the maximum output current, decreasing at lower
loads. The LD1086 is pin to pin compatible with
the older 3-terminal adjustable regulators, but has
better performances in term of drop and output
tolerance.
Table 1: Order Codes
TO-220
LD1086V15
LD1086V18
LD1086V25
LD1086V28
LD1086V33
LD1086V36
LD1086V50
LD1086V80
LD1086V90
LD1086V12
LD1086V
D
2
PAK (*)
LD1086D2T15
LD1086D2T18
LD1086D2T25
LD1086D2T28
LD1086D2T33
LD1086D2T36
LD1086D2T50
LD1086D2T80
LD1086D2T90
LD1086D2T12
LD1086D2T
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 LD1086 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, D
2
PAK, D
2
PAK/A
and DPAK. On chip trimming allows the regulator
to reach a very tight output voltage tolerance,
within ±1% at 25°C.
D
2
PAK/A (*)
LD1086D2M15
LD1086D2M18
LD1086D2M25
LD1086D2M28
LD1086D2M33
LD1086D2M36
LD1086D2M50
LD1086D2M80
LD1086D2M90
LD1086D2M12
LD1086D2M
DPAK (*)
LD1086DT15
LD1086DT18
LD1086DT25
LD1086DT28
LD1086DT33
LD1086DT36
LD1086DT50
LD1086DT80
LD1086DT90
LD1086DT12
LD1086DT
OUTPUT VOLTAGE
1.5 V
1.8 V
2.5 V
2.85 V
3.3 V
3.6 V
5.0 V
8.0 V
9.0 V
12.0 V
ADJ
(*) Available in Tape & Reel with the suffix "TR".
February 2005
Rev. 13
1/21
STMICROELECTRONICS [ STMICROELECTRONICS ]
