Sample Application Circuit

1. Mounting in the CRT neck

Note: * This RC matching circuit is provided to match the IC internal impedance with the output load impedance. When the IC is mounted in the CRT neck,

2. Cable transmission (separate boards)

Mounting location for the C, G matching circuit

Add the RC matching circuit at a position as close as possible to the VP603 output pin.

Thermal Design for the VP603

Since the VP603 is a three-channel device, we first consider a single channel. The chip temperature of each transistor

during actual operation is determined using the following formula.

Tj = (Tri) =

θj-c (Tri) × Pc (Tri) + ∆Tc + Ta [°C] .................................. (1)

θj-c (Tri): Thermal resistance of an individual transistor

Pc (Tri):

Collector loss for an individual transistor

∆Tc:

Case temperature rise

Ta:

Ambient temperature

No. 5542-4/8

VP603