ZXRE160AET5TA Diodes Inc. / Zetex, ZXRE160AET5TA Datasheet - Page 8

• Manufacturer Part Number: ZXRE160AET5TA
• Description: Voltage & Current References 0.5V ENH ADJ Prec Shunt REG 5-Term
• Manufacturer: Diodes Inc. / Zetex

Specifications of ZXRE160AET5TA

• Rohs: yes
• Product: Voltage References
• Topology: Shunt References
• Output Voltage: 0.2 V to 18 V
• Maximum Operating Temperature: + 125 C
• Package / Case: SOT-25
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Reference Type: Adjustable
• Series Vref - Input Voltage (max): 18 V
• Series Vref - Input Voltage (min): 2 V

Application Information
The following show some typical application examples for the ZXRE160.
In shunt regulator mode it is necessary to include the compensation capacitor C2 to guarantee stability. C2 may range in value from 0.1µF to
10µF depending on the application. The minimum value of C2 can be determined from the following equation (resistor values are in kΩ):
Both C1 and C2 should be as close to the ZXRE160 as possible and connected to it with the shortest possible track. In the case of Figure 10 and
Figure 11, it means the opto-coupler will have to be carefully positioned to enable this.
ZXRE160
Document number: DS35688 Rev. 2 - 2
Figure 4. 0.6V Shunt Regulator
Figure 3. 15V Supply Monitor
R
3
V
OUT
=
V
IN
=
−
I
R
V
V
3
REF
OUT
C2
www.diodes.com
MIN
≥
8 of 15
R
3
Figure 3 shows a typical configuration for the ZXRE160 in comparator
mode.
Here the comparator switches low when:
Alternative values of R1, R2 may be used to provide different threshold
voltages. R3 can also be adjusted to set the bias current for different
values of V
due to the bias current of the FB pin.
This circuit has no hysteresis, so a small capacitor of approx.4.7nF
between FB and GND is recommended to provide cleaner transitions at
the output.
(
R
R
1
2
+
R
2
)
μF
M
. R2 should be kept as low as possible to minimize errors
Figure 5. 1.0V Shunt Regulator
V
M
Diodes Incorporated
V
≥
OUT
R
3
A Product Line of
V
=
FB
=
V
V
(
IN
R
REF
R
1
2
−
I
R
+
⎛
⎜
⎝
V
3
1
R
OUT
+
2
R
R
)
2
1
⎞
⎟
⎠
ZXRE160
© Diodes Incorporated
June 2012