A Product Line of
Diodes Incorporated
ZR4040-2.5
PRECISION 2.5 VOLT MICROPOWER VOLTAGE REFERENCE
Description Pin Assignments
The ZR4040-2.5 uses a bandgap circuit design to achieve a
SOT23 Package Suffix - F
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 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 60 A
and 15mA and so is ideally suited to low power and battery
(Top View)
powered applications.
Pin 1 floating or connected to pin 2
Excellent performance is maintained to an absolute
maximum of 25mA, however the rugged design and 20 volt
E-Line, 3 pin, Rev Package Suffix R
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
OBSOLETE
Small outline SOT23 package
No stabilizing capacitor required
Typical T 30ppm/C
C
(Bottom View)
Typical slope resistance 0.4
Pin 3 floating or connected to pin 1
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)
Typical Application Circuit
Applications
Battery powered and portable equipment
Metering and measurement systems
Instrumentation
Test equipment
Data acquisition systems
Precision power supplies
1 of 5 June 2010
ZR4040-2.5
Diodes Incorporated
www.diodes.com
Document number: DS32180 Rev. 5 - 2
A Product Line of
Diodes Incorporated
ZR4040-2.5
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 = 25C)
AMB
330 mW
SOT23
Electrical Characteristics (Test conditions: T = 25C, unless otherwise specified.)
amb
Symbol Parameter Condition Min. Typ. Max. Tol. (%) Unit
2.4875 2.5 2.5125 0.5
V Reverse breakdown voltage I = 150A 2.475 2.5 2.525 1 V
R R
2.45 2.5 2.55 2
Minimum operating current 25 60 A
I
MIN
Recommended operating current 0.06 15 mA
I
R
Average reverse breakdown voltage
(*)
30 100 ppm/C
T I to
C R(MIN)
temperature coefficient
()
I
R(MAX)
R Slope resistance 0.4 2
S
I = 1mA
R
Reverse dynamic impedance f = 100Hz 0.3 0.8
Z
R
I = 0.1I
AC R
I = 1mA
R
Wideband noise voltage 45 V(rms)
E f = 10Hz to
N
10kHz
Notes:
(*) (V V ) x 1000000
R(MAX) R(MIN)
T =
C
V x (T T )
R (MAX) (MIN)
Note: V - V is the maximum deviation in reference
R(MAX) R(MIN)
voltage measured over the full operating temperature range.
V Change ( to I )
() R IR(MIN) R(MAX)
R =
S
I I )
R(MAX) R(MIN)
.
2 of 5 June 2010
ZR4040-2.5
Diodes Incorporated
www.diodes.com
Document number: DS32180 Rev. 5 - 2