Calogic LLC CL431S, CL431LP, CL431D Datasheet

CORPORATION

Precision Adjustable

Shunt Reference

CL431

FEATURES

•• Trimmed 0.5% Bandgap Reference

•• Nominal Temperat ur e Range Extended to 105

•• Temperature-Compensated: 30ppm/

o

C

•• Internal Amplifier w it h 150mA C a pability

•• Low Output Noise

•• Low Frequency Dynam ic Output Imp edan ce

PIN CONFIGU R ATI O N (Top View)

DESCRIPTION

o

C

The CL431 is an adjustable shunt regulat or designed t o act as
an open-loop error amplifier with a 2.5V temperature
compensated reference. Its highly accurate 0.5% bandgap
reference is perfect for applications requiring stability and
accuracy over temp er atur e and life.

Sharp turn-on characteristics and a low temperature
coefficient make the CL431 an excellent replacement for
many zener diode applications, programmable to any value
greater than 2.5V and up to 36V by using two external
resistors. As a combination error amplifier and reference, it
can be used to manage contr ol loops suc h a s s w itchin g p ower
supplies.

The CL431 can be used as a direct replacement for the
standard TL431.

ORDERING INFORMATION
Part Package Temperature Range

o

CL431LP TO-92 0 to 105
CL431D 8-Pin Plastic SOI C 0 to 105
CL431S SOT-89 0 to 105

C

o

C

o

C

TO-92 (LP)

CATHODE

ANODE

REFERENCE

1G-33

CATHODE

ANODE

ANODE

N/C

SOIC (D)

1

2

3

4

8

REFERENCE

7

ANODE

6

ANODE

5

N/C

1G-34

SOT-89 (S)

CATHODE

ANODE

REFERENCE

1G-35

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

CL431

CORPORATION

ABSOLUTE MAXIMUM RATINGS

SYMBOL PARAMETER RATING UNITS

V

KA

I

AK

I

KA

I

REF

P

D

T

J

T

STG

T

L

Exceeding ABSOLUTE MAXIM UM RATINGS may cause perm anen t damage. Extende d operat ion of the device at these or any other conditions
above those indicated in the operational sections of this specification is not recommended as it may adversely affect reliability and performance.

RECOMMENDED CONDITIONS

SYMBOL P ARAMETER RATING UNIT

V

KA

I

K

Cathode-Anode Reverse Breakdown 37 V
Anode-Cathode Forward Current 1 A
Operating Cathode Current 250 mA
Reference Inp ut Current 10 mA
Continuou s Power at 25oC

TO-92
8L SOIC
SOT-89

775
750

1000
Junction Temperature 150
Storage Temperature –65 to 150
Lead Temperature, Soldering 10 Seconds 300

TYPICAL THERMAL RESISTANCE

Cathode Voltage V

to 20 V

REF

Cathode Current 10 mA

PACKAGE θ

TO-92 160
SOIC 175
SOT-89 110

JA

o

C/W 80oC/W 6.3mW/oC

o

C/W 45oC/W 5.7mW/oC

o

C/W 8oC/W 9.1mW/oC

θ

JC

mW
mW
mW

o

C

o

C

o

C

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, T elephone: 510-656-2900, FAX: [phone]