Calogic LLC CL2431VS, CL2431IVS, CL2431IAVS, CL2431AVS Datasheet

Precision Adjustable
Shunt Reference

CL2431

CORPORATION

FEATURES

•• T emperatur e- Co m p ensated: 30ppm/

o

C

•• Trimmed 0.5% Bandgap Reference

•• Internal Amplifier with 100mA Capability

•• T empe rature Range: Extended to 0 to 105

o

C

•• Low Frequenc y Dynami c Output Imp edan ce: < 150mΩ

•• Low Output Noise

•• SOT-23 Replacement for TL431

PIN CONFIGU R ATIO N (Top View)

DESCRIPTION

The CL2431 is a three terminal adjustable voltage reference
designed to act as an open-loop error amplifier with a 2.5V
temperature compensated reference. Operating as a low
temperature coefficient zener which is programmable from

to 18V with two external resistors while providing a wide

V

REF

operating current range of 1.0mA to 100mA with a typical
dynamic impedance of 0.15Ω. As a shunt regulator the
device can be used as either a positive or negative voltage
reference. Active output circuitry provides a very sharp
turn-on characteristic, making the CL2431 an excellent
replacement for low-voltage zener diodes in many
applications, including on-board regulation and adjustable
power supplies.

ORDERING INFORMATION
Part Package Tolerance Temperature Range

o

CL2431VS SOT-23 1.0% 0 to +105
CL2431A V S SOT-23 0.5% 0 to +105
CL2431IVS SOT-23 1.0% -40 to +85
CL2431IAVS SOT-23 0.5% -40 to +85

C

o

C

o

C

o

C

SOT-23 (VS)

CATHODE

ANODE

REFERENCE

1J-22

CALOG IC CORPOR ATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]

CORPORATION

ABSOLUTE MAXIMUM RATINGS

SYMBOL PARAMETER RATING UNITS

CL2431

V
I
I
I
P

KA

AK

KA

REF

D

Cathode-Anode Reverse Breakdown 18 V
Anode-Cathode Forward Current 1 A
Operating Cathode Current 100 mA
Reference Inp ut Current 1 mA
Continuous Power Dissipation at 25oC

SOT-23 200 mW

T

J

T

STG

T

L

Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permane nt damag e to the device. This is a stress r ating
only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification

Junction Temperature 150
Storage Temperature –65 to 150
Lead Temperature, Soldering 10 Seconds 300

o

C

o

C

o

C

is not implied. Exposure to ab solut e ma ximu m rati ng conditi on s for ext ende d peri od s may affe ct reliab ili ty.

RECOMMENDED CONDITIONS

SYMBOL P ARAMETER RATING UNIT

V

KA

I

K

Cathode Voltage V

to 18 V

REF

Cathode Current 10 mA

TYPICAL THERMAL RESISTANCES

PACKAGE θ

SOT-23 575

JA

o

C/W 150oC/W 1.7mW/oC

θ

JC

TYPICAL DERATING

FUNCTIONAL BLOCK DIAGRAM

CATHODE (K)

REFERENCE (R)

+
–

2.5V

ANODE (A)

1G-36

CALOG IC CORPOR ATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]