SGS Thomson Microelectronics TS821IZ, TS821ILT, TS821ID, TS821BIZ, TS821BILT Datasheet

1/7

1.225V MICROPOWER VOLTAGE REFERENCE

.

1.225V TYP OUTPUT VOLTAGE

.

ULTRA LOW OPERATING CURRENT : 40µA
typ.

.

HIGH PRECISION @ 25oC
+/-2% (Standard version)
+/-1% (A grade)
+/-0.5% (B grade)

.

HIGH STABILITYWHEN USED WITH
CAPACITIVE LOADS

.

WIDE TEMPERATURERANGE : -40 to +85oC

.

T092 & SOT23-3 PACKAGES



DESCRIPTION

TheTS821 isamicropowerintegrated circuitwhich
is a high stability, two terminals, band gap refer­ence providing a stableoutput voltage over the in­dustrial temperature range (-40 to +85oC). The
minimum operating current is guaranteed at 50µA
over the full operating temperature range.

APPLICATIONS

.

Computers

.

Instrumentation

.

Battery chargers

.

Switch Mode Power Supply

.

Battery operated equipements

TS821

Z

TO92

(Plastic Package)

L

SOT-23L

(Plastic Micropackage)

ORDER CODES

Precision TO92 SOT23-3

SOT23

Marking

2% TS821IZ TS821ILT L213
1% TS821AIZ TS821AILT L212

0.5% TS821BIZ TS821BILT L211

Single temperature range: -40 to +85

o

C

PIN CONNECTIONS (top view)

May 2000

NC Anod e

123

Cathode

TO92

1

2

3

*

Anode

Cathode

SOT23-3

* This pin must be leftfloating

or conn e cte d to pin 2

2/7

TS821

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

I

k

Reverse Breakdown Current 20 mA

I

f

Forward Current 10 mA

P

d

Power Dissipation SOT23-3

TO92

360
625

mW

T

oper

Operating Free Air Temperature Range -40 to+85

o

C

T

stg

Storage Temperature -65 to +150

o

C

OPERATINGCONDITIONS

Symbol Parameter Value Unit

I

rmin

Minimum OperatingCurrent 45

µA

I

rmax

Maximum Operating Current 12 mA

ELECTRICAL CHARACTERISTICS

TS821 (2% Precision)

T

amb

=25oC (unless otherwise specified)

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

k

Reverse Breakdown Voltage

I

k

= 100µA@T

amb

=25oC

1.200 1.225 1.250 V

Reverse Breakdown Voltage
Tolerance

I

k

= 100µA@T

amb

=25oC

-40

o

C<T

amb

< +85oC

-25

-36

+25
+36

mV

I

kmin

Minimum Operating Current T

amb

=25oC4045

µA

-40

o

C<T

amb

< +85oC50

µA

∆V

ref

/∆T

Average Temperature Coeffi­cient

IK= 100µA

150 ppm/

o

C

∆V

k

/∆I

k

Reverse Breakdown Voltage
Change with Operating Current
Change

I

kmin<Ik

< 1mA @ T

amb

=25oC

-40

o

C<T

amb

< +85oC

0.3 0.7
1

mV

1mA < I

k

< 12mA @ T

amb

=25oC

-40

o

C<T

amb

< +85oC

2.5 5
7

mV

R

ka

Static Impedance

∆I

k

=45µA to 1mA

0.25 0.5

Ω

K

vh

Long Term Stability

I

K

= 100µA, t = 1000hrs

T

amb

=25oC

120 ppm

en Wideband Noise

I

K

= 100µA

10Hz <f < 10kHz

200

nV Hz

Note : Pdhas been calculatedwith T

amb

=25oC andTj= 125oC and

R

thja

= 200oC/W for TO92 package

R

thja

= 340oC/W for SOT23 package

TS821

3/7

ELECTRICAL CHARACTERISTICS

TS821B (0.5% Precision)

T

amb

=25oC (unless otherwise specified)

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

k

Reverse Breakdown Voltage

I

k

= 100µA@T

amb

=25oC

1.219 1.225 1.231 V

Reverse Breakdown Voltage
Tolerance

I

k

= 100µA@T

amb

=25oC

-40

o

C<T

amb

< +85oC

-6

-14

+6

+14

mV

I

kmin

Minimum Operating Current T

amb

=25oC4045

µA

-40

o

C<T

amb

< +85oC50

µA

∆Vref/∆T

Average Temperature Coeffi­cient

I

K

= 100µA

120 ppm/

o

C

∆V

k

/∆I

k

Reverse Breakdown Voltage
Change with Operating Current
Change

I

kmin<Ik

< 1mA @ T

amb

=25oC

-40

o

C<T

amb

< +85oC

0.3 0.7
1

mV

1mA < I

k

< 12mA @ T

amb

=25oC

-40

o

C<T

amb

< +85oC

2.5 5
7

mV

R

ka

Static Impedance

∆I

k

=45µA to 1mA

0.25 0.5

Ω

K

vh

Long Term Stability

I

K=

100µA, t = 1000hrs

T

amb

=25oC

120 ppm

en Wideband Noise

I

K

= 100µA

10Hz <f < 10kHz

200 nV/ Hz

ELECTRICAL CHARACTERISTICS

TS821A (1% Precision)

T

amb

=25oC (unless otherwise specified)

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

k

Reverse Breakdown Voltage

I

k

= 100µA@T

amb

=25oC

1.213 1.225 1.237 V

Reverse Breakdown Voltage
Tolerance

I

k

= 100µA@T

amb

=25oC

-40

o

C<T

amb

< +85oC

-12

-24

+12
+24

mV

I

kmin

Minimum Operating Current T

amb

=25oC4045

µA

-40

o

C<T

amb

< +85oC50

µA

∆V

ref

/∆T

Average Temperature Coeffi­cient

IK= 100µA

150 ppm/

o

C

∆V

k

/∆I

k

Reverse Breakdown Voltage
Change with Operating Current
Change

I

kmin<Ik

< 1mA @ T

amb

=25oC

-40

o

C<T

amb

< +85oC

0.3 0.7
1

mV

1mA < I

k

< 12mA @ T

amb

=25oC

-40

o

C<T

amb

< +85oC

2.5 5
7

mV

R

ka

Static Impedance

∆I

k

=45µA to 1mA

0.25 0.5

Ω

K

vh

Long Term Stability

I

K=

100µΑ, t = 1000hrs

T

amb

=25oC

120 ppm/kHr

en Wideband Noise

I

K

= 100µA

10Hz <f < 10kHz

200 nV/ Hz

TS821

4/7

Reference Voltageversus Cathode Current Reference Voltageversus Cathode Current

Reference Voltageversus TemperatureTestCircuit

Dynamic Impedance versus Temperature Noise Voltage versus Frequency

TS821

5/7

Pulse Response for Ik = 100mA TestCircuit for Pulse Response at Ik = 100mA

TestCircuit for Pulse Response at Ik = 1mAPulse Response for Ik = 1mA

TS821

6/7

PACKAGEMECHANICAL DATA

3 PINS - PLASTIC PACKAGETO92

Dim.

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

L 1.27 0.05
B 3.2 3.7 4.2 0.126 0.1457 0.1654

O1 4.45 5.00 5.2 0.1752 0.1969 0.2047

C 4.58 5.03 5.33 0.1803 0.198 0.2098
K 12.7 0.5

O2 0.407 0.5 0.508 0.016 0.0197 0.02

a 0.35 0.0138

TS821

7/7

Information furnishedis believed to beaccurate andreliable. However,STMicroelectronics assumes no responsibilityfor the conse­quences of use of such information nor for any infringement of patents orother rights of thirdparties whichmay result from itsuse.
No license isgrantedbyimplication or otherwise under any patentor patentrights of STMicroelectronics. Specifications mentioned
in thispublication are subject tochange without notice. This publication supersedes and replaces all information previously sup­plied. STMicroelectronics products are not authorized for use ascritical components in lifesupport devices or systemswithout ex­press written approval of STMicroelectronics.

 The ST logo is a trademark of STMicroelectronics

 2000 STMicroelectronics – Printed in Italy – All Rights Reserved

STMicroelectronics GROUP OF COMPANIES

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 http://www.st.com

PACKAGEMECHANICAL DATA

3 PINS -TINY PACKAGE (SOT23)

Dim.

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A 0.890 1.120 0.035 0.044
A1 0.010 0.100 0.0004 0.004
A2 0.880 0.950 1.020 0.037 0.040

b 0.300 0.500 0.012 0.020

c 0.080 0.200 0.003 0.008
D 2.800 2.900 3.040 0.110 0.114 0.120
E 2.100 2.640 0.083 0.104

E1 1.200 1.300 1.400 0.047 0.051 0.055

e 0.950 0.037

e1 1.900 0.075

L 0.400 0.500 0.600 0.016 0.020 0.024

L1 0.540 0.021

k0° 8°