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PDF ZSAT500 Data sheet ( Hoja de datos )
| Número de pieza | ZSAT500 | |
| Descripción | ENHANCED POSITIVE LOCAL VOLTAGE REGULATOR | |
| Fabricantes | Zetex Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ZSAT500 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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5 VOLT ENHANCED POSITIVE
LOCAL VOLTAGE REGULATOR
ISSUE 1 - DECEMBER 1995
ZSAT500
DEVICE DESCRIPTION
The ZSAT500 is an enhanced three terminal
fixed positive 5 volt regulator. The device is
designed particularly for use in Satellite
receiver low noise blocks where a high
degree of supply rejection is required to
extended frequencies. The device has been
improved to give superior performance with
ripple rejection of 65dB up to 22KHz , and
40dB up to 200KHz.
The device features internal circuit current
limit and thermal shutdown making it almost
impossible to destroy. The ZSAT500 shows
performance characteristics superior to
other local voltage regulators. The initial
output voltage is maintained to within 2.5%
with a quiescent current of typically 350µA.
Line and load regulation is superior to that
of other devices, with load current up to a
maximum 200mA.
For the LNB application the regulator is
offered in a surface mount SOT223 package
www.DataSheet4U.com
which permits power dissipation up to 3
watts. Additionally the device can be made
available in an SO8 surface mount package,
as well as TO92 for through hole application.
SCHEMATIC DIAGRAM
Q14
Q18
Q13
Q19
Q25
Q12
R6
Q16 Q17
R3
Q11
Q20 Q21
The devices are suited to local voltage
regulation applications, where problems
could be encountered with distributed single
source regulation, as well as more general
voltage regulation applications.
FEATURES
• Enhanced ripple rejection - 65dB at
22kHz
• Small outline SO8 and SOT223
packages
• TO92 package
• 5 volt output
• Output current upto 200mA
• Tight initial tolerance
• Low quiescent current
• -55 to 125°C temperature range
• No external components
• Internal thermal shutdown
• Internal short circuit current limit
APPLICATIONS
• Satellite receivers
• Low noise blocks
Vin
Q9
Q4
Q5
Q10
Q8
R14
Q6 Q7
Vout
R7 R4
R5
Q1
R1
C1
Q3
R2
R9
R13
Gnd
4-299
1 page  
APPLICATIONS
Fixed Output Regulator
ZSAT500
Adjustable Output Regulator
Input
ZSR***
Output
Input
ZSR***
Gnd
Iq
Vo= Vreg + (Vreg/R1 + Iq)R2
Current Regulator
Output
R1
R2
Gnd
Input
ZSR***
Iq
Io= (Vreg/R1) + Iq
R1
Output
4-303
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet ZSAT500.PDF ] | |
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