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PDF LD1086xx Data sheet ( Hoja de datos )
| Número de pieza | LD1086xx | |
| Descripción | 1.5A Low drop positive voltage regulator adjustable and fixed | |
| Fabricantes | STMicroelectronics | |
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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
■ 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 1.5A 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.
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
TO-220
DPAK
D2PAK
D2PAK/A
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.
Table 1. Device summary
July 2007
LD1086XX
LD1086XX12
LD1086XX15
LD1086XX18
LD1086XX25
Part number
Rev. 18
LD1086XX33
LD1086XX36
LD1086XX50
LD1086XX80
LD1086XX90
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LD1086xx
3 Maximum ratings
Maximum ratings
Table 2. Absolute maximum ratings
Symbol
Parameter
VI
IO
PD
TSTG
TOP
DC Input voltage
Output current
Power dissipation
Storage temperature range
Operating junction temperature range
Value
30
Internally Limited
Internally Limited
-55 to +150
-40 to +125
Unit
V
mA
mW
°C
°C
Note:
Absolute Maximum Ratings are those values beyond which damage to the device may
occur. Functional operation under these condition is not implied
Table 3. Thermal data
Symbol
Parameter
RthJC
RthJA
Thermal resistance junction-case
Thermal resistance junction-ambient
TO-220
3
50
D2PAK
D2PAK/A
3
62.5
DPAK
8
Unit
°C/W
°C/W
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LD1086xx
Electrical characteristics
Table 8.
Symbol
Electrical characteristics of LD1086#36
(VI=6.6V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified).
Parameter
Test
Min. Typ.
Max.
Unit
VO
ΔVO
ΔVO
Vd
Iq
Isc
SVR
eN
S
Output voltage (1)
IO = 0 mA, TJ = 25°C
IO = 0 to 1.5A, VI = 5.2 to 30V
Line regulation
IO = 0 mA, VI = 5.2 to 18V, TJ = 25°C
IO = 0 mA, VI = 5.2 to 18V
Load regulation
IO = 0 to 1.5A, TJ = 25°C
IO = 0 to 1.5A
Dropout voltage
IO = 1.5A
Quiescent current
VI ≤30V
Short circuit current
VI - VO = 5V
VI - VO = 25V
Thermal regulation
TA = 25°C, 30ms pulse
Supply voltage rejection
f = 120 Hz, CO = 25 μF, IO = 1.5A
VI = 8.6 ± 3V
RMS Output noise voltage (% of
VO)
TA = 25°C, f =10Hz to 10KHz
Temperature stability
3.564
3.528
1.5
0.05
60
S Long term stability
TA = 125°C, 1000Hrs
1. See short-circuit current curve for available output current at fixed dropout.
3.6 3.636
3.6 3.672
0.5 10
1 10
3 15
7 25
1.3 1.5
5 10
2
0.2
0.01 0.04
78
0.003
0.5
0.5
V
V
mV
mV
mV
mV
V
mA
A
A
%/W
dB
%
%
%
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| Páginas | Total 37 Páginas | |
| PDF Descargar | [ Datasheet LD1086xx.PDF ] | |
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