tl431详细英文数据手册

CATHODE

ANODE

REF

ANODE

TL431,TL431A,TL431B...D (SOIC) PACKAGE

(TOP VIEW)

CATHODE

REF

ANODE

TL431,TL431A,TL431B...P(PDIP), PS (SOP),

OR PW (TSSOP) P ACKAGE

(TOP VIEW)

NC?No internal connection

TL431,TL431A,TL431B...DBV (SOT-23-5) P ACKAGE

(TOP VIEW)

CATHODE

ANODE

REF

TL431,TL431A,TL431B...PK (SOT-89) PACKAGE

(TOP VIEW)

REF

ANODE

CATHODE

?Pin2 is attached to Substrate and must be

connected to ANODE or left open.

NC?No internal connection

TL432,TL432A,TL432B...DBV (SOT-23-5) P ACKAGE

(TOP VIEW)

ANODE

REF

CATHODE

NC?No internal connection

TL431,TL431A,TL431B...DBZ (SOT-23-3) P ACKAGE

(TOP VIEW)

TL432,TL432A,TL432B...DBZ (SOT-23-3) P ACKAGE

(TOP VIEW)

NC?No internal connection

REF

CATHODE

ANODE

CATHODE

REF

ANODE

TL432,TL432A,TL432B...PK (SOT-89) PACKAGE

(TOP VIEW)

REF

ANODE

CATHODE

TL431,TL431A,TL431B

TL432,TL432A,TL432B https://www.360docs.net/doc/1314600833.html, SLVS543M–AUGUST2004–REVISED JULY2012

PRECISION PROGRAMMABLE REFERENCE

Check for Samples:TL431,TL431A,TL431B,TL432,TL432A,TL432B

FEATURES

?Operation From?40°C to125°C?Typical Temperature Drift(TL431B)?Reference Voltage Tolerance at25°C–6mV(C Temp)

–0.5%...B Grade–14mV(I Temp,Q Temp)

–1%...A Grade?Low Output Noise

–2%...Standard Grade?0.2-ΩTypical Output Impedance

?Sink-Current Capability...1mA to100mA

?Adjustable Output Voltage...Vref to36V

Please be aware that an important notice concerning availability,standard warranty,and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.Copyright?2004–2012,Texas Instruments Incorporated Products conform to specifications per the terms of the Texas

CATHODE ANODE REF

TL431...KTP (PowerFLEX /TO-252) P ACKAGE

(TOP VIEW)

A N O D E

TL431A,TL431B ...DCK (SC-70) PACKAGE

(TOP VIEW)

123

654

CATHODE

NC REF

ANODE NC NC

NC ?No internal connection

TL431,TL431A,TL431B ...LP (TO-92/TO-226) P ACKAGE

(TOP VIEW)

CATHODE ANODE REF

TL431,TL431A,TL431B TL432,TL432A,TL432B

SLVS543M –AUGUST 2004–REVISED JULY 2012

https://www.360docs.net/doc/1314600833.html,

DESCRIPTION/ORDERING INFORMATION

The TL431and TL432are three-terminal adjustable shunt regulators,with specified thermal stability over applicable automotive,commercial,and military temperature ranges.The output voltage can be set to any value between Vref (approximately 2.5V)and 36V,with two external resistors (see Figure 17).These devices have a typical output impedance of 0.2Ω.Active output circuitry provides a very sharp turn-on characteristic,making these devices excellent replacements for Zener diodes in many applications,such as onboard regulation,adjustable power supplies,and switching power supplies.The TL432has exactly the same functionality and electrical specifications as the TL431,but has different pinouts for the DBV,DBZ,and PK packages.

Both the TL431and TL432devices are offered in three grades,with initial tolerances (at 25°C)of 0.5%,1%,and 2%,for the B,A,and standard grade,respectively.In addition,low output drift vs temperature ensures good stability over the entire temperature range.

The TL43xxC devices are characterized for operation from 0°C to 70°C,the TL43xxI devices are characterized for operation from –40°C to 85°C,and the TL43xxQ devices are characterized for operation from –40°C to 125°C.

2Submit Documentation Feedback Copyright ?2004–2012,Texas Instruments Incorporated

TL431,TL431A,TL431B

TL432,TL432A,TL432B https://www.360docs.net/doc/1314600833.html, SLVS543M–AUGUST2004–REVISED JULY2012

V ref TOLERANCE(25°C)=2%

TL431,TL432ORDERING INFORMATION(1)

TOP-SIDE T A PACKAGE(2)ORDERABLE PART NUMBER

MARKING(3) PDIP(P)Tube of50TL431CP TL431CP

Tube of75TL431CD

SOIC(D)TL431C

Reel of2500TL431CDR

SOP(PS)Reel of2000TL431CPSR T431

Reel of3000TL431CDBVR

T3C_

Reel of250TL431CDBVT

SOT-23-5(DBV)

Reel of3000TL432CDBVR

T4C_

Reel of250TL432CDBVT

Reel of3000TL431CDBZR

T3C_ 0°C to70°C Reel of250TL431CDBZT

SOT-23-3(DBZ)

Reel of3000TL432CDBZR

T4C_

Reel of250TL432CDBZT

TL431CPK43

SOT-89(PK)Reel of1000

TL432CPK2A

Bulk of1000,straight lead TL431CLP

TO-226/TO-92(LP)Ammo of2000,formed lead TL431CLPM TL431C

Reel of2000,formed lead TL431CLPR

Tube of150TL431CPW

TSSOP(PW)T431

Reel of2000TL431CPWR

PDIP(P)Tube of50TL431IP TL431IP

Tube of75TL431ID

SOIC(D)TL431I

Reel of2500TL431IDR

Reel of3000TL431IDBVR

T3I_

Reel of250TL431IDBVT

SOT-23-5(DBV)

Reel of3000TL432IDBVR

T4I_

Reel of250TL432IDBVT

Reel of3000TL431IDBZR

-40°C to85°C T3I_

Reel of250TL431IDBZT

SOT-23-3(DBZ)

Reel of3000TL432IDBZR

T4I_

Reel of250TL432IDBZT

TL431IPK3I

SOT-89(PK)Reel of1000

TL432IPK2B

Bulk of1000,straight lead TL431ILP

TO-226/TO-92(LP)Ammo of2000,formed lead TL431ILPM TL431I

Reel of2000,formed lead TL431ILPR

(1)For the most current package and ordering information,see the Package Option Addendum at the end of this document,or see the TI

web site at https://www.360docs.net/doc/1314600833.html,.

(2)Package drawings,thermal data,and symbolization are available at https://www.360docs.net/doc/1314600833.html,/packaging.

(3)DBV/DBZ/DCK:The actual top-side marking has one additional character that designates the wafer fab/assembly site.

TL431,TL431A,TL431B

TL432,TL432A,TL432B

SLVS543M–AUGUST2004–REVISED https://www.360docs.net/doc/1314600833.html,

V ref TOLERANCE(25°C)=2%

TL431,TL432ORDERING INFORMATION(1)(continued)

TOP-SIDE T A PACKAGE(2)ORDERABLE PART NUMBER

MARKING(3)

Reel of3000TL431QDBVR

T3Q_

Reel of250TL431QDBVT

SOT-23-5(DBV)

Reel of3000TL432QDBVR

T4Q_

Reel of250TL432QDBVT

Reel of3000TL431QDBZR

T3Q_

Reel of250TL431QDBZT

-40°C to125°C SOT-23-3(DBZ)

Reel of3000TL432QDBZR

T4Q_

Reel of250TL432QDBZT

TL431QPK3Q

SOT-89(PK)Reel of1000

TL432QPK2C

Reel of1000TL431QDCKR

SC-70(DCK)T6_

Reel of250TL431QDCKT

4Submit Documentation Feedback Copyright?2004–2012,Texas Instruments Incorporated

TL431,TL431A,TL431B

TL432,TL432A,TL432B https://www.360docs.net/doc/1314600833.html, SLVS543M–AUGUST2004–REVISED JULY2012

V ref TOLERANCE(25°C)=1%

TL431A,TL432A ORDERING INFORMATION(1)

TOP-SIDE T A PACKAGE(2)ORDERABLE PART NUMBER

MARKING(3) PDIP(P)Tube of50TL431ACP TL431ACP

SC-70(DCK)Reel of3000TL431ACDCKR T4_

Reel of250TL431ACDCKT

SOIC(D)Tube of75TL431ACD431AC

Reel of2500TL431ACDR

SOP(PS)Reel of2000TL431ACPSR T431A

SOT-23-5(DBV)Reel of3000TL431ACDBVR TAC_

Reel of250TL431ACDBVT

Reel of3000TL432ACDBVR T4B_

Reel of250TL432ACDBVT

SOT-23-3(DBZ)Reel of3000TL431ACDBZR TAC_ 0°C to70°C

Reel of250TL431ACDBZT

Reel of3000TL432ACDBZR T4B_

Reel of250TL432ACDBZT

SOT-89(PK)Reel of1000TL431ACPK4A

TL432ACPK2D

TO-226/TO-92(LP)Bulk of1000,straight lead TL431ACLP TL431AC

Ammo of2000,formed lead TL431ACLPM

Reel of2000,formed lead TL431ACLPR

Reel of2000,formed lead TL431ACLPRE3

TSSOP(PW)Tube of150TL431ACPW T431A

Reel of2000TL431ACPWR

PDIP(P)Tube of50TL431AIP TL431AIP

SC-70(DCK)Reel of3000TL431AIDCKR T5_

Reel of250TL431AIDCKT

SOIC(D)Tube of75TL431AID431AI

Reel of2500TL431AIDR

SOT-23-5(DBV)Reel of3000TL431AIDBVR TAI_

Reel of250TL431AIDBVT

Reel of3000TL432AIDBVR T4A_

Reel of250TL432AIDBVT

-40°C to85°C

SOT-23-3(DBZ)Reel of3000TL431AIDBZR TAI_

Reel of250TL431AIDBZT

Reel of3000TL432AIDBZR T4A_

Reel of250TL432AIDBZT

SOT-89(PK)Reel of1000TL431AIPK4B

TL432AIPK2E

TO-226/TO-92(LP)Bulk of1000,straight lead TL431AILP TL431AI

Ammo of2000,formed lead TL431AILPM

Reel of2000,formed lead TL431AILPR

(1)For the most current package and ordering information,see the Package Option Addendum at the end of this document,or see the TI

web site at https://www.360docs.net/doc/1314600833.html,.

(2)Package drawings,thermal data,and symbolization are available at https://www.360docs.net/doc/1314600833.html,/packaging.

(3)DBV/DBZ/DCK:The actual top-side marking has one additional character that designates the wafer fab/assembly site.

TL431,TL431A,TL431B

TL432,TL432A,TL432B

SLVS543M–AUGUST2004–REVISED https://www.360docs.net/doc/1314600833.html,

V ref TOLERANCE(25°C)=1%

TL431A,TL432A ORDERING INFORMATION(1)(continued)

TOP-SIDE T A PACKAGE(2)ORDERABLE PART NUMBER

MARKING(3) SOT-23-5(DBV)Reel of3000TL431AQDBVR TAQ_

Reel of250TL431AQDBVT

Reel of3000TL432AQDBVR T4D_

Reel of250TL432AQDBVT

SOT-23-3(DBZ)Reel of3000TL431AQDBZR TAQ_

Reel of250TL431AQDBZT

-40°C to125°C

Reel of3000TL432AQDBZR T4D_

Reel of250TL432AQDBZT

SOT-89(PK)Reel of1000TL431AQPK4D

TL432AQPK2F

SC-70(PK)Reel of1000TL431AQDCKR T7_

Reel of250TL431AQDCKT

6Submit Documentation Feedback Copyright?2004–2012,Texas Instruments Incorporated

TL431,TL431A,TL431B

TL432,TL432A,TL432B https://www.360docs.net/doc/1314600833.html, SLVS543M–AUGUST2004–REVISED JULY2012

V ref TOLERANCE(25°C)=0.5%

TL431B,TL432B ORDERING INFORMATION(1)

TOP-SIDE T A PACKAGE(2)ORDERABLE PART NUMBER

MARKING(3) PDIP(P)Tube of50TL431BCP TL431BCP

SC-70(DCK)Reel of3000TL431BCDCKR T2_

Reel of250TL431BCDCKT

SOIC(D)Tube of75TL431BCD T431B

Reel of2500TL431BCDR

SOP(PS)Reel of2000TL431BCPSR TL431B

SOT-23-5(DBV)Reel of3000TL431BCDBVR T3G_

Reel of250TL431BCDBVT

Reel of3000TL432BCDBVR TBC_

Reel of250TL432BCDBVT

0°C to70°C SOT-23-3(DBZ)Reel of3000TL431BCDBZR T3G_

Reel of250TL431BCDBZT

Reel of3000TL432BCDBZR TBC_

Reel of250TL432BCDBZT

SOT-89(PK)Reel of1000TL431BCPK4C

TL432BCPK2G

TO-226/TO-92(LP)Bulk of1000,straight lead TL431BCLP TL431B

Ammo of2000,formed lead TL431BCLPM

Reel of2000,formed lead TL431BCLPR

TSSOP(PW)Tube of150TL431BCPW T431B

Reel of2000TL431BCPWR

PDIP(P)Tube of50TL431BIP TL431BIP

SC-70(DCK)Reel of3000TL431BIDCKR T3_

Reel of250TL431BIDCKT

SOIC(D)Tube of75TL431BID Z431B

Reel of2500TL431BIDR

SOT-23-5(DBV)Reel of3000TL431BIDBVR T3F_

Reel of250TL431BIDBVT

Reel of3000TL432BIDBVR T4F_

Reel of250TL432BIDBVT

-40°C to85°C

SOT-23-3(DBZ)Reel of3000TL431BIDBZR T3F_

Reel of250TL431BIDBZT

Reel of3000TL432BIDBZR T4F_

Reel of250TL432BIDBZT

SOT-89(PK)Reel of1000TL431BIPK4I

TL432BIPK2H

TO-226/TO-92(LP)Bulk of1000,straight lead TL431BILP Z431B

Ammo of2000,formed lead TL431BILPM

Reel of2000,formed lead TL431BILPR

(1)For the most current package and ordering information,see the Package Option Addendum at the end of this document,or see the TI

web site at https://www.360docs.net/doc/1314600833.html,.

(2)Package drawings,thermal data,and symbolization are available at https://www.360docs.net/doc/1314600833.html,/packaging.

(3)DBV/DBZ/DCK:The actual top-side marking has one additional character that designates the wafer fab/assembly site.

TL431,TL431A,TL431B

TL432,TL432A,TL432B

SLVS543M–AUGUST2004–REVISED https://www.360docs.net/doc/1314600833.html,

V ref TOLERANCE(25°C)=0.5%

TL431B,TL432B ORDERING INFORMATION(1)(continued)

TOP-SIDE T A PACKAGE(2)ORDERABLE PART NUMBER

MARKING(3) SOIC(D)Tube of75TL431BQD T431BQ

Reel of2500TL431BQDR

SOT-23-5(DBV)Reel of3000TL431BQDBVR T3H_

Reel of250TL431BQDBVT

Reel of3000TL432BQDBVR T4H_

Reel of250TL432BQDBVT

SOT-23-3(DBZ)Reel of3000TL431BQDBZR T3H_

Reel of250TL431BQDBZT

-40°C to125°C Reel of3000TL432BQDBZR T4H_

Reel of250TL432BQDBZT

SOT-89(PK)Reel of1000TL431BQPK3H

TL432BQPK2J

TO-226/TO-92(LP)Bulk of1000,straight lead TL431BQLP T431BQ

Ammo of2000,formed lead TL431BQLPM

Reel of2000,formed lead TL431BQLPR

SC-70(DCK)Reel of1000TL431BQDCKR T8_

Reel of250TL431BQDCKT

8Submit Documentation Feedback Copyright?2004–2012,Texas Instruments Incorporated

ANODE

REF

CATHODE

ANODE

REF

CATHODE

ANODE

TL431,TL431A,TL431B TL432,TL432A,TL432B

https://www.360docs.net/doc/1314600833.html,

SLVS543M –AUGUST 2004–REVISED JULY 2012

Figure 1.SYMBOL

Figure 2.FUNCTIONAL BLOCK DIAGRAM

Figure 3.EQUIVALENT SCHEMATIC

NOTE:All component values are nominal.

TL431,TL431A,TL431B

TL432,TL432A,TL432B

SLVS543M–AUGUST2004–REVISED https://www.360docs.net/doc/1314600833.html, ABSOLUTE MAXIMUM RATINGS(1)

over operating free-air temperature range(unless otherwise noted)

MIN MAX UNIT

V KA Cathode voltage(2)37V

I KA Continuous cathode current range–100150mA

I I(ref)Reference input current range–0.0510mA

T J Operating virtual junction temperature150°C

T stg Storage temperature range–65150°C (1)Stresses beyond those listed under"absolute maximum ratings"may cause permanent damage to the device.These are stress ratings

only,and functional operation of the device at these or any other conditions beyond those indicated under"recommended operating conditions"is not implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)All voltage values are with respect to ANODE,unless otherwise noted.

PACKAGE THERMAL DATA(1)

PACKAGE BOARDθJCθJA

PDIP(P)High K,JESD51-757°C/W85°C/W

SC-70(DCK)High K,JESD51-7259°C/W87°C/W

SOIC(D)High K,JESD51-739°C/W97°C/W

SOP(PS)High K,JESD51-746°C/W95°C/W

SOT-89(PK)High K,JESD51-79°C/W52°C/W

SOT-23-5(DBV)High K,JESD51-7131°C/W206°C/W

SOT-23-3(DBZ)High K,JESD51-776°C/W206°C/W TO-92(LP)High K,JESD51-755°C/W140°C/W

TSSOP(PW)High K,JESD51-765°C/W149°C/W

(1)Maximum power dissipation is a function of T J(max),θJA,and T A.The maximum allowable power dissipation at any allowable ambient

temperature is P D=(T J(max)–T A)/θJA.Operating at the absolute maximum T J of150°C can affect reliability. RECOMMENDED OPERATING CONDITIONS

MIN MAX UNIT

V KA Cathode voltage V ref36V

I KA Cathode current1100mA

TL43xxC070

T A Operating free-air temperature TL43xxI–4085°C

TL43xxQ–40125

10Submit Documentation Feedback Copyright?2004–2012,Texas Instruments Incorporated

R2R1|z |KA (

1 +

?I ?V

|z'| =?I KA

?V KA

|z | =

KA (2)

The dynamic impedance is defined as:

When the device is operating with two external resistors (see Figure 5),the total dynamic impedance of the circuit is given by:

which is approximately equal to

.TL431,TL431A,TL431B TL432,TL432A,TL432B

https://www.360docs.net/doc/1314600833.html,

SLVS543M –AUGUST 2004–REVISED JULY 2012

ELECTRICAL CHARACTERISTICS

over recommended operating conditions,T A =25°C (unless otherwise noted)

TL431C,TL432C PARAMETER

TEST CIRCUIT

TEST CONDITIONS

UNIT MIN TYP MAX V ref Reference voltage

Figure 4V KA =V ref ,I KA =10mA 2440

2495

2550mV SOT23-3and TL432Deviation of reference input 616V KA =V ref ,devices V I(dev)voltage over full temperature Figure 4

I KA =10mA,range (1)

All other devices 425Ratio of change in reference ΔV KA =10V ?V ref -1.4-2.7ΔV ref /voltage to the change in Figure 5I KA =10mA

mV/V ΔV KA ΔV KA =36V ?10V

-1-2cathode voltage I ref Reference input current Figure 5I KA =10mA,R1=10k ?,R2=∞24μA Deviation of reference input I I(dev)current over full temperature Figure 5I KA =10mA,R1=10k ?,R2=∞0.4 1.2μA range (1)

Minimum cathode current for I min Figure 4V KA =V ref

0.41mA regulation

I off Off-state cathode current Figure 6V KA =36V,V ref =0

0.11μA |z KA |Dynamic impedance (2)

Figure 4

V KA =V ref ,f ≤1kHz,I KA =1mA to 100mA

0.2

0.5

?(1)

The deviation parameters V ref(dev)and I ref(dev)are defined as the differences between the maximum and minimum values obtained over the rated average full-range αVref is positive or negative,depending on whether minimum V ref or maximum V ref ,respectively,occurs at the lower temperature.

R2R1|z |KA (

1 +

?I ?V

|z'| =?I KA

?V KA

|z | =

KA (2)

The dynamic impedance is defined as:

When the device is operating with two external resistors (see Figure 5),the total dynamic impedance of the circuit is given by:

which is approximately equal to

.TL431,TL431A,TL431B TL432,TL432A,TL432B

SLVS543M –AUGUST 2004–REVISED JULY 2012

https://www.360docs.net/doc/1314600833.html,

ELECTRICAL CHARACTERISTICS

over recommended operating conditions,T A =25°C (unless otherwise noted)

TL431I,TL432I PARAMETER

TEST CIRCUIT

TEST CONDITIONS

UNIT MIN TYP MAX V ref Reference voltage

Figure 4V KA =V ref ,I KA =10mA 2440

24952550mV SOT23-3and TL432Deviation of reference input 1434V KA =V ref ,devices V I(dev)voltage over full temperature Figure 4

I KA =10mA range (1)

All other devices 550Ratio of change in reference ΔV KA =10V ?V ref -1.4-2.7ΔV ref /voltage to the change in Figure 5I KA =10mA

mV/V ΔV KA ΔV KA =36V ?10V

Minimum cathode current for I min Figure 4V KA =V ref

0.41mA regulation

I off Off-state cathode current Figure 6V KA =36V,V ref =0

0.11μA |z KA |Dynamic impedance (2)

Figure 4

V KA =V ref ,f ≤1kHz,I KA =1mA to 100mA

0.2

0.5

?(1)

12Submit Documentation Feedback Copyright ?2004–2012,Texas Instruments Incorporated

R2R1|z |KA (

1 +

?I ?V

|z'| =?I KA

?V KA

|z | =

KA (2)

The dynamic impedance is defined as:

When the device is operating with two external resistors (see Figure 5),the total dynamic impedance of the circuit is given by:

which is approximately equal to

.TL431,TL431A,TL431B TL432,TL432A,TL432B

https://www.360docs.net/doc/1314600833.html,

SLVS543M –AUGUST 2004–REVISED JULY 2012

ELECTRICAL CHARACTERISTICS

over recommended operating conditions,T A =25°C (unless otherwise noted)

TL431Q,TL432Q PARAMETER

TEST CIRCUIT

TEST CONDITIONS

UNIT MIN TYP MAX V ref Reference voltage

Figure 4V KA =V ref ,I KA =10mA 2440

24952550mV Deviation of reference input V I(dev)voltage over full temperature Figure 4

V KA =V ref ,I KA =10mA

1434mV

range (1)

Ratio of change in reference ΔV KA =10V ?V ref -1.4-2.7ΔV ref /voltage to the change in Figure 5I KA =10mA

mV/V ΔV KA ΔV KA =36V ?10V

Minimum cathode current for I min Figure 4V KA =V ref

0.41mA regulation

I off Off-state cathode current Figure 6V KA =36V,V ref =0

0.11μA |z KA |Dynamic impedance (2)

Figure 4

V KA =V ref ,f ≤1kHz,I KA =1mA to 100mA

0.2

0.5

?(1)

The deviation parameters V ref(dev)and I ref(dev)are defined as the differences between the maximum and minimum values obtained over the rated full-range αVref is positive or negative,depending on whether minimum V ref or maximum V ref ,respectively,occurs at the lower temperature.

R2R1|z |KA (

1 +

?I ?V

|z'| =?I KA

?V KA

|z | =

KA (2)

The dynamic impedance is defined as:

When the device is operating with two external resistors (see Figure 5),the total dynamic impedance of the circuit is given by:

which is approximately equal to

.TL431,TL431A,TL431B TL432,TL432A,TL432B

SLVS543M –AUGUST 2004–REVISED JULY 2012

https://www.360docs.net/doc/1314600833.html,

ELECTRICAL CHARACTERISTICS

over recommended operating conditions,T A =25°C (unless otherwise noted)

TL431AC,TL432AC PARAMETER

TEST CIRCUIT

TEST CONDITIONS

UNIT MIN TYP MAX V ref Reference voltage

Figure 4V KA =V ref ,I KA =10mA 2470

2495

2520mV SOT23-3and TL432Deviation of reference input 616V KA =V ref ,devices V I(dev)voltage over full temperature Figure 4

I KA =10mA range (1)

All other devices 425Ratio of change in reference ΔV KA =10V ?V ref -1.4-2.7ΔV ref /voltage to the change in Figure 5I KA =10mA

mV/V ΔV KA ΔV KA =36V ?10V

Minimum cathode current for I min Figure 4V KA =V ref

0.40.6mA regulation

I off Off-state cathode current Figure 6V KA =36V,V ref =0

0.10.5μA |z KA |Dynamic impedance (2)

Figure 4

V KA =V ref ,f ≤1kHz,I KA =1mA to 100mA

0.2

0.5

?(1)

14Submit Documentation Feedback Copyright ?2004–2012,Texas Instruments Incorporated

R2R1|z |KA (

1 +

?I ?V

|z'| =?I KA

?V KA

|z | =

KA (2)

The dynamic impedance is defined as:

When the device is operating with two external resistors (see Figure 5),the total dynamic impedance of the circuit is given by:

which is approximately equal to

.TL431,TL431A,TL431B TL432,TL432A,TL432B

https://www.360docs.net/doc/1314600833.html,

SLVS543M –AUGUST 2004–REVISED JULY 2012

ELECTRICAL CHARACTERISTICS

over recommended operating conditions,T A =25°C (unless otherwise noted)

TL431AI,TL432AI PARAMETER

TEST CIRCUIT

TEST CONDITIONS

UNIT MIN TYP MAX V ref Reference voltage

Figure 4V KA =V ref ,I KA =10mA 2470

24952520mV SOT23-3and TL432Deviation of reference input 1434V KA =V ref ,devices V I(dev)voltage over full temperature Figure 4

I KA =10mA range (1)

All other devices 550Ratio of change in reference ΔV KA =10V ?V ref -1.4-2.7ΔV ref /voltage to the change in Figure 5I KA =10mA

mV/V ΔV KA ΔV KA =36V ?10V

Minimum cathode current for I min Figure 4V KA =V ref

0.40.7mA regulation

I off Off-state cathode current Figure 6V KA =36V,V ref =0

0.10.5μA |z KA |Dynamic impedance (2)

Figure 4

V KA =V ref ,f ≤1kHz,I KA =1mA to 100mA

0.2

0.5

?(1)

R2R1|z |KA (

1 +

?I ?V

|z'| =?I KA

?V KA

|z | =

KA (2)

The dynamic impedance is defined as:

When the device is operating with two external resistors (see Figure 5),the total dynamic impedance of the circuit is given by:

which is approximately equal to

.TL431,TL431A,TL431B TL432,TL432A,TL432B

SLVS543M –AUGUST 2004–REVISED JULY 2012

https://www.360docs.net/doc/1314600833.html,

ELECTRICAL CHARACTERISTICS

over recommended operating conditions,T A =25°C (unless otherwise noted)

TL431AQ,TL432AQ PARAMETER

TEST CIRCUIT

TEST CONDITIONS

UNIT MIN TYP MAX V ref Reference voltage

Figure 4V KA =V ref ,I KA =10mA 2470

24952520mV Deviation of reference input V I(dev)voltage over full temperature Figure 4

V KA =V ref ,I KA =10mA

1434mV

range (1)

Ratio of change in reference ΔV KA =10V ?V ref -1.4-2.7ΔV ref /voltage to the change in Figure 5I KA =10mA

mV/V ΔV KA ΔV KA =36V ?10V

Minimum cathode current for I min Figure 4V KA =V ref

0.40.7mA regulation

I off Off-state cathode current Figure 6V KA =36V,V ref =0

0.10.5μA |z KA |Dynamic impedance (2)

Figure 4

V KA =V ref ,f ≤1kHz,I KA =1mA to 100mA

0.2

0.5

?(1)

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R2R1|z |KA (

1 +

?I ?V

|z'| =?I KA

?V KA

|z | =

KA (2)

The dynamic impedance is defined as:

When the device is operating with two external resistors (see Figure 5),the total dynamic impedance of the circuit is given by:

which is approximately equal to

.TL431,TL431A,TL431B TL432,TL432A,TL432B

https://www.360docs.net/doc/1314600833.html,

SLVS543M –AUGUST 2004–REVISED JULY 2012

ELECTRICAL CHARACTERISTICS

over recommended operating conditions,T A =25°C (unless otherwise noted)

TL431BC,TL432BC PARAMETER

TEST CIRCUIT

TEST CONDITIONS

UNIT MIN TYP MAX V ref Reference voltage

Figure 4V KA =V ref ,I KA =10mA 2483

2495

2507mV Deviation of reference input V I(dev)voltage over full temperature Figure 4

V KA =V ref ,I KA =10mA

616mV

range (1)

Ratio of change in reference ΔV KA =10V ?V ref -1.4-2.7ΔV ref /voltage to the change in Figure 5I KA =10mA

mV/V ΔV KA ΔV KA =36V ?10V

Minimum cathode current for I min Figure 4V KA =V ref

0.40.6mA regulation

I off Off-state cathode current Figure 6V KA =36V,V ref =0

0.10.5μA |z KA |Dynamic impedance (2)

Figure 4

V KA =V ref ,f ≤1kHz,I KA =1mA to 100mA

0.2

0.5

?(1)

R2R1|z |KA (

1 +

?I ?V

|z'| =?I KA

?V KA

|z | =

KA (2)

The dynamic impedance is defined as:

When the device is operating with two external resistors (see Figure 5),the total dynamic impedance of the circuit is given by:

which is approximately equal to

.TL431,TL431A,TL431B TL432,TL432A,TL432B

SLVS543M –AUGUST 2004–REVISED JULY 2012

https://www.360docs.net/doc/1314600833.html,

ELECTRICAL CHARACTERISTICS

over recommended operating conditions,T A =25°C (unless otherwise noted)

TL431BI,TL432BI PARAMETER

TEST CIRCUIT

TEST CONDITIONS

UNIT MIN TYP MAX V ref Reference voltage

Figure 4V KA =V ref ,I KA =10mA 2483

24952507mV Deviation of reference input V I(dev)voltage over full temperature Figure 4

V KA =V ref ,I KA =10mA

1434mV

range (1)

Ratio of change in reference ΔV KA =10V ?V ref -1.4-2.7ΔV ref /voltage to the change in Figure 5I KA =10mA

mV/V ΔV KA ΔV KA =36V ?10V

Minimum cathode current for I min Figure 4V KA =V ref

0.40.7mA regulation

I off Off-state cathode current Figure 6V KA =36V,V ref =0

0.10.5μA |z KA |Dynamic impedance (2)

Figure 4

V KA =V ref ,f ≤1kHz,I KA =1mA to 100mA

0.2

0.5

?(1)

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R2R1|z |KA (

1 +

?I ?V

|z'| =?I KA

?V KA

|z | =

KA (2)

The dynamic impedance is defined as:

When the device is operating with two external resistors (see Figure 5),the total dynamic impedance of the circuit is given by:

which is approximately equal to

.TL431,TL431A,TL431B TL432,TL432A,TL432B

https://www.360docs.net/doc/1314600833.html,

SLVS543M –AUGUST 2004–REVISED JULY 2012

ELECTRICAL CHARACTERISTICS

over recommended operating conditions,T A =25°C (unless otherwise noted)

TL431BQ,TL432BQ PARAMETER

TEST CIRCUIT

TEST CONDITIONS

UNIT MIN TYP MAX V ref Reference voltage

Figure 4V KA =V ref ,I KA =10mA 2483

24952507mV Deviation of reference input V I(dev)voltage over full temperature Figure 4

V KA =V ref ,I KA =10mA

1434mV

range (1)

Ratio of change in reference ΔV KA =10V ?V ref -1.4-2.7ΔV ref /voltage to the change in Figure 5I KA =10mA

mV/V ΔV KA ΔV KA =36V ?10V

Minimum cathode current for I min Figure 4V KA =V ref

0.40.7mA regulation

I off Off-state cathode current Figure 6V KA =36V,V ref =0

0.10.5μA |z KA |Dynamic impedance (2)

Figure 4

V KA =V ref ,f ≤1kHz,I KA =1mA to 100mA

0.2

0.5

?(1)

V KA

Input

V KA

ref ref

=V1++I×R1

?÷

è?

Input V KA

TL431,TL431A,TL431B

TL432,TL432A,TL432B

SLVS543M–AUGUST2004–REVISED https://www.360docs.net/doc/1314600833.html,

PARAMETER MEASUREMENT INFORMATION

Figure4.Test Circuit for V KA=V ref

Figure5.Test Circuit for V KA>V ref

Figure6.Test Circuit for I off

20Submit Documentation Feedback Copyright?2004–2012,Texas Instruments Incorporated