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LD1085P Datasheet(PDF) 1 Page - STMicroelectronics

No. de pieza LD1085P
Descripción Electrónicos  3 A low drop positive voltage regulator adjustable and fixed
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LD1085P Datasheet(HTML) 1 Page - STMicroelectronics

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December 2007
Rev 19
1/27
27
LD1085xx
3 A low drop positive voltage regulator adjustable and fixed
Features
Typical dropout 1.3 V (at 3 A)
Three terminal adjustable or fixed output
voltage 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V.
Guaranteed output current up to 3 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, TO-220FP,
DPAK, D2PAK, D2PAK/A
Pinout compatibility with standard adjustable
VREG
Description
The LD1085xx is a low drop voltage regulator
able to provide up to 3 A of output current.
Dropout is guaranteed at a maximum of 1.2 V at
the maximum output current, decreasing at lower
loads. The LD1085xx 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 LD1085xx quiescent current flows
into the load, so increase efficiency. Only a 10 µF
minimum capacitor is need for stability.
The device is supplied in TO-220, TO-220FP,
DPAK, D2PAK and D2PAK/A. On chip trimming
allows the regulator to reach a very tight output
voltage tolerance, within ±1% at 25 °C.
TO-220FP
D2PAK/A
TO-220
D2PAK
DPAK
Table 1.
Device summary
Part number
LD1085XX
LD1085XX25
LD1085XX15
LD1085XX33
LD1085XX18
LD1085XX50
www.st.com


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