LD1086XX_08 Datasheet, PDF (1/39 Pages) STMicroelectronics – 1.5 A low drop positive voltage regulator adjustable and fixed

LD1086xx
1.5 A low drop positive voltage regulator adjustable and fixed
Features
■ Typical dropout 1.3 V at 1.5 A
■ Three terminal adjustable or fixed output
voltage 1.5 V, 1.8 V, 2.5 V, 3.3 V, 3.6 V, 5 V,
8 V, 12 V
■ Automotive Grade product: adjustable V_OUT
only in TO-220 and DPAK packages
■ Guaranteed output current up to 1.5A
■ Output 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, D²PAK, D²PAK/A,
DPAK
■ Pinout compatibility with standard adjustable
VREG
Description
The LD1086 is a LOW DROP voltage regulator
able to provide up to 1.5 A of output current.
Dropout is guaranteed at a maximum of 1.2 V 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.
A 2.85 V 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
TO-220
DPAK
D²PAK
D²PAK/A
the load, so increase efficiency. Only a 10 µF
minimum capacitor is need for stability. The
device is supplied in TO-220, D²PAK, D²PAK/A
and DPAK. On chip trimming allows the regulator
to reach a very tight output voltage tolerance,
within ± 1 % at 25 °C.
The LD1086 is available as Automotive Grade in
TO-220 and DPAK packages, for the option of
adjustable output voltage whose commercial Part
Numbers are shown in the Table 18 (order
codes). These devices are qualified according to
the specification AEC-Q100 of the Automotive
market, in the temperature range -40 °C to 125
°C, and the statistical tests PAT, SYL, SBL are
performed.
Table 1. Device summary
LD1086XX
LD1086XX12
LD1086XX15
Part number
LD1086XX18
LD1086XX25
LD1086XX33
LD1086XX36
LD1086XX50
LD1086XX80
February 2008
Rev 21
1/39
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