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ZR4040-2.5
PRECISION 2.5 VOLT MICROPOWER VOLTAGE REFERENCE
Description
The ZR4040-2.5 uses a bandgap circuit design to achieve a
precision micropower voltage reference of 2.5 volts. The
device is available in a small outline s urface mount package,
ideal for applications where space saving is important, as
well as packages for through hole requirements.
The ZR4040-2.5 design provides a stable voltage without an
external capacitor and is stable with capacitive loads. The
ZR4040-2.5 is recommended for operation between 60A
and 15mA and so is ideally suited to lo w 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 package
• No stabilizing capacitor required
• Typical T
• Typical slope resistance 0.4
• 2%, 1% and 0.5% tolerance
• Industrial temperature range
• Operating current 60A to 15mA
• Transient response, stable in less than 10s
• Green molding compound (No Br, Sb)
30ppm/°C
C
Pin Assignments
SOT23 Package Suffix - F
Pin 1 floating or connected to pin 2
E-Line, 3 pin, Rev Package Suffix – R
Pin 3 floating or connected to pin 1
(Top View)
OBSOLETE
(Bottom View)
Applications
• Battery powered and portable equipment
• Metering and measurement systems
• Instrumentation
• Test equipment
• Data acquisition systems
• Precision power supplies
Typical Application Circuit
ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
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Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated)
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
AMB
= 25°C)
330 mW
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ZR4040-2.5
Electrical Characteristics (Test conditions: T
= 25°C, unless otherwise specified.)
amb
Symbol Parameter Condition Min. Typ. Max. Tol. (%) Unit
VR
I
MIN
IR
T
R
ZR
EN
2.4875
Reverse breakdown voltage
IR = 150µA
2.475
2.45
Minimum operating current 25 60
Recommended operating current 0.06 15
(*)
C
(†)
S
Average reverse breakdown voltage
temperature coefficient
Slope resistance 0.4 2
I
R(MIN)
I
R(MAX)
to
30 100
IR = 1mA
Reverse dynamic impedance
Wideband noise voltage
f = 100Hz
I
= 0.1IR
AC
I
= 1mA
R
f = 10Hz to
0.3 0.8
45
2.5
2.5
2.5
2.5125
2.525
2.55
0.5
1
2
V
µA
mA
ppm/°C
µV(rms)
10kHz
Notes:
– V
) x 1000000
R(MIN
– T
R(MIN
to I
MIN
R(MAX
)
)
MAX
is the maximum deviation in reference
IR(MIN
– I
)
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R(MAX)
(V
R(MAX
- V
Change (
V
R
V
R
R(MIN)
I
R(MAX
x (T
(*)
TC =
Note: V
voltage measured over the full operating temperature range.
(†)
RS =
.
ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
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Typical Characteristics
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ZR4040-2.5
ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
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ZR4040-2.5
Ordering Information*
Order
Reference
ZR40401F25TA 1 SOT23 25M Released 7 3000 8
ZR40402F25TA 2 SOT23 25L Released 7 3000 8
ZR404005F25TA 0.5 SOT23 25V Released 7 3000 8
Notes: *All ZR4040R25 variants (E-Line) are obsolete and no longer available for sale. The closest alternative is the SOT23.
Tol
(%)
Package Device Mark Status (*)
Reel Size
(inches)
Quantity
per reel
Tape Width
Package Outline Dimensions
SOT23
E
(mm)
e
b
e1
3leads
L1
E1
D
A
A1
L
c
Dim. Millimeters Inches Dim. Millimeters Inches
Min. Max. Min. Max. Min. Max. Min. Max.
A - 1.12 - 0.044 e1 1.90 NOM 0.075 NOM
A1 0.01 0.10 0.0004 0.004 E 2.10 2.64 0.083 0.104
b 0.30 0.50 0.012 0.020 E1 1.20 1.40 0.047 0.055
c 0.085 0.20 0.003 0.008 L 0.25 0.60 0.0098 0.0236
D 2.80 3.04 0.110 0.120 L1 0.45 0.62 0.018 0.024
e 0.95 NOM 0.037 NOM - - - - -
Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches
ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
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ZR4040-2.5
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 des cribed 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.
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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.
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markings noted herein may also be covered by one or more United States, international or foreign trademarks.
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 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
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Copyright © 2010, Diodes Incorporated
IMPORTANT NOTICE
LIFE SUPPORT
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ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
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