LM120K-15/883 National Semiconductor, LM120K-15/883 Datasheet - Page 10

• Manufacturer Part Number: LM120K-15/883
• Description: Standard Regulator Neg -15V 1.5A 3-Pin (2+Tab) TO-3 Tray
• Manufacturer: National Semiconductor
• Type: Linearr

Specifications of LM120K-15/883

• Package: 3TO-3
• Function: Standard
• Number Of Outputs: 1
• Output Voltage: -15 V
• Maximum Output Current: 1.5 A
• Output Type: Fixed
• Operating Temperature: -55 to 125 °C
• Polarity: Negative

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*Optional. Improves transient response and ripple rejection.
SELECT R2 AS FOLLOWS:
LM120-5
LM120-12
LM120-15
*Lamp brightness increases until i
†Necessary only if raw supply filter capacitor is more than 2 from LM320MP.
*Lamp brightness increases until i
†Necessary only if raw supply filter capacitor is more than 2 from LM320.
Light Controllers Using Silicon Photo Cells
−300Ω
−750Ω
−1k
Variable Output
I
I
= 5V/R1 (i
=i
Q
(1 mA) + 5V/R1.
I
can be set as low as 1 μA).
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*Required if regulator is separated from filter capacitor by more than 3 . For
value given, capacitor must be solid tantalum. 25 μF aluminum electrolytic
may be substituted.
†Required for stability. For value given, capacitor must be solid tantalum. 25
μF aluminum electrolytic may be substituted. Values given may be increased
without limit.
For output capacitance in excess of 100 μF, a high current diode from input
to output (1N4001, etc.) will protect the regulator from momentary input
shorts.
Dual Trimmed Supply
Fixed Regulator
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