263

Regulator ICs

BA6161N / BA6161F

FCircuit operation

A zener diode on the feedback pin provides reference

voltage and compensates for temperature changes.

Feedback current is fed from the zener diode to the oscil-

lator.

Blocking oscillation is provided by connecting the exter-

The potential at the oscillator drive pin can be raised by

using this oscillation. The output voltage is constant be-

cause the feedback current is always supplied to the os-

cillation circuit.

FApplication example

FOperation notes

(1)

When an output voltage greater than the reference

output voltage (33.3V) is required, use a variable resistor

(Murata RVG6P02-104M or equivalent product) with

good temperature characteristics as shown in the ap-

plication circuit. Make sure, however, that the voltage of

the oscillator drive pin does not exceed 42V.

(2)

The coil to be connected between pins 2 and 3

should have the lowest possible DC resistance (under

10

Ω) and an inductance of 4.7mH (Sumida Electronics

RC095-472K or equivalent product).