Diodes ZRB500 User Manual

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Diodes Incorporated

ZRB500

PRECISION 5V MICROPOWER VOLTAGE REFERENCE

Description

The ZRB500 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 ZRB500 design provides a stable voltage without an
external capacitor and is stable with capacitive loads. The
ZRB500 is recommended for operation between 50µA and
15mA 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

• ± 3%, ± 2% and 1% tolerance

• Operating current 50µA to 15mA

• Typical TC 15ppm/°C

• Transient response, stable in less than 10µs

• Industrial temperature range

• Small outline SOT23 style package

• Green molding compound (No Br, Sb)

Typical Application Circuit

Pin Assignments

SOT23 Package Suffix – F

2

GND

1

V

3

R

(Top View)

Pin 1 floating or connected to pin 2

Applications

• Battery powered and portable equipment

• Metering and measurement systems

• Instrumentation

• Test equipment

• Data acquisition systems

• Precision power supplies

V

R

-

+

GND

ZRB500

Document number: DS32240 Rev. 6 - 2

1 of 5

www.diodes.com

March 2012

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Diodes Incorporated

ZRB500

PRECISION 5V MICROPOWER 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

Note: V
voltage measured over the full operating temperature range

(†)

R

Reverse breakdown voltage

Minimum operating current 30 50
Recommended operating current 0.05 15
Average reverse breakdown voltage

(*)

temperature coefficient

(†)

Slope resistance 0.33 1.5

Reverse dynamic impedance

Wideband noise voltage

=

C

S

R(MAX)

V

=

V

– 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.)

4.95

4.90

4.85

15 50

0.4 1

105

60

50

(µA)

40

E

30

SE

20

EVE

10

5.0

5.0

5.0

5.05

5.10

5.15

T = 85°C

A

T = -40°C

A

1
2
3

ppm/°C

µV(rms)

V

µA

mA

Ω

Ω

0

ZRB500

Document number: DS32240 Rev. 6 - 2

2 of 5

www.diodes.com

2.0 6.00.0

REVERSE VOLTAGE (V)

Reverse Characteristics

4.0

March 2012

© Diodes Incorporated