LM320 National Semiconductor Corporation, LM320 Datasheet - Page 14

• Manufacturer Part Number: LM320
• Description: Series 3-terminal Negative Regulators
• Manufacturer: National Semiconductor Corporation

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Light Controllers Using Silicon Photo Cells
*Lamp brightness increases until i
†Necessary only if raw supply filter capacitor is more than 2 inches from
LM320MP.
±15V, 1 Amp Tracking Regulators
I
= 5V/R1 (i
I
can be set as low as 1 μA).
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*Lamp brightness increases until i
†Necessary only if raw supply filter capacitor is more than 2 inches from LM320.
*Resistor tolerance of R4 and R5 determine matching of (+) and (−) outputs.
**Necessary only if raw supply filter capacitors are more than 2 inches from
regulators.
Load Regulation at ΔI
Output Ripple, C
I
Temperature Stability
Output Noise 10 Hz
L
= 1A
IN
Performance (Typical)
= 3000 μF,
≤
f
L
≤
I
= 1A
=i
10 kHz 150 μVrms
Q
(1 mA) + 5V/R1.
100 μVrms
+50 mV
10 mV
100 μVrms
150 μVrms
+50 mV
1 mV
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