LM337 ON Semiconductor, LM337 Datasheet
LM337
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LM337 Summary of contents
Page 1
... The LM337 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator connecting a fixed resistor between the adjustment and output, the LM337 can be used as a precision current regulator ...
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... Endpoint Measurements Thermal Resistance Junction–to–Case, T Package NOTES low to T high = 0 to +125 C, for LM337T, D2T max = 1 max = Load and line regulation are specified at constant junction temperature. Change because of heating effects is covered under the Thermal Regulation specification ...
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... Representative Schematic Diagram 810 10k 5.0k 800 15pF 6.0k 2.2k 3.0k 100pF 100k 2.4k 500 15 This device contains 39 active transistors Adj 120 Adjust out LM337 – Line Regulation (% Adjust 60 2.0k 21k V out 800 25pF 15pF 220 2.0k 100 18k 30k 2 ...
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... 1N4002 120 out LM337 * D 1 Discharges C Adj if output is shorted to Ground. are registered trademarks of Motorola, Inc. Motorola, Inc Equal * Pulse testing required. 1% Duty Cycle is suggested. –V O (min Load) –V O (max Load (min Load) – (max Load) ...
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... JUNCTION TEMPERATURE ( C) Figure 9. Temperature Stability 1.27 1.26 1.25 1.24 1.23 –50 – JUNCTION TEMPERATURE ( C) MOTOROLA ANALOG IC DEVICE DATA LM337 4 0.5 A 3.0 2 1 100 125 150 V in –V out , INPUT–OUTPUT VOLTAGE DIFFERENTIAL (Vdc) 3.0 2.5 2.0 1.5 1.0 100 125 150 –50 – ...
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... C Adj = 10 F –0.2 –0.4 V out = – –0 1.0 F –1 TIME ( s) 6 LM337 Figure 12. Ripple Rejection versus Output Current 100 – out = – 120 –30 –35 –40 0.01 Figure 14 ...
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... This imposes the requirement for a minimum load current. If the load current is less than this minimum, the output voltage will rise. Since the LM337 is a floating regulator only the voltage differential across the circuit which is important to performance, and operation at high voltages with respect to ground is possible ...
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... REF 1.270 REF L 0.000 0.010 0.000 0.254 M 0.088 0.102 2.235 2.591 N 0.018 0.026 0.457 0.660 P 0.058 0.078 1.473 1.981 REF 5 REF S 0.116 REF 2.946 REF U 0.200 MIN 5.080 MIN V 0.250 MIN 6.350 MIN *LM337/D* MOTOROLA ANALOG IC DEVICE DATA LM337/D ...