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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.
Features
• Small outline SOT23 packages
• No stabilizing capacitor required
• Low knee current, 19µA typical
• Typical T
• 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)
30ppm/°C
C
Applications
Pin Assignments
SOT23 Package Suffix – F
V
GND
R
3
2
(Top View)
Pin 1 floating or connected to pin 2
Typical Application Circuit
-
+
1
V
R
• Battery powered and portable equipment
• Instrumentation
• Test equipment
• Metering and measurement systems
ZRC500
Document number: DS32173 Rev. 5 - 2
1 of 5
www.diodes.com
GND
March 2012
© Diodes Incorporated
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Diodes Incorporated
ZRC500
PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
Absolute Maximum Ratings
Parameter Rating Unit
Reverse Current 25 mA
Forward Current 25 mA
Operating Temperature -40 to 85 °C
Storage Temperature -55 to 125 °C
Power Dissipation (T
SOT23
Electrical Characteristics (Test conditions: T
Symbol Parameter Condition Min. Typ. Max. Tol. (%) Unit
VR
I
MIN
IR
T
C
R
S
ZR
EN
Note:
Note: V
voltage measured over the full operating temperature range
Reverse breakdown voltage
Minimum operating current 19 25
Recommended operating current 0.025 5
Average reverse breakdown voltage
(*)
temperature coefficient
(†)
Slope resistance 0.4 2
Reverse dynamic impedance
Wideband noise voltage
(*)
T
C
– V
R(MAX)
(†)
R
S
= 25°C)
AMB
−
=
VV
()
x
V
1000000x
)MIN(R)MAX(R
TT
)MIN()MAX(R
−
is the maximum deviation in reference
R(MIN)
=
V
Change
to
I
I
−
II
)MIN(R)MAX(R
)MAX(R)MIN(RR
330 mW
= 25°C, unless otherwise specified.)
AMB
IR = 150µA
to
I
R(MIN)
I
R(MAX)
4.95
4.9
30 90
5.0
5.0
5.05
5.1
IR = 1mA
f = 100Hz
0.3 0.8
IAC = 0.1IR
I
= 150µA
R
f = 10Hz to
105
10kHz
60
40
T = 85°C
A
20
REVERSE CURRENT (µA)
T = 25°C
A
T = -40°C
A
1
2
ppm/°C
µV(rms)
V
µA
mA
Ω
Ω
0
ZRC500
Document number: DS32173 Rev. 5 - 2
2 of 5
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240
REVERSE VOLTAGE (V)
Reverse Characteristics
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March 2012
© Diodes Incorporated
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RWAR
R
EFERENC
E
T
A
E
PE R
N
C
PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
Typical Characteristics
1.6
Product Line o
Diodes Incorporated
ZRC500
5.08
1.4
1.2
1.0
D VOLTAGE (V)
0.8
FO
0.6
0.4
0.1 1 10 100 1000
FORWARD CURRENT (mA)
Forward Characteristics
3.0
Ω
2.0
T = 25°C
A
T = -40°C
A
1.0
SLOP E RESISTANCE ( )
T = 85°C
A
5.06
(V)
5.04
G
5.02
VOL
5.00
4.98
4.96
4.94
20-40 -20 0 40 60 80
100
TEMPERATURE (°C)
Temper ature Drift
1000
I = 150µA
R
I = 1mA
100
Ω
R
E ( )
10
ESISTA
I = 5mA
R
1
SLO
0
0.1 1 10
REFERENCE CURRENT (mA)
Slope Resistance vs. Current
5mA
6
V
5mA
IN
33K
1K
150µA
4
2
0
150µA
10
IN R
V (V) V (V)
0
0
100
200
300
TIME (µs)
Transient R esponse
(Singl e Pulse)
ZRC500
Document number: DS32173 Rev. 5 - 2
3 of 5
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0.1
10 100K
100 1K 10K
FREQUENCY (KHz)
Slope Resistance vs. Frequency
150µA
5mA
5mA
V
IN
33K
1K
150µA
6
4
2
0
10
IN R
V (V) V (V)
0
04
2
TIME (µs)
Tran sient Response
(Repetitive Pulse)
© Diodes Incorporated
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March 2012
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ZRC500
PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
Ordering Information*
Order Reference
ZRC500F02TA 2 50T 7 3000 8
ZRC500F01TA 1 50X 7 3000 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.
Tol
(%)
Device Mark
Package Outline Dimensions
SOT23
A
C
B
K
J
H
K1
F
D
G
L
M
Suggested Pad Layout
SOT23
ZRC500
Document number: DS32173 Rev. 5 - 2
Y
Z
X
E
C
www.diodes.com
4 of 5
Reel Size
(inches)
Quantity
per reel
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
α
Dimensions Value (in mm)
Z 2.9
X 0.8
Y 0.9
C
E
SOT23
0° 8° -
All Dimensions in mm
2.0
1.35
Tape Width
(mm)
March 2012
© Diodes Incorporated
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Diodes Incorporated
ZRC500
PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
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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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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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
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Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems,
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and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systemsrelated 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
IMPORTANT NOTICE
LIFE SUPPORT
www.diodes.com
ZRC500
Document number: DS32173 Rev. 5 - 2
5 of 5
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March 2012
© Diodes Incorporated
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