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PDF SPX1084 Data sheet ( Hoja de datos )
| Número de pieza | SPX1084 | |
| Descripción | 5A Low Dropout Voltage Regulator | |
| Fabricantes | Sipex | |
| Logotipo |  |
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SPX1084
5A Low Dropout Voltage Regulator
Adjustable & Fixed Output,
Fast Response
FEATURES
• Adjustable Output Down To 1.2V
• Fixed Output Voltages 1.5, 2.5, 3.3 & 5.0V
• Output Current Of 5A
• Low Dropout Voltage 1.1V Typ.
• Extremely Tight Load And Line Regulation
• Current & Thermal Limiting
• Standard 3-Terminal Low Cost TO-220 & TO-263
• Similar To Industry Standard LT1085/LT1585
APPLICATIONS
• Powering VGA & Sound Card
• Power PC Supplies
• SMPS Post-Regulator
• High Efficiency “Green” Computer Systems
• High Efficiency Linear Power Supplies
• Portable Instrumentation
• Constant Current Regulators
• Adjustable Power Supplies
• Battery charger
PRODUCT DESCRIPTION
The SPX1084 are low power 5A adjustable and fixed voltage regulators with 30V maximum VIN. They are very easy to use. It
requires only 2 external resistors to set the output voltage for adjustable version. The SPX1084 are designed for low voltage
applications that offers lower dropout voltage and faster transient response. This device is an excellent choice for use in powering low
voltage microprocessor that require a lower dropout, faster transient response to regulate from +2.5V to 3.8V supplies and as a post
regulator for switching supplies applications. The SPX1084 features low dropout of a maximum of 1.2 volts.
The SPX1084 offers full protection against over-current faults, reversed input polarity, reversed load insertion, and positive and
negative transient voltage. On-Chip trimming adjusts the reference voltage to 1%. The IQ of this device flows into load, which
increases efficiency.
The SPX1084 are offered in 3-pin TO-220 and TO-263 packages compatible with other 3 terminal regulators. For a similar 5A low
dropout voltage regulator refer to the SPX1084 datasheet. Also for higher current requirements, refer to the SPX1084 datasheet.
PIN CONNECTIONS
TO-263-3 (T)
TO-220-3 (U)
SPX1084
1 23
SPX1084
123
ADJ/GND VOUT VIN
Top View
ADJ/GND VOUT VIN
Front View
Rev. 10/23/00
1 page  
TYPICAL APPLICATIONS
SPX1084
VIN IN SPX1084 OUT
VIN
IN SPX1084
OUT
VOUT
C1
ADJ
R1
C1
ADJ
C2
R1
LOAD
Fig. 4 5A Current output Regulator
VOUT = VREF (1 + R2 ) + IADJ R2
R1
R2
Fig. 5 Typical Adjustable Regulator
(Note A)
VIN
+
10µF
IN OUT
SPX1084
ADJ
5V
R1
121Ω
1%
VOUT
*C1 improves ripple rejection. Xc
should be ~ R 1 at ripple frequency.
R2
365Ω
1%
Note A: VIN(MIN)= (Intended VOUT) + (VDROPOUT (MAX))
150µF
+ 1C01µF*
Fig. 6 Improving Ripple Rejection
VIN
(Note A)
+
IN OUT
SPX1084
ADJ
10µF
TTL
Input
1k
2N3904
1k
5V
121Ω
1%
+
100µF
365Ω
1%
Note A: VIN(MIN)= (Intended VOUT) + (VDROPOUT (MAX))
Fig.7 5V Regulator with Shutdown
Rev. 10/23/00
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet SPX1084.PDF ] | |
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