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PDF SPX1585 Data sheet ( Hoja de datos )
| Número de pieza | SPX1585 | |
| Descripción | 5A Low Dropout Voltage Regulator | |
| Fabricantes | Sipex | |
| Logotipo |  |
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SPX1585
5A Low Dropout Voltage Regulator
Adjustable & Fixed Output,
Fast Response
FEATURES
• Adjustable Output Down To 1.2V
• Fixed Output Voltages 1.5V, 2.5V, 3.3V
• Output Current Of 5A
• Low Dropout Voltage 1.1V Typ @ 5A.
• 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 SPX1585 are low power 5A adjustable and fixed voltage regulators that are very easy to use. It requires only 2 external resistors
to set the output voltage for adjustable version. The SPX1585 are designed for low voltage applications that offer 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 SPX1585 features low dropout of a maximum 1.2 volts.
The SPX1585 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 the load, which
increases efficiency.
The SPX1585 are offered in a 3-pin TO-220 and TO-263 package compatible with other 3 terminal regulators. For a 8A low dropout
regulator refer to the SPX1584 data sheet.
PIN CONNECTIONS
TO-263-3 (T)
3
SPX1585 2
1
Top View
VIN
VOUT
ADJ/GND
TO-220-3 (U)
3
SPX1585 2
1
Front View
VIN
VOUT
ADJ/GND
Date: 04/29/04
1 page  
TYPICAL APPLICATIONS
SPX1585
VIN IN SPX1585 OUT
C1
ADJ
R1
LOAD
Fig. 4 5A Current output Regulator
VIN
IN SPX1585
OUT
VOUT
C1
ADJ
C2
R1
VOUT = VREF (1 + R2 ) + IADJ R2
R1
R2
Fig. 5 Typical Adjustable Regulator
(Note A)
VIN
+
10µF
IN OUT
SPX1585
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
SPX1585
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
Date: 04/29/04
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet SPX1585.PDF ] | |
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