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參數資料
| 型號： | TL2217-285 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | FIXED-VOLTAGE REGULATORS FOR SCSI ACTIVE TERMINATION |
| 中文描述： | 固定用于SCSI主動終止電壓調節器 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 79K |
| 代理商： | TL2217-285 |
TL2217-285
FIXED-VOLTAGE REGULATORS
FOR SCSI ACTIVE TERMINATION
SLVS066F – NOVEMBER 1991 – REVISED JULY 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Fully Matches Parameters for SCSI
Alternative 2 Active Termination
Fixed 2.85-V Output
±
1.5% Maximum Output Tolerance
at T
J
= 25
°
C
1-V Maximum Dropout Voltage
500-mA Output Current
±
3% Absolute Output Variation
Internal Overcurrent-Limiting Circuitry
Internal Thermal-Overload Protection
Internal Overvoltage Protection
description
The TL2217-285 is a low-dropout (1 V) fixed-
voltage regulator specifically designed for small
computer systems interface (SCSI) alternative 2
active signal termination. The TL2217-285 1-V
maximum dropout ensures compatibility with
existing SCSI systems, while providing a wide
TERMPWR voltage range. At the same time, the
±
1.5% initial tolerance on its 2.85-V output voltage
ensures a tighter line-driver current tolerance,
thereby increasing system noise margin.
The fixed 2.85-V output voltage of TL2217-285
supports the SCSI alternative 2 termination
standard,
while
reducing
consumption. The 1-V maximum dropout voltage
brings increased TERMPWR isolation, making
the device ideal for battery-powered systems. The
TL2217-285, with internal current limiting,
overvoltage protection, ESD protection, and
thermal protection, offers designers enhanced
system protection and reliability.
system
power
When configured as a SCSI active terminator, the TL2217-285 low-dropout regulator eliminates the 220-
and
330-
resistors required for each transmission line with a passive termination scheme, reducing significantly
the continuous system-power drain. When placed in series with 110-
resistors, the device matches the
impedance level of the transmission cable and eliminates reflections.
The TL2217-285 is characterized for operation over the virtual junction temperature range of 0
°
C to 125
°
C.
Copyright
1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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GND
OUTPUT
HEAT
SINK
HEAT
SINK
HEAT SINK – These pins have an internal
resistive connection to ground and should
be grounded or electrically isolated.
OUTPUT
GND
INPUT
GND
KTP PACKAGE
(TOP VIEW)
GND
The GND terminal is in electrical contact with
the mounting base.
GND
INPUT
HEAT
SINK
HEAT
SINK
OUTPUT
GND
INPUT
PW PACKAGE
(TOP VIEW)
KC PACKAGE
(TOP VIEW)
相關PDF資料 |
PDF描述 |
|---|---|
| TL2217-285KC | FIXED-VOLTAGE REGULATORS FOR SCSI ACTIVE TERMINATION |
| TL2217-285PW | FIXED-VOLTAGE REGULATORS FOR SCSI ACTIVE TERMINATION |
| TL2217-285Y | FIXED-VOLTAGE REGULATORS FOR SCSI ACTIVE TERMINATION |
| TL22I7-285PWR | FIXED-VOLTAGE REGULATORS FOR SCSI ACTIVE TERMINATION |
| TL284xD-8 | CURRENT-MODE PWM CONTROLLERS |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TL2217-285KC | 制造商:Texas Instruments 功能描述: |
| TL2217-285KTP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:FIXED-VOLTAGE REGULATORS FOR SCSI ACTIVE TERMINATION |
| TL2217-285PW | 制造商:TI 制造商全稱:Texas Instruments 功能描述:FIXED-VOLTAGE REGULATORS FOR SCSI ACTIVE TERMINATION |
| TL2217-285PWR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TL2217-285Y | 制造商:TI 制造商全稱:Texas Instruments 功能描述:FIXED-VOLTAGE REGULATORS FOR SCSI ACTIVE TERMINATION |
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