Diodes ZRC250 User Manual

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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 20A 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 package

• No stabilizing capacitor required

• Low knee current, 15A typical

• Typical T

• Typical slope resistance 0.4

• ±3, ±2 and ±1% tolerance

• Industrial temperature range

• Operating current 20A to 5mA

• Transient response, stable in less than 10s

• Green molding compound (No Br, Sb)

30ppm/°C

C

Applications

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Pin Assignments

SOT23 Package Suffix – F

V

GND

Pin 1 floating or connected to pin 2

3

R

2

(Top View)

Typical Application Circuit

ZRC250

1

• Battery powered and portable equipment.

• Instrumentation.

• Test equipment.

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March 2012

© Diodes Incorporated

ZRC250

Document number: DS32182 Rev. 6 - 2

www.diodes.com

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Diodes Incorporated

ZRC250

PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE

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

Electrical Characteristics (Test conditions: T

Symbol Parameter Condition Min. Typ. Max. Tol. (%) Unit

VR

I

MIN

IR

T

C

R

S

ZR

EN

Note:

(*)

T

C

Note: V
voltage measured over the full operating temperature range

(†)

R

S

Reverse breakdown voltage

Minimum operating current 13 20
Recommended operating current 0.02 5
Average reverse breakdown voltage

(*)

temperature coefficient

(†)

Slope resistance 0.4 1

Reverse dynamic impedance

Wideband noise voltage

=

V

– V

R(MAX)

=

V

R(MIN)

Change

= 25°C)

AMB

330 mW

AMB

IR = 150µA

I

to

R(MIN)

I

R(MAX)

IR = 1mA
f = 100Hz
IAC = 0.1IR

= 150µA

I

R

f = 10Hz to
10kHz

−

VV

()

x

I

1000000x

)MIN(R)MAX(R

TT

−

is the maximum deviation in reference

to

I

−

II

)MIN(R)MAX(R

)MIN()MAX(R

)MAX(R)MIN(RR

= 25°C, unless otherwise specified.)

2.475

2.45

2.425

30 90

0.3 0.8

60

40

30

(µA)

20

SE

2.5

2.5

2.5

2.525

2.55

2.575

T = 25°C

A

1
2
3

ppm/°C

µV(rms)

V

µA

mA





10

EVE

0

1.0

REVERSE VOLTAGE (V)

Reverse Characteristics

2.0 3.00.0

ZRC250

Document number: DS32182 Rev. 6 - 2

2 of 5

www.diodes.com

March 2012

© Diodes Incorporated