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Details, datasheet, quote on part number:LM204
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| Part: | LM204 |
| Category: | Power Management => Regulators => Voltage Regulators => Adjustable |
| Description: | Negative Regulator (discontinued) |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM204 datasheet File size : 165 kB |
| Request For quote: | Find where to buy LM204
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Datasheet text preview:
LM104 LM204 LM304 Negative Regulator
March 1989
LM104 LM204 LM304 Negative Regulator
General Description
The LM104 series are precision voltage regulators which can be programmed by a single external resistor to supply any voltage from 40V down to zero while operating from a single unregulated supply They can also provide 0 01-percent regulation in circuits using a separate floating bias supply where the output voltage is limited only by the breakdown of external pass transistors Although designed primarily as linear series regulators the circuits can be used as switching regulators current regulators or in a number of other control applications Typical performance characterisY tics are S Subsurface zener reference Y 1 mV regulation no load to full load Y 0 01% V line regulation Y 0 2 mV V ripple rejection Y 0 3% temperature stability over military temperature range The LM104 series is the complement of the LM105 positive regulator intended for systems requiring regulated negative voltages which have a common ground with the unregulated supply By themselves they can deliver output currents to 25 mA but external transistors can be added to get any desired current The output voltage is set by external resistors and either constant or foldback current limiting is made T available he LM104 is specified for operation over the b55 C to C military temperature range The LM204 is specified fo T r operation over the b25 C to a 85 C temperature range he LM304 is specified for operation from 0 C to a 70 C
a 125
chematic Diagram
TL H 7754 1
C1995 National Semiconductor Corporation
TL H 7754
RRD-B30M115 Printed in U S A
Absolute Maximum Ratings
D If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office ( istributors for availability and specifications Note 6) Input Voltage Input-Output Voltage Differential Power Dissipation (Note 1) Operating Temperature Range LM104 LM204 LM304 Storage Temperature Range Lead Temperature (Soldering 10 sec ) LM104 LM204 50V 50V 500 mW
b 55 C to a 125 C b 25 C to a 85 C b 65
LM304 40V 40V 500 mW
C to a 150 C 260 C for plastic
0 C to a 70 C C to a 150 C 300 C for hermetic
b 65
Electrical Characteristics
Parameter Input Voltage Range Output Voltage Range Output-Input Voltage Differential (Note 3) Load Regulation (Note 4) Line Regulation (Note 5) Ripple Rejection IO e 20 mA IO e 5 mA O s IO s 20 mA RSC e 15X VOUT s b5V DVIN e 0 1 VIN C19 e 10 mF f e 120 Hz VIN k b15V b 7V t VIN t b 15V R2-3 e 2 4k VO s b1V 10 Hz s f s 10 kHz VO s b5V C1-9 e 0 C1-9 e 10 mF IL e 5 mA VO e 0 VO e b30V VO e b40V VO s b1V 18 Conditions Min
b 50 b 40
LM104 LM204 Typ Max
b8 b 0 015
LM304 Min
b 40 b 30
Units Max
b8 b 0 035
Typ
V V V V mV % mV V mV V V kX % % mV
20 05 1 0 056 02 05 20 03 0 007 15 17 36 0 01
50 50 5 01 05 10 22 10
20 05 1 0 056 02 05 18 20 03 0 007 15
40 40 5 01 05 10 22 10
Output Voltage Scale Factor Temperature Stability Output Noise Voltage
Standby Current Drain
25 50 10
17 36 0 01
25 50 10
mA mA mA %
Long Term Stability
Note 1 The maximum junction temperature of the LM104 is 150 C while that of the LM204 is 125 C and LM304 is 100 C For operating at elevated temperatures d Nevices in the H10C package must be derated based on a thermal resistance of 150 C W junction to ambient or 45 C W junction to case ote 2 These specifications apply for junction temperatures between b 55 C and 150 C (between b 25 C and 100 C for the LM204 and 0 C to a 85 C for the LM304) and for input and output voltages within the ranges given unless otherwise specified The load and line regulation specifications are for constant junction N temperature Temperature drift effects must be taken into account separately when the unit is operating under conditions of high dissipation Note 3 When external booster transistors are used the minimum output-input voltage differential is increased in the worst case by approximately 1V ote 4 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 N equal to the composite current gain of the added transistors d ote 5 With zero output the dc line regulation is determined from the ripple rejection Hence with output voltages between 0V and b 5V a dc output variation Netermined from the ripple rejection must be added to find the worst-case line regulation ote 6 Refer to RETS104X drawing for military specifications for the LM104 2
Typical Performance Characteristics
Load Regulation Load Regulation Current Limiting
Supply Voltage Rejection
Supply Voltage Rejection With Preregulated Reference Supply
Ripple Rejection
Current Limit Sense Voltage
Regulator Dropout Voltage
Minimum Input Voltage
Line Transient Response
Load Transient Response
Standby Current Drain
TL H 7754 7
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