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LM317LCLPR 데이터시트(PDF) 1 Page - Texas Instruments

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부품명 LM317LCLPR
상세설명  3-TERMINAL ADJUSTABLE REGULATOR
Download  17 Pages
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

LM317LCLPR 데이터시트(HTML) 1 Page - Texas Instruments

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INPUT
OUTPUT
ADJUSTMENT
LP PACKAGE
(TOP VIEW)
INPUT
OUTPUT
ADJUSTMENT
PK PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
INPUT
OUTPUT
OUTPUT
ADJUSTMENT
NC
OUTPUT
OUTPUT
NC
D PACKAGE
(TOP VIEW)
NC – No internal connection
OUTPUT terminals are all internally connected.
1
2
3
4
8
7
6
5
INPUT
NC
NC
ADJUSTMENT
NC
NC
OUTPUT
NC
PW PACKAGE
(TOP VIEW)
NC – No internal connection
LM317L
www.ti.com
SLCS144D
– JULY 2004 – REVISED OCTOBER 2011
3-TERMINAL ADJUSTABLE REGULATOR
Check for Samples: LM317L
1
FEATURES
Output Voltage Range Adjustable 1.2 V to 32 V
Output Regulation Typically 0.5%
When Used With External Resistor Divider
Ripple Rejection Typically 80 dB
Output Current Capability of 100 mA
For Higher Output Current Requirements,
Input Regulation Typically 0.01% Per
See LM317M (500 mA) and LM317 (1.5 A)
Input-Voltage Change
DESCRIPTION/ORDERING INFORMATION
The LM317L 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 LM317L 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 LM317LC is characterized for operation over the virtual junction temperature range of 0
°C to 125°C. The
LM317LI is characterized for operation over the virtual junction temperature range of
–40°C to 125°C.
1
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.
PRODUCTION DATA information is current as of publication date.
Copyright
© 2004–2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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