A Product Line of
Diodes Incorporated
ZRC500
PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
Description
The ZRC500 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 ZRC500 design provides a stable voltage without an
external capacitor and is stable with capacitive loads. The
ZRC500 is recommended for operation between 25µA and
5mA 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
V
R
3
1
GND 2
(Top View)
Pin 1 floating or connected to pin 2
Features
•
•
•
•
•
•
•
•
•
•
Small outline SOT23 packages
No stabilizing capacitor required
Low knee current, 19µA typical
Typical T
C
30ppm/°C
Typical slope resistance 0.4Ω
±2 and ±1% tolerance
Industrial temperature range
Operating current 25µA to 5mA
Transient response, stable in less than 10µs
Green molding compound (No Br, Sb)
Typical Application Circuit
V
R
-
+
Applications
•
•
•
•
Battery powered and portable equipment
Instrumentation
Test equipment
Metering and measurement systems
GND
ZRC500
Document number: DS32173 Rev. 5 - 2
1 of 5
www.diodes.com
March 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZRC500
PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
Absolute Maximum Ratings
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
4.9
0.025
Typ.
5.0
5.0
19
Max.
5.05
5.1
25
5
Tol. (%)
1
2
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
30
0.4
0.3
90
2
0.8
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)
)
REVERSE CURRENT (µA)
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)
(
)
T
A
= 85°C
20
T
A
= 25°C
T
A
= -40°C
0
0
2
4
REVERSE VOLTAGE (V)
Reverse Characteristics
6
ZRC500
Document number: DS32173 Rev. 5 - 2
2 of 5
www.diodes.com
March 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZRC500
PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
Typical Characteristics
1.6
1.4
FORWARD VOLTAGE (V)
5.08
5.06
REFERENCE VOLTAGE (V)
5.04
5.02
5.00
4.98
4.96
4.94
-40
1.2
1.0
0.8
0.6
0.4
0.1
1
10
100
1000
FORWARD CURRENT (mA)
Forward Characteristics
3.0
-20
0
20
40
60
80
100
TEMPERATURE (°C)
Temperature Drift
1000
I
R
= 150µA
I
R
= 1mA
SLOPE RESISTANCE (
Ω
)
SLOPE RESISTANCE (
Ω
)
100
2.0
T
A
= -40°C
T
A
= 25°C
10
I
R
= 5mA
1.0
1
T
A
= 85°C
0
0.1
1
REFERENCE CURRENT (mA)
Slope Resistance vs. Current
5mA
10
0.1
10
100
1K
10K
FREQUENCY (KHz)
Slope Resistance vs. Frequency
100K
V
R
(V)
4
2
0
10
150µA
V
IN
1K
5mA
33K
150µA
V
R
(V)
6
6
4
5mA
V
IN
150µA
1K
5mA
33K
150µA
2
0
10
V
IN
(V)
V
IN
(V)
0
100
0
0
200
TIME (µs)
Transient Response
(Single Pulse)
300
0
4
TIME (µs)
Transient Response
(Repetitive Pulse)
2
6
ZRC500
Document number: DS32173 Rev. 5 - 2
3 of 5
www.diodes.com
March 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZRC500
PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
Ordering Information*
Order Reference
ZRC500F02TA
ZRC500F01TA
Tol
(%)
2
1
Device Mark
50T
50X
Reel Size
(inches)
7
7
Quantity
per reel
3000
3000
Tape Width
(mm)
8
8
Notes: *All ZRC500A variants (E-Line 3-pin), ZRC500Y variants (E-Line 2-pin), ZRC500R variants (E-Line 3-pin reversed) and ZRC500N8 variants (SO-8)
are obsolete.
Package Outline Dimensions
SOT23
A
B C
H
K
D
J
F
G
L
M
K1
SOT23
Dim
Min
Max
Typ
A
0.37
0.51
0.40
B
1.20
1.40
1.30
C
2.30
2.50
2.40
D
0.89
1.03 0.915
F
0.45
0.60 0.535
G
1.78
2.05
1.83
H
2.80
3.00
2.90
J
0.013 0.10
0.05
K
0.903 1.10
1.00
K1
-
-
0.400
L
0.45
0.61
0.55
M
0.085 0.18
0.11
0°
8°
-
α
All Dimensions in mm
Suggested Pad Layout
SOT23
Y
Z
C
Dimensions Value (in mm)
Z
2.9
X
0.8
Y
0.9
2.0
C
1.35
E
X
E
ZRC500
Document number: DS32173 Rev. 5 - 2
4 of 5
www.diodes.com
March 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZRC500
PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
IMPORTANT NOTICE
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
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without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
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assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes
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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 systems,
and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products
and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-
related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes 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
ZRC500
Document number: DS32173 Rev. 5 - 2
5 of 5
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March 2012
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