LD1086
1.5 A adjustable and fixed low drop positive voltage regulator
Datasheet - production data
Description
The LD1086 is a low drop voltage regulator
capable of providing 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
older 3-terminal adjustable regulators, but has
DPAK
better performance in terms of drop and output
TO-220
tolerance. Unlike PNP regulators, where a part of
the output current is wasted as quiescent current,
the LD1086 quiescent current flows into the load,
increasing efficiency. Only a 10 F (minimum)
capacitor is needed for stability. The device is
available in a TO-220, DPAK, DPAK/A, DPAK or
DFN8 (4x4) package. On-chip trimming allows the
DPAK/A
DPAK DFN8 (4x4)
regulator to reach a very tight output voltage
tolerance; within 1% at 25 C. The LD1086 is
available as automotive grade for adjustable
output voltages in the TO-220 and DPAK
Features
packages. The PAT, SYL, SBL statistical tests
Typical dropout: 1.3 V at 1.5 A
have been performed, and the devices are
qualified according to the AEC-Q100 specification
Three-terminal adjustable or fixed output
for the automotive market in the temperature
voltage: 1.8 V, 2.5 V, 3.3 V, 5 V, 12 V
range of - 40 C to 125 C.
Automotive grade (adjustable V in TO-220
OUT
and DPAK packages only)
Output current guaranteed up to 1.5 A
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, DPAK, DPAK/A,
DPAK and DFN8 (4x4)
Pinout compatibility with standard adjustable
voltage regulators
November 2015 DocID6739 Rev 35 1/42
This is information on a product in full production. www.st.comContents LD1086
Contents
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.1 TO-220 (STD-ST dual gauge) type A package information . . . . . . . . . . . 23
7.2 DPAK package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.3 DPAK (SMD 2L STD-ST) type A package information . . . . . . . . . . . . . . 28
7.4 DPAK (SMD 3L STD-ST) type A package information . . . . . . . . . . . . . . 30
7.5 DPAK and DPAK packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.6 DFN8 (4x4) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.7 DFN8 (4x4) packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
2/42 DocID6739 Rev 35