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TL317 データシート(PDF) 1 Page - Texas Instruments

部品番号 TL317
部品情報  3-TERMINAL ADJUSTABLE REGULATOR
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

TL317 データシート(HTML) 1 Page - Texas Instruments

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TL317
3TERMINAL ADJUSTABLE REGULATOR
SLVS004G − APRIL 1979 − REVISED SEPTEMBER 2009
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Output Voltage Range Adjustable From
1.2 V to 32 V When Used With an External
Resistor Divider
D Output Current Capability of 100 mA
D Input Regulation Typically 0.01% Per
Input-Voltage Change
D Output Regulation Typically 0.5%
D Ripple Rejection Typically 80 dB
description/ordering information
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.
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
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.
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.
Copyright
 2009, 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.
1
2
3
4
8
7
6
5
INPUT
OUTPUT
OUTPUT
ADJUSTMENT
NC
OUTPUT
OUTPUT
NC
D OR PW PACKAGE
(TOP VIEW)
LP PACKAGE
(TOP VIEW)
NC − No internal connection
OUTPUT terminals are all internally connected.
INPUT
OUTPUT
ADJUSTMENT
1
2
3
4
8
7
6
5
INPUT
NC
NC
NC
OUTPUT
NC
ADJUSTMENT
NC
PS PACKAGE
(TOP VIEW)
NC − No internal connection


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