LM120, LM320-N
SNVS756C –APRIL 1998–REVISED APRIL 2013
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See Performance (Typical)
*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.
Figure 20. ±15V, 1 Amp Tracking Regulators
Performance (Typical)
Load Regulation at ΔIL = 1A
10 mV
1 mV
Output Ripple, CIN = 3000 μF,
IL = 1A
100 μVrms
100 μVrms
Temperature Stability
+50 mV
+50 mV
Output Noise 10 Hz ≤ f ≤ 10 kHz
150 μVrms
150 μVrms
Light Controllers Using Silicon Photo Cells
*Lamp brightness increases until iI = 5V/R1 (iI can be set as low as 1 μA).
†Necessary only if raw supply filter capacitor is more than 2 inches from LM320MP.
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