LD1086xx
1.5A Low drop positive voltage regulator adjustable and fixed
Features
■
Typical dropout 1.3V at 1.5A
■
Three terminal adjustable or fixed output
voltage 1.5V, 1.8V, 2.5V, 3.3V, 3.6V, 5V, 8V,
9V, 12V.
■
Guaranteed output current up to 1.5A
DPAK
■
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
TO-220
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.
D2PAK/A
D2PAK
the load, so increase efficiency. Only a 10µF
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.
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
Table 1.
Device summary
Part number
LD1086XX
LD1086XX12
LD1086XX36
LD1086XX15
LD1086XX50
LD1086XX18
LD1086XX80
LD1086XX25
July 2007
LD1086XX33
LD1086XX90
Rev. 18
1/37
www.st.com
37