Table2.Absolutemaximumratings SymbolParameterValueUnit V I -V O Input-referencedifferentialvoltage40V I O OutputcurrentInternallylimitedA T OP Operatingjunctiontemperaturefor: LM217-25to150 °C LM3170to125 LM317B-40to125 P D PowerdissipationInternallylimited ...
The SCR1 (Silicon controlled rectifier) turns off and then does not have a bias current path to ground. The LM317 acts as a current regulator, It is connected to the battery through a one-way diode D1,limiting resistorR1, and a bias resistor R2. The D1 prevents the circuit from batt...
This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317 can be used as a precision current regulator. www.onsemi.com 2 1 D2PAK−3 D2T SUFFIX CASE 936 3 Features • • • • • •...
LM317T中文资料_数据手册_参数 Features •Output voltage range: 1.2 to 37 V •Output current in excess of 1.5 A •0.1% line and load regulation •Floating operation for high voltages •Complete series of protections: current limiting, thermal shutdown and SOA control Description The ...
This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317 can be used as a precision current regulator. Features Output Current in Excess of 1.5 A ...
In order to optimize the load regulation, the current set resistor R1 (see Figure 3) should be tied as close as possible to the regulator, while the ground terminal of R2 should be near the ground of the load to provide remote ground sensing. Performance may be improved with added ...
a resistive divider, making the device exceptionally easy to use and eliminating the stocking of many fixed regulators.Table 1.Device summary Order codes TO-220D²PAK (tape and reel)TO-220FP TO-3 LM117K LM217T LM217D2T -TR LM217K LM317T LM317D2T -TR LM317P LM317K www.st.com ...
If the calculated value for θJA falls below these limits, a heatsink is required. As a design aid, Table 2 shows the value of the θJA of TO-252 for different heatsink area. The copper patterns that we used to measure these θJAs are shown at the end of the Application Notes ...
LM217M, LM317M Medium current 1.2 to 37 V adjustable voltage regulator Datasheet - production data Features ∙ Output voltage range: 1.2 to 37 V ∙ Output current in excess of 500 mA ∙ Line regulation typ. 0.01% ∙ Load regulation typ. 0.1% ∙ Thermal overload pr...
As a design aid, Table 1 shows the value of the θJA of TO-252 for different heatsink area. The copper patterns that we used to measure these θJAs are shown at the end of the Application Notes Section. Figure 9 reflects the same test results as what are in Table 1. Figure 10 ...