Diodes ZRC500 User Manual

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Diodes Incorporated

ZRC500

PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE

Description

The ZRC500 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 ZRC500 design provides a stable voltage without an
external capacitor and is stable with capacitive loads. The
ZRC500 is recommended for operation between 25µA 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 packages

• No stabilizing capacitor required

• Low knee current, 19µA typical

• Typical T

• Typical slope resistance 0.4Ω

• ±2 and ±1% tolerance

• Industrial temperature range

• Operating current 25µA to 5mA

• Transient response, stable in less than 10µs

• Green molding compound (No Br, Sb)

30ppm/°C

C

Applications

Pin Assignments

SOT23 Package Suffix – F

V

GND

R

3

2

(Top View)

Pin 1 floating or connected to pin 2

Typical Application Circuit

-

+

1

V

R

• Battery powered and portable equipment

• Instrumentation

• Test equipment

• Metering and measurement systems

ZRC500

Document number: DS32173 Rev. 5 - 2

1 of 5

www.diodes.com

GND

March 2012

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ZRC500

PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE

Absolute Maximum Ratings

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:

Note: V

voltage measured over the full operating temperature range

Reverse breakdown voltage
Minimum operating current 19 25

Recommended operating current 0.025 5
Average reverse breakdown voltage

(*)

temperature coefficient

(†)

Slope resistance 0.4 2

Reverse dynamic impedance

Wideband noise voltage

(*)

T

C

– V

R(MAX)

(†)

R

S

= 25°C)

AMB

−

=

VV

()

x

V

1000000x

)MIN(R)MAX(R

TT

)MIN()MAX(R

−

is the maximum deviation in reference

R(MIN)

=

V

Change

to

I

I

−

II

)MIN(R)MAX(R

)MAX(R)MIN(RR

330 mW

= 25°C, unless otherwise specified.)

AMB

IR = 150µA

to

I

R(MIN)

I

R(MAX)

4.95

4.9

30 90

5.0

5.0

5.05

5.1

IR = 1mA
f = 100Hz

0.3 0.8

IAC = 0.1IR
I

= 150µA

R

f = 10Hz to

105

10kHz

60

40

T = 85°C

A

20

REVERSE CURRENT (µA)

T = 25°C

A

T = -40°C

A

1
2

ppm/°C

µV(rms)

V

µA

mA

Ω

Ω

0

ZRC500

Document number: DS32173 Rev. 5 - 2

2 of 5

www.diodes.com

240

REVERSE VOLTAGE (V)

Reverse Characteristics

6

March 2012

© Diodes Incorporated