ZXRE060

0.6V ADJUSTABLE PRECISION SHUNT REGULATOR

ZXRE060

Document number: DS33611 Rev. 6 - 2

7 of 12

www.diodes.com

March 2011

© Diodes Incorporated

A Product Line of

Diodes Incorporated

Application Information

The following show some typical application examples for the ZXRE060. It is recommended to include the compensation

capacitor C2 to guarantee stability. C2 may range in value from 0.1µF to 10µF depending on the application. The time constant

formed by C2 and R3 should be greater than 1ms multiplied by the feedback factor R2/(R1 + R2).

Both C1 and C2 should be as close to the ZXRE060 as possible and connected to it with the shortest possible track. In the case

of fig 9 and fig10, it means the opto-coupler will have to be carefully positioned to enable this.

Figure 3. 0.6V Shunt Regulator

Figure 4. 1.0V Shunt Regulator

REF

V

OUT

V

=

⎟

⎠

⎞

⎜

⎝

⎛ +

=

2

R

1

R

1

REF

V

OUT

V

3

R

I

OUT

V

IN

V

3

R

−

=

Figure 5. 0.6V series LDO regulator

Figure 6. 1.0V series LDO regulator

REF

V

OUT

V

=

⎟

⎠

⎞

⎜

⎝

⎛ +

=

2

R

1

R

1

REF

V

OUT

V

Design guides

1.

2.

)

1

(min)

FE

h

(

(max)

OUT

I

B

I

+

=

3.

(min)

KA

I

B

I

3

R

I

+

≥

conventional references. There is only an output leakage current which is a maximum of 1µA. Nevertheless, it is

10µA should be adequate for this.

4.

Determine R3 from

3

R

I

)

BE

V

OUT

V

(

IN

V

3

R

+

−

=

.

5.

1uF

1uF