LM138K-STEEL National Semiconductor Corporation, LM138K-STEEL Datasheet - Page 4

• Manufacturer Part Number: LM138K-STEEL
• Description: 5-amp Adjustable Regulators
• Manufacturer: National Semiconductor Corporation

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Typical Performance Characteristics
Temperature Stability
Ripple Rejection
Line Transient Response
Application Hints
In operation, the LM138 develops a nominal 1.25V reference
voltage, V
The reference voltage is impressed across program resistor
R1 and, since the voltage is constant, a constant current I
then flows through the output set resistor R2, giving an out-
put voltage of
REF
, between the output and adjustment terminal.
DS009060-41
DS009060-38
DS009060-44
Output Impedance
Ripple Rejection
1
Load Transient Response
(Continued)
4
DS009060-42
DS009060-39
Minimum Operating
Current
Ripple Rejection
DS009060-45
DS009060-40
DS009060-43