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LM376 Dataheets PDF



Part Number LM376
Manufacturers National Semiconductor
Logo National Semiconductor
Description Voltage Regulators
Datasheet LM376 DatasheetLM376 Datasheet (PDF)

LM105 LM205 LM305 LM305A LM376 Voltage Regulators January 1995 LM105 LM205 LM305 LM305A LM376 Voltage Regulators General Description The LM105 series are positive voltage regulators similar to the LM100 except that an extra gain stage has been added for improved regulation A redesign of the biasing circuitry removes any minimum load current requirement and at the same time reduces standby current drain permitting higher voltage operation They are direct plug-in replacements for www.DataSheet4U.

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LM105 LM205 LM305 LM305A LM376 Voltage Regulators January 1995 LM105 LM205 LM305 LM305A LM376 Voltage Regulators General Description The LM105 series are positive voltage regulators similar to the LM100 except that an extra gain stage has been added for improved regulation A redesign of the biasing circuitry removes any minimum load current requirement and at the same time reduces standby current drain permitting higher voltage operation They are direct plug-in replacements for www.DataSheet4U.com the LM100 in both linear and switching regulator circuits with output voltages greater than 4 5V Important characteristics of the circuits are Y Output voltage adjustable from 4 5V to 40V Y Output currents in excess of 10A possible by adding external transistors Y Load regulation better than 0 1% full load with current limiting DC line regulation guaranteed at 0 03% V Ripple rejection on 0 01%V Y 45 mA output current without external pass transistor (LM305A) Like the LM100 they also feature fast response to both load and line transients freedom from oscillations with varying resistive and reactive loads and the ability to start reliably on any load within rating The circuits are built on a single silicon chip and are supplied in a TO-99 metal can The LM105 is specified for operation for b55 C s TA s a 125 C and the LM305 LM305A is specified for 0 C s TA s a 70 C Y Y Schematic and Connection Diagrams Metal Can Package TL H 7755 – 3 Top View Order Number LM105H LM105H 883 SMD 5962-8958801 LM305H or LM305AH See NS Package Number H08C TL H 7755 – 1 C1995 National Semiconductor Corporation TL H 7755 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications (Note 5) LM105 LM305 LM305A Input Voltage 50V 40V 50V Input-Output Differential 40V 40V 40V Power Dissipation (Note 1) 800 mW 800 mW 800 mW b 55 C to a 125 C b 0 C to a 70 C Operating Temperature Range 0 C to a 70 C b 65 C to a 150 C b 65 C to a 150 C b 65 C to a 150 C Storage Temperature Range Lead Temperature (Soldering 10 seconds) 300 C 300 C 300 C Electrical Characteristics (Note 2) Parameter Conditions Min 85 45 30 RSC e 10X TA e 25 C RSC e 10X TA e TA(MAX) RSC e 10X TA e TA(MIN) 0 02 0 03 0 03 LM105 Typ Max 50 40 30 0 05 01 01 Min 85 45 30 0 02 0 03 0 03 LM305 Typ Max 40 30 30 0 05 01 01 Min 85 45 30 LM305A Typ Max 50 40 30 V V V % % % Units www.DataSheet4U.com Input Voltage Range Output Voltage Range Input-Output Voltage Differential Load Regulation (Note 3) 0 s IO s 12 mA RSC e 0X TA e 25 C RSC e 0X TA e 70 C RSC e 0X TA e 0 C 0 s IO s 12 mA 0 02 0 03 0 03 02 04 04 % % % 0 s IO s 45 mA Line Regulation TA e 25 C 0 C s TA s a 70 C VIN b VOUT s 5V TA e 25 C VIN b VOUT t 5V TA e 25 C Temperature Stability TA(MIN) s TA s TA(MAX) 0 025 0 015 03 0 06 0 03 10 0 025 0 015 03 0 06 0 03 10 0 025 0 015 03 0 06 0 03 10 % V % V % V % V % 2 Electrical Characteristics (Note 2) (Continued) Parameter Feedback Sense Voltage Output Noise Voltage 10 Hz s f s 10 kHz CREF e 0 CREF e 0 1 mF Standby Current Drain VIN e 30V TA e 25 C VIN e 40V VIN e 50V Current Limit 08 225 300 01 CREF e 10 mF f e 120 Hz TO-99 Board Mount in Still Air TO-99 Board Mount in 400 LF Min Air Flow TO-99 0 003 230 92 25 20 375 225 300 01 0 003 230 92 25 375 225 08 20 08 300 01 0 003 230 92 25 20 375 0 005 0 002 0 005 0 002 0 005 0 002 % % mA mA mA mV % % V C W C W C W Conditions Min 1 63 LM105 Typ 17 Max 1 81 Min 1 63 LM305 Typ 17 Max 1 81 Min 1 55 LM305A Typ 17 Max 1 85 V Units www.DataSheet4U.com Sense Voltage Long Term Stability Ripple Rejection iJA iJA iJC TA e 25 C RSC e 10X VOUT e 0V (Note 4) Note 1 The maximum junction temperature of the LM105 and LM305A is 150 C and the LM305 is 85 C For operation at elevated temperatures devices in the H08C package must be derated based on a thermal resistance of 168 C W junction to ambient or 25 C W junction to case Peak dissipations to 1W are allowable providing the dissipation rating is not exceeded with the power average over a five second interval for the LM105 and averaged over a two second interval for the LM305 Note 2 Unless otherwise specified these specifications apply for temperatures within the operating temperature range for input and output voltages within the range given and for a divider impedance seen by the feedback terminal of 2 kX Load and line regulation specifications are for a constant junction temperature Temperature drift effects must be taken into account separately when the unit is operating under conditions of high dissipation Note 3 The output currents given as well as the load regulation can be increased by the addition of external transistors The improvement factor will be roughly equal to the composite current gain of the added transistors Note 4 With no external pass transistor Note 5 Refer to RETS105X Drawing for military specifications for the LM105 3 Typical .


KM7101 LM376 AT88SC0204CRF


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