ZXRE060AFT4-7 DIODES [Diodes Incorporated], ZXRE060AFT4-7 Datasheet - Page 7

• Manufacturer Part Number: ZXRE060AFT4-7
• Description: 0.6V ADJUSTABLE PRECISION SHUNT REGULATOR
• Manufacturer: DIODES [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.
ZXRE060
Document number: DS33611 Rev. 6 - 2
1.
2.
3.
4.
5.
Determine I
Determine I
Determine I
conventional references. There is only an output leakage current which is a maximum of 1µA. Nevertheless, it is
necessary to determine an I
10µA should be adequate for this.
Determine R3 from
Although unlikely to be a problem, ensure that I
Figure 5. 0.6V series LDO regulator
Figure 3. 0.6V Shunt Regulator
OUT
B
R3
from
from
and choose a suitable transistor taking power dissipation into consideration.
V
V
OUT
OUT
B I
R I
R
=
3
3
=
=
h (
=
V
V
≥
I
REF
REF
OUT
FE
B I
V
IN
(min)
+
(max)
I
−
KA
KA(min)
(
V
(min)
+
OUT
R I
) 1
3
. The design of the ZXRE060 effectively means there is no I
to ensure that the device operates within its linear range at all times. I
+
V
1uF
BE
1uF
)
.
0.6V ADJUSTABLE PRECISION SHUNT REGULATOR
Design guides
R
R3
www.diodes.com
3
=
≤ 15 mA.
V
IN
7 of 12
−
R I
V
3
OUT
Figure 6. 1.0V series LDO regulator
Figure 4. 1.0V Shunt Regulator
Diodes Incorporated
A Product Line of
V
V
OUT
OUT
=
=
V
V
REF
REF
⎛
⎜
⎝
⎛
⎜
⎝
1
1
+
+
R
R
R
R
1
2
1
2
⎞
⎟
⎠
⎞
⎟
⎠
KA(min)
limitation as in
KA(min)
© Diodes Incorporated
ZXRE060
≥
March 2011