LM317 High Power Constant Current Source Circuit LM317 Constant Current Source Circuits TheTL431Ais another popular part in a small TO-92 package. In simple terms the TL431A acts a temperature compensated variable/adjustableZener diode. It can also act as a voltage reference or constant current ...
Briefly in a series circuit the current through all series components is the same, while the sum of the voltage drops across each series component will add back to the source voltage. In Fig. 1 we use a LM317 in its constant current mode. The value of R3 divided into 1.25 volts will ...
LM317 电路图
TypicalApplications(Continued)AConstantVoltage/ConstantCurrentRegulator00906315SolidtantalumLightsinconstantcurrentmodeACurrentRegulator0906316.2V–20VRegulatorwithMinimumProgramCurrent0906317Minimumloadcurrent)4mAHighGainAmplifier00906318 L M 1 17/L M 31 17A/L M 31 1 7 7 1 3 M 7A/L 1 3 M 7/L 1 1 LM...
current, adjustable multiple on-card regulators with single control, battery charger circuit, 50 mA constant current battery charger circuit, slow turn-on 15 V regulator circuit, ac voltage regulator circuit, current-limited 6 V charger circuit, adjustable 4 V regulator circuit, high-current ...
OutputCurrentinExcessof1.5Acaseoutlinedrawing)isconnectedtoPin2. OutputAdjustablween1.2Vand37V InternalThermalOverloadProtection InternalShortCircuitCurrentLimitingConstantwithTemperature OutputTransistorSafe−AreaCompensation FloatingOperationforHighVoltageApplicationsTO−220 TSUFFIX 2 Avai...
(0.5A for TO-39) .0.1% LINE AND LOAD REGULATION .FLOATING OPERATION FOR HIGH VOLT- AGES .COMPLETE SERIES OF PROTECTIONS : CURRENT LIMITING, THERMAL SHUTDOWN AND SOA CONTROL TO-3 DESCRIPTION The LM117/LM217/LM317 are monolithic inte- grated circuit in TO-220 and TO-3 packages in- ...
nGuaranteed1.5Aoutputcurrent nAdjustableoutputdownto1.2V nCurrentlimitconstantwithtemperature nP + ProductEnhancementtested n80dBripplerejection nOutputisshort-circuitprotected TypicalApplicationsLM117SeriesPackages PartNumberDesign SuffixPackageLoad Current
LM317中文资料
protects the device during an input short circuit. 1 V < P OV + 1.25 V + V O SS –I < I < 500 mA – I P I Lmin P O As shown O < I < 495 mA O Figure 21. Slow Turn–On Regulator Figure 22. Current Regulator I V out out R R 2 V V 1 LM317M ...