A Product Line of
Diodes Incorporated
ZRB500
PRECISION 5V MICROPOWER VOLTAGE REFERENCE
Description
The ZRB500 uses a bandgap circuit design to achieve a
precision micropower voltage reference of 5.0 volts. The
device is available in small outline surface mount packages,
ideal for applications where space saving is important, as
well as packages for through hole requirements.
The ZRB500 design provides a stable voltage without an
external capacitor and is stable with capacitive loads. The
ZRB500 is recommended for operation between 50µA and
15mA and so is ideally suited to low power and battery
powered applications.
Excellent performance is maintained to an absolute
maximum of 25mA, however the rugged design and 20 volt
processing allows the reference to withstand transient effects
and currents up to 200mA. Superior switching capability
allows the device to reach stable operating conditions in only
a few microseconds.
Pin Assignments
SOT23 Package Suffix – F
2 GND
1
3 V
R
(Top View)
Pin 1 floating or connected to pin 2
Features
•
•
•
•
•
•
•
± 3%, ± 2% and 1% tolerance
Operating current 50µA to 15mA
Typical TC 15ppm/°C
Transient response, stable in less than 10µs
Industrial temperature range
Small outline SOT23 style package
Green molding compound (No Br, Sb)
Applications
•
•
•
•
•
•
Battery powered and portable equipment
Metering and measurement systems
Instrumentation
Test equipment
Data acquisition systems
Precision power supplies
Typical Application Circuit
V
R
-
+
GND
ZRB500
Document number: DS32240 Rev. 6 - 2
1 of 5
www.diodes.com
March 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZRB500
PRECISION 5V MICROPOWER VOLTAGE REFERENCE
Absolute Maximum Ratings
(Voltages to GND Unless Otherwise Stated)
Parameter
Reverse Current
Forward Current
Operating Temperature
Storage Temperature
Power Dissipation (T
AMB
= 25°C)
SOT23
Rating
25
25
-40 to 85
-55 to 125
330
Unit
mA
mA
°C
°C
mW
Electrical Characteristics
(Test conditions: T
AMB
= 25°C, unless otherwise specified.)
Symbol
V
R
I
MIN
I
R
T
C
R
S
(*)
Parameter
Reverse breakdown voltage
Minimum operating current
Recommended operating current
Average reverse breakdown voltage
temperature coefficient
Slope resistance
Reverse dynamic impedance
Condition
I
R
= 150µA
Min.
4.95
4.90
4.85
0.05
Typ.
5.0
5.0
5.0
30
Max.
5.05
5.10
5.15
50
15
Tol. (%)
1
2
3
Unit
V
µA
mA
ppm/°C
Ω
Ω
(†)
I
R(MIN)
to
I
R(MAX)
I
R
= 1mA
f = 100Hz
I
AC
= 0.1I
R
I
R
= 150µA
f = 10Hz to
10kHz
60
50
REVERSE CURRENT (µA)
15
0.33
0.4
50
1.5
1
Z
R
E
N
Note:
Wideband noise voltage
105
µV(rms)
(*) T
C
=
(
V
R(MAX)
−
V
R(MIN)
)
x1000000
V
R
x
(
T
(MAX )
−
T
(MIN)
)
Note: V
R(MAX)
– V
R(MIN)
is the maximum deviation in reference
voltage measured over the full operating temperature range
40
(†)
R
S
=
V
R
Change I
R(MIN)
to I
R(MAX )
I
R(MAX)
−
I
R(MIN)
(
)
30
T
A
= 85°C
20
T
A
= -40°C
10
0
0.0
2.0
4.0
REVERSE VOLTAGE (V)
Reverse Characteristics
6.0
ZRB500
Document number: DS32240 Rev. 6 - 2
2 of 5
www.diodes.com
March 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZRB500
PRECISION 5V MICROPOWER VOLTAGE REFERENCE
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LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the
express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause
the failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or
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products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or
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Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life
support devices or systems.
Copyright © 2012, Diodes Incorporated
www.diodes.com
ZRB500
Document number: DS32240 Rev. 6 - 2
5 of 5
www.diodes.com
March 2012
© Diodes Incorporated
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