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TL317_09

更新时间： 2024-11-04 11:56:31
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德州仪器 - TI 稳压器
页数 文件大小 规格书
17页 454K
描述
3-TERMINAL ADJUSTABLE REGULATOR

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TL317_09 数据手册

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SLVS004G − APRIL 1979 − REVISED SEPTEMBER 2009  
D OR PW PACKAGE  
(TOP VIEW)  
D
Output Voltage Range Adjustable From  
1.2 V to 32 V When Used With an External  
Resistor Divider  
INPUT  
NC  
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8
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D
D
Output Current Capability of 100 mA  
OUTPUT  
OUTPUT  
ADJUSTMENT  
OUTPUT  
OUTPUT  
NC  
Input Regulation Typically 0.01% Per  
Input-Voltage Change  
D
Output Regulation Typically 0.5%  
Ripple Rejection Typically 80 dB  
NC − No internal connection  
OUTPUT terminals are all internally connected.  
D
description/ordering information  
PS PACKAGE  
(TOP VIEW)  
The TL317 is an adjustable three-terminal  
positive-voltage regulator capable of supplying  
100 mA over an output-voltage range of 1.2 V to  
32 V. It is exceptionally easy to use and requires  
only two external resistors to set the output  
voltage.  
INPUT  
NC  
OUTPUT  
NC  
ADJUSTMENT  
NC  
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NC  
NC  
In addition to higher performance than fixed  
regulators, this regulator offers full overload  
protection available only in integrated circuits.  
Included on the chip are current-limiting and  
NC − No internal connection  
LP PACKAGE  
(TOP VIEW)  
thermal-overload  
protection.  
All  
overload-protection circuitry remains fully  
functional, even when ADJUSTMENT is  
disconnected. Normally, no capacitors are  
needed unless the device is situated far from the  
input filter capacitors, in which case an input  
bypass is needed. An optional output capacitor  
can be added to improve transient response.  
ADJUSTMENT can be bypassed to achieve very  
high ripple rejection, which is difficult to achieve  
with standard three-terminal regulators.  
INPUT  
OUTPUT  
ADJUSTMENT  
In addition to replacing fixed regulators, the TL317 regulator is useful in a wide variety of other applications.  
Since the regulator is floating and sees only the input-to-output differential voltage, supplies of several hundred  
volts can be regulated as long as the maximum input-to-output differential is not exceeded. Its primary  
application is that of a programmable output regulator, but by connecting a fixed resistor between  
ADJUSTMENT and OUTPUT, this device can be used as a precision current regulator. Supplies with electronic  
shutdown can be achieved by clamping ADJUSTMENT to ground, programming the output to 1.2 V, where most  
loads draw little current.  
The TL317C is characterized for operation over the virtual-junction temperature range of 0°C to 125°C.  
The TL317 is characterized for operation over the virtual-junction temperature range of −20°C to 125°C.  
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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Copyright 2009, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...17

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