Panasonic MN101C77C, F77G user manual Power Supply Circuit

Models: F77G MN101C77C

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Chapter 1 Overview

1-6-4 Power Supply Circuit

„Cautions for Setting Power Supply Circuit

The CMOS logic microcontroller is high speed and high density. So, the power circuit should be de- signed, taking into consideration of AC line noise, ripple caused by LED driver. Figure 1-6-6 shows an example for emitter follower type power supply circuit.

„An example for Emitter Follower Type Power Supply Circuit

Set condensors for noise-filter near microcontroller power pins.

VDD

+

Microcontroller

VSS LED port

LED

For Noise-filter

Figure 1-6-6 An Example for Emitter follower type Power Supply Circuit

I - 32 Precautions

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Panasonic MN101C77C, F77G user manual An Example for Emitter follower type Power Supply Circuit