A Product Line of
Diodes Incorporated
ZRC250
PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
Description
The ZRC250 uses a bandgap circuit design to achieve a
precision micropower voltage reference of 2.5 volts. The
device is available in a small outline surface mount package,
ideal for applications where space saving is important, as
well as a package for through hole requirements.
The ZRC250 design provides a stable voltage without an
external capacitor and is stable with capacitive loads. The
ZRC250 is recommended for operation between 20μA 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 package
No stabilizing capacitor required
Low knee current, 15μA typical
Typical T
C
30ppm/°C
Typical slope resistance 0.4Ω
±3, ±2 and ±1% tolerance
Industrial temperature range
Operating current 20μA to 5mA
Transient response, stable in less than 10μs
Green molding compound (No Br, Sb)
Typical Application Circuit
Applications
•
•
•
Battery powered and portable equipment.
Instrumentation.
Test equipment.
ZRC250
Document number: DS32182 Rev. 6 - 2
1 of 5
www.diodes.com
March 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZRC250
PRECISION 2.5 VOLT LOW KNEE CURRENT 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.
2.475
2.45
2.425
0.02
Typ.
2.5
2.5
2.5
13
Max.
2.525
2.55
2.575
20
5
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
40
30
0.4
0.3
90
1
0.8
Z
R
E
N
Note:
Wideband noise voltage
60
µV(rms)
(*) T
C
=
(
V
R(MAX)
−
V
R(MIN)
)
x1000000
V
R
x
(
T
(MAX )
−
T
(MIN)
)
REVERSE CURRENT (µA)
30
Note: V
R(MAX)
– V
R(MIN)
is the maximum deviation in reference
voltage measured over the full operating temperature range
(†)
R
S
=
V
R
Change I
R(MIN)
to I
R(MAX )
I
R(MAX)
−
I
R(MIN)
(
)
20
T
A
= 25°C
10
0
0.0
1.0
2.0
REVERSE VOLTAGE (V)
Reverse Characteristics
3.0
ZRC250
Document number: DS32182 Rev. 6 - 2
2 of 5
www.diodes.com
March 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZRC250
PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
IMPORTANT NOTICE
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).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
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
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall
assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes
Incorporated website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales
channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify
and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of,
directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and
markings noted herein may also be covered by one or more United States, international or foreign trademarks.
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
ZRC250
Document number: DS32182 Rev. 6 - 2
5 of 5
www.diodes.com
March 2012
© Diodes Incorporated
京公网安备 11010802033920号
EEWORLD
