ZRC250F01TA Datasheet ZRC250F02TA, ZRC250F03TA, ZRC250F01TA | P1-P3

ZRC250

PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE

ZRC250

Document number: DS32182 Rev. 6 - 2

1 of 5

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March 2012

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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

C

30ppm/°C

• 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)

Applications

• Battery powered and portable equipment.

• Instrumentation.

• Test equipment.

Pin Assignments

SOT23 Package Suffix – F

1

3

2

V

R

GND

(Top View)

Pin 1 floating or connected to pin 2

Typical Application Circuit

ZRC250

PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE

ZRC250

Document number: DS32182 Rev. 6 - 2

2 of 5

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March 2012

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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

AMB

= 25°C)

SOT23

330 mW

Electrical Characteristics (Test conditions: T

AMB

= 25°C, unless otherwise specified.)

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

V

R

Reverse breakdown voltage

I

R

= 150µA

2.475

2.45

2.425

2.5

2.525

2.55

2.575

1

2

3

V

I

MIN

Minimum operating current 13 20

µA

I

R

Recommended operating current 0.02 5

mA

T

C

(*)

Average reverse breakdown voltage

temperature coefficient

I

R(MIN)

to

I

R(MAX)

30 90

ppm/°C

R

S

(†)

Slope resistance 0.4 1



Z

R

Reverse dynamic impedance

I

R

= 1mA

f = 100Hz

I

AC

= 0.1I

R

0.3 0.8



E

N

Wideband noise voltage

I

R

= 150µA

f = 10Hz to

10kHz

60

µV(rms)

Note:

(*)

(

)

()

TT

x

V

1000000x

VV

T

)MIN()MAX(R

)MIN(R)MAX(R

C

−

=

Note: V

R(MAX)

– V

R(MIN)

is the maximum deviation in reference

voltage measured over the full operating temperature range

(†)

(

)

II

I

to

I

Change

V

R

)MIN(R)MAX(R

)MAX(R)MIN(RR

S

−

=

2.0 3.00.0

REVERSE VOLTAGE (V)

Reverse Characteristics

1.0

R

EVE

R

SE

C

U

R

EN

T

(µA)

40

30

20

10

0

T = 25°C

A

ZRC250

PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE

ZRC250

Document number: DS32182 Rev. 6 - 2

3 of 5

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Typical Characteristics

0.001 0.1 10 100

FORWARD CURRENT (mA)

Forward Characteristics

10.01

0.4

FO

R

WA

R

D VOL

T

AG

E

(V)

0.6

0.8

1.0

1.2

1.4

0.2

0.0

20-40 -20 0 40 60 80

TEMPERATURE (°C)

Temperature Drift

2.51

R

E

F

E

R

E

N

C

E

VOL

T

A

G

E

(V)

2.50

2.49

2.48

2.47

1.4

S

L

O

P

E

R

E

S

I

S

T

A

N

C

E

()

Ω

0.1 1 100

REFERENCE CURRENT (mA)

Slope Resistance vs. Current

10

T = -40°C

A

T = 25°C

A

T = 85°C

A

1.2

1.0

0.8

0.6

0.4

0.2

0.0

I = 150µA

R

I = 5mA

R

10 1K 10K

FREQUENCY (KHz)

Slope Resistance vs. Frequency

10 100K

0.1

100

1000

S

L

O

P

E

R

E

S

I

S

T

A

N

C

E

()

Ω

10

1

I = 1mA

R

I = 5mA

R

I = 150µA

R

1

0

2

0

10

V (V) V (V)

IN R

0 4 12 16

TIME (µs)

Transient Response

(SIngle Pulse)

8

0 4 12 16

TIME (µs)

Transient Response

(Repetitive Pulse)

8

1

0

2

0

10

V (V) V (V)

IN R

I = 5mA

R

I = 150µA

R

ZRC250F01TA

ZRC250F01TA

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