LM2990S-5.0/NOPB ,Negative Low Dropout Regulator 3-DDPAK/TO-263 -40 to 125Features 3 DescriptionThe LM2990 is a three-terminal, low-dropout, 1-A1• Input Voltage: –26 V to –6 ..
LM2990SX-12 ,Negative Low Dropout RegulatorElectrical Characteristics= = =V −5V+V (Note 6) , I 1A, C 47 μF, unless otherwise specified. Boldfa ..
LM2990SX-15 ,Negative Low Dropout RegulatorMICROCIRCUIT DATA SHEETOriginal Creation Date: 04/30/96MNLM2990-5.0-X REV 0B1Last Update Date: 03/0 ..
LM2990SX-15 ,Negative Low Dropout RegulatorGeneral DescriptionThe LM2990 is a low dropout, 1 ampere negative voltage regulator available with ..
LM2990SX-5.0 ,Negative Low Dropout RegulatorMICROCIRCUIT DATA SHEETOriginal Creation Date: 04/30/96MNLM2990-5.0-X REV 0B1Last Update Date: 03/0 ..
LM2990T-12 ,Negative Low Dropout RegulatorFeatures- 5% output accuracy over entire operating range - Output current in excess of 1A - Dropout ..
LM92CIM ,±0.33°C Accurate, 12-Bit + Sign Temperature Sensor and Thermal Window Comparator with Two-Wire InterfaceGeneral Descriptionn Up to 4 LM92s can be connected to a single busThe LM92 is a digital temperatur ..
LM92CIMX ,0.33C Accurate / 12-Bit Sign Temperature Sensor and Thermal Window Comparator with Two-Wire InterfaceGeneral Descriptionn Up to 4 LM92s can be connected to a single busThe LM92 is a digital temperatur ..
LM93CIMT ,Hardware Monitor with Integrated Fan Control for Server ManagementGeneral Descriptionn 8 general purpose I/Os:TheLM93,hardwaremonitor,hasatwowiredigitalinterface— 4 ..
LM93CIMTX ,Hardware Monitor with Integrated Fan Control for Server ManagementFeatures n Resolution 8-bits, 1˚Cn Temperature Sensor Accuracy ±3˚C (max)n 8-bit ΣΔ ADCn Temperatur ..
LM94021BIMG ,?1.5?C Temperature Sensor with Multiple Gain Analog Output Options 5-SC70 -50 to 150FEATURES DESCRIPTIONThe LM94021 is a precision analog output CMOS2• LM94021Q is AEC-Q100 Grade 0 Qu ..
LM94022BIMG ,1.5V, SC70, Multi-Gain Analog Temperature Sensor with Class-AB OutputGeneral Descriptionn AutomotiveThe LM94022 is a precision analog output CMOSn Disk Drivesintegrated ..
LM2990S-5.0/NOPB
Negative Low Dropout Regulator
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LM2990SNVS093G–JUNE 1999–REVISED MAY 2015
LM2990 Negative Low-Dropout Regulator Features 3 DescriptionThe LM2990isa three-terminal, low-dropout, 1-A Input Voltage: –26Vto–6V negative voltage regulator available with fixed output• Fixed Output Voltages:−5V, −5.2V, −12V, and voltagesof−5V, −5.2V, −12V, and −15V.−15V
The LM2990 uses circuit design techniques to• 5% Output Accuracy over Entire Operating Range provide low-dropout and low-quiescent current. The• Output Currentin Excessof1A dropout voltageat 1-A load currentis typically 0.6V Dropout Voltage Typically 0.6Vat 1-A Load and an ensured worst-case maximumof1V over the
entire operating temperature range. The quiescent• Low Quiescent Current currentis typically1 mA with 1-A load current andan• Internal Short-Circuit Current Limit input-output voltage differential greater than3V.A• Internal Thermal Shutdown with Hysteresis unique circuit designof the internal bias supply limits
the quiescent currentto only9 mA (typical) when the• Functional Complementto the LM2940 Series regulatorisin the dropout mode (VOUT− VIN≤3 V).
Output voltage accuracyis ensuredto ±5% over load
2 Applications and temperature extremes.• Post Switcher Regulator The LM2990 also implements short-circuit proof, and• Local, On-Card Regulation thermal shutdown includes hysteresisto enhance the• Battery Operated Equipment reliability of the device when overloaded for an
extended periodof time.space
space All these features make the LM2990 an ideal
negative power supply suited for dual supplyspace systems. The device may also be used as fixedor
adjustable current sink load.
Typical ApplicationThe LM2990is availablein two 3-pin packages andis
rated for operation over the junction temperature
rangeof −40°Cto 125°C.
Device Information(1) and**: Requiredfor stability. Mustbeat
leasta 10-μF aluminum electrolyticora1-μF solid tantalumto maintain stability. Maybe increased without boundto maintain
regulation during transients. Locatethe (1) Forall available packages, see the orderable addendumatcapacitoras closeas possibletothe the endofthe datasheet.
regulator. The equivalent series resistance
(ESR)is critical, and shouldbe less thanΩ overthe same operating temperature
rangeasthe regulator.
