TL431CLP Datasheet TL431CLP, TL431ILP, TL431ACDM | P1-P3

TL431 / TL431A / TL431B

PRODUCTION DATA SHEET

Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 1

Rev. 1.4, 2006-09-26

WWW.Microsemi .COM

Precision programmable References

TM

®

OBSOLETE

PRODUCT

N

OT

R

ECOMMENDED

F

OR

N

EW

D

ESIGNS

DESCRIPTION

The TL431/TL431A/TL431B series

precision adjustable three terminal

shunt voltage regulators are pin-to-pin

compatible with the industry standard

TL431. The output voltage of this

reference is programmable by using

two external resistors from 2.5V to

36V. These devices offer low output

impedance for improved load

regulation. The typical output

impedance of these devices is 200mΩ.

These devices find application in the

feedback path of switching power

supplies, OVP crowbar circuits,

reference for A/D, D/A, and as zener

diodes with improved turn-on

characteristics.

IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

KEY FEATURES

 INITIAL VOLTAGE REFERENCE

ACCURACY OF 0.4% (TL431B)

 SINK CURRENT CAPABILITY 1mA

to 100mA

 TYPICAL OUTPUT DYNAMIC

IMPEDANCE LESS THAN 200mΩ;

TYPICAL OUTPUT IMPEDANCE OF

THE TL431B LESS THAN 100mΩ

 ADJUSTABLE OUTPUT VOLTAGE

FROM 2.5V TO 36V

 AVAILABLE IN SURFACE-MOUNT

PACKAGES

 LOW OUTPUT NOISE

 TYPICAL EQUIVALENT FULL

RANGE TEMPERATURE

COEFFICIENT OF 30ppm/°C

 DIRECT PIN-TO-PIN

REPLACEMENT FOR INDUSTRY

STANDARD TL431 AND TL1431

PRODUCT HIGHLIGHT

Precision Programmable References

TL431/A

& TL431B

R1

R2

V

OUT

V

IN

OREF

R1

V=1+ •V

R2

⎛⎞

⎜⎟

⎝⎠

PACKAGE ORDER INFO

DM

Plastic SOIC

8-Pin

LP

Plastic TO-92

3-Pin

PK

Plastic TO-89

3 - Pin

T

A

(°C)

Initial

Tolerance

RoHS Compliant / Pb-free

Transition DC: 0440

RoHS Compliant / Pb-free

Transition DC: 0509

RoHS Compliant / Pb-free

Transition DC: 0518

2%

TL431CDM TL431CLP TL431CPK

1%

TL431ACDM TL431ACLP TL431ACPK

0 to 70

0.4%

TL431BCDM TL431BCLP TL431BCPK

2%

TL431IDM TL431ILP TL431IPK

1%

TL431AIDM TL431AILP TL431AIPK

-40 to 85

0.4%

TL431BIDM TL431BILP TL461BIPK

Note: All surface mount packages are available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LTL431AIDM-TR). The

TO-92 (LP) package is available in ammo-pack.

T

L

4

3

1

X

TL431 / TL431A / TL431B

PRODUCTION DATA SHEET

Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 2

Rev. 1.4, 2006-09-26

WWW.Microsemi .COM

Precision programmable References

TM

®

OBSOLETE

PRODUCT

N

OT

R

ECOMMENDED

F

OR

N

EW

D

ESIGNS

ABSOLUTE MAXIMUM RATINGS

Cathode to Anode Voltage (VKA)(Note 2) ....................................................... -0.3 to 37V

Reference Input Current (IREF).................................................................. -50µA to 10mA

Continuous Cathode Current (IK).......................................................... -100mA to 150mA

Operating Junction Temperature................................................................................ 150°C

Storage Temperature Range.........................................................................-65°C to 150°C

Package Peak Temp. for Solder Reflow (40 seconds maximum exposure) ... 260°C (+0 -5)

Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to

Ground. Currents are positive into, negative out of specified terminal

.

Note 2. Voltage values are with respect to the anode terminal unless otherwise noted.

THERMAL DATA

DM

Plastic SOIC 8-Pin

THERMAL RESISTANCE-JUNCTION TO AMBIENT, θ

JA

165°C/W

PK

Plastic TO-89 3-Pin

THERMAL RESISTANCE-JUNCTION TO AMBIENT, θ

JA

71°C/W

LP

Plastic TO-92 3-Pin

THERMAL RESISTANCE-JUNCTION TO AMBIENT, θ

JA

156°C/W

Junction Temperature Calculation: T

J

= T

A

+ (P

D

x θ

JA

).

The θ

JA

numbers are guidelines for the thermal performance of the device/pc-board system. All of the

above assume no ambient airflow.

BLOCK DIAGRAM

Cathode (K)

Anode (A)

V

REF

Ref (R)

PACKAGE PIN OUT

3. Cathode

2. Anode

1. Ref

LP PACKAGE

(Top View)

1

2

3

4

5

6

7

8

Cathode

N.C.

Anode

N.C. N.C.

Anode

Ref

DM PACKAGE

(Top View)

1

2

3

Ref

Anode

Cathode

PK PACKAGE

(Top View)

RoHS / Pb-free 100% Matte Tin Lead Finish

P

A

C

K

A

G

E

D

A

T

A

TL431 / TL431A / TL431B

PRODUCTION DATA SHEET

Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 3

Rev. 1.4, 2006-09-26

WWW.Microsemi .COM

Precision programmable References

TM

®

OBSOLETE

PRODUCT

N

OT

R

ECOMMENDED

F

OR

N

EW

D

ESIGNS

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, these specifications apply over the operating ambient temperature for the TL431C/TL431AC/TL431BC with

0°C <

T

A

< 70°C, and TL431I/TL431AI/TL431BI with -40°C < T

A

< 85°C

TL431/A/B

Parameter Symbol Test Conditions

Min Typ Max

Units

TL431 I

K

= 10mA, V

KA

= V

REF

, T

A

= 25°C 2440 2495 2550

TL431A I

K

= 10mA, V

KA

= V

REF

, T

A

= 25°C 2470 2495 2520

Reference Input

Voltage

TL431B

V

REF

I

K

= 10mA, V

KA

= V

REF

, T

A

= 25°C 2490 2500 2510

mV

TL431C I

K

= 10mA, V

KA

= V

REF

4 17

TL431I I

K

= 10mA, V

KA

= V

REF

5 30

TL431AC I

K

= 10mA, V

KA

= V

REF

4 17

TL431AI I

K

= 10mA, V

KA

= V

REF

5 30

TL431BC I

K

= 10mA, V

KA

= V

REF

4 15

Reference Drift

TL431BI

KA

REF

ΔV

I

K

= 10mA, V

KA

= V

REF

5 20

mV

TL431,

TL431A

I

K

= 10mA, V

KA

= 2.5V to 36V -1.4 -2.7

Voltage Ratio, Ref to

Cathode (Note 4)

TL431B

I

K

= 10mA, V

KA

= 2.5V to 36V -1.1 -2.0

mV/V

TL431,

TL431A

V

KA

= V

REF

, T

A

= 25°C 2 4

Reference Input

Current

TL431B

I

REF

V

KA

= V

REF

, T

A

= 25°C 1.5 1.9

µA

Minimum Operating Current I

MIN

V

KA

= V

REF

to 36V 0.4 1 mA

TL431 V

KA

= V

REF

to 36V, T

A

= 25°C 0.1 1

TL431A V

KA

= V

REF

to 36V, T

A

= 25°C 0.1 1

V

KA

= V

REF

to 36V, T

A

= Operating Range 2

Off-State Cathode

Current

TL431B

I

OFF

V

KA

= 36V, V

REF

= 0V, T

A

= 25°C 0.18 0.5

µA

TL431 I Z

KA

I

V

KA

= V

REF

, I

K

= 1mA to 100mA, f < 1kHz,

T

A

= 25°C

0.2 0.5

Dynamic Impedance

TL431B

V

KA

= V

REF

, I

K

= 1mA to 100mA, f < 1kHz,

T

A

= 25°C

0.1 0.2

Ω

Note 3: These parameters are guaranteed by design.

Note 4:

KA

REF

ΔV

Ratio of change in reference input voltage to the change in cathode voltage.

E

L

E

C

T

R

I

C

A

L

S

TL431CLP

TL431CLP

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