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PDF SC1118 Data sheet ( Hoja de datos )
| Número de pieza | SC1118 | |
| Descripción | 1A Low Dropout / Low Quiescent Current Voltage Regulator | |
| Fabricantes | Semtech | |
| Logotipo |  |
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SC1118
1A (Sink & Source) Low Dropout, Low
Quiescent Current Voltage Regulator
POWER MANAGEMENT
Description
Features
The SC1118 family of low dropout regulators has the
unique capability of maintaining output regulation while
sourcing or sinking current. The 2.85V output voltage
option is ideal for use as a Boulay termination of up to
27 SCSI data lines. The regulator maintains regulation
while both sourcing and sinking current, enabling the use
of active negation drivers for improved noise immunity
on the data lines. Regulation of output voltage is
maintained for TERMPWR voltages as low as 4.0V. When
unloaded, quiescent supply current is a low 2mA,
allowing continuous connection to the TERMPWR lines.
An ultra low power shutdown mode is also available on
the SO-8 version. In shutdown the output is high
impedance and supply current drops to 100µA (typ.).
Current limits in both sourcing and sinking modes, plus
on-chip thermal shutdown make the circuit tolerant of
output fault conditions.
Regulates while sourcing or sinking current
Provides termination for up to 27 SCSI lines
2mA quiescent current
Ultra low power shutdown mode
Current limit and thermal shutdown protection
Stable for any CLOAD ≥ 0.22µF
Fast settling time
SOT-223 and SO-8 surface mount packages
Applications
Active negation SCSI terminations
Computers
Disk drives
CD-ROM drives
Supply splitter
The SC1118 is available in the 3-lead SOT-223 and
8-lead SO-8 packages.
Typical Application Circuits
U1 SC1118S-x.x
VIN
1, 4 IN
OUT 2
C1
1uF
8 EN GND NC 5
3, 6, 7
VOUT
C2
1uF
VIN
U1 SC1118ST-x.x
31
IN OUT
C1
1uF
GND
2, TAB
VOUT
C2
1uF
U1 SC1118S
VIN
1, 4
IN
2
OUT
C1
1uF
8 EN GND FB 5
3, 6, 7
VOUT
R1 C2
1uF
R2
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1
VOUT
=
VFB
•
1 +
R1
R2
+
IFB
• R1
www.DataSheet4U.com
www.semtech.com
1 page  
POWER MANAGEMENT
Outline Drawing - SOT-223
SC1118
Land Pattern - SOT-223
2004 Semtech Corp.
5
www.semtech.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet SC1118.PDF ] | |
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