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LM137 数据表(PDF) 1 Page - STMicroelectronics

部件名 LM137
功能描述  Three-terminal adjustable negative voltage regulators
Download  18 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LM137 数据表(HTML) 1 Page - STMicroelectronics

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July 2008
Rev 3
1/18
18
LM137
LM337
Three-terminal adjustable negative voltage regulators
Features
Output voltage adjustable down to VREF
1.5 A guaranteed output current
0.3 %/V typical load regulation
0.01 %/V typical line regulation
Current limit constant with temperature
Ripple rejection: 77 dB
Standard 3-lead transistor packages
Excellent thermal regulation: 0.002 %/V
50 ppm/°C temperature coefficient
Description
The LM137 series are adjustable 3-terminal
negative voltage regulators capable of supplying
in excess -1.5 A over a -1.2 to -37 V output
voltage range. They are exceptionally easy to use
and require only two external resistors to set the
output voltage. Further, both line and load
regulation are better than standard fixed
regulators. Also, LM137 regulators are supplied in
standard transistor packages which are easily
mounted and handled. In addition to higher
performance than fixed regulators, the LM137
series offer full overload protection available only
in integrated circuits.
Included on the chip are current limit, thermal
overload protection and safe area protection. All
overload protection circuitry remains fully
functional even if the adjustment terminal is
disconnected.
TO-220
TO-3
Table 1.
Device summary
Part numbers
Order codes
Temperature range
LM137
LM137K
-55 °C to 150 °C
LM337
LM337K
0 °C to 125 °C
www.st.com


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