KA431AZBU_技术文档

July 2013

KA431 / KA431A / KA431L

Programmable Shunt Regulator

Description

Features

The KA431 / KA431A / KA431L are three-terminal

adjustable regulators with a guaranteed thermal stability

over the operating temperature range. The output volt-

age can be set to any value between V_REF(approxi-

mately 2.5 V) and 36 V with two external resistors.

These devices have a typical dynamic output impedance

of 0.2 Ω. Active output circuitry provides a sharp turn-on

characteristic, making these devices excellent replace-

ments for Zener diodes in many applications.

• Programmable Output Voltage to 36 V

• Low Dynamic Output Impedance: 0.2 Ω (Typical)

• Sink Current Capability: 1.0 to 100 mA

• Equivalent Full-Range Temperature Coefficient

of 50 ppm/°C (Typical)

• Temperature Compensated for Operation

Over Full Rated Operating Temperature Range

• Low Output Noise Voltage

• Fast Turn-on Response

TO-92

1

1. Ref 2. Anode 3. Cathode

8-SOIC

1

1.Cathode 2.3.6.7.Anode

4.5.NC 8.Ref

Ordering Information

Operating

Temperature

Range

Output Voltage

Part Number

Top Mark Package Packing Method

Tolerance

KA431DTF

KA431ADTF

KA431AZBU

KA431AZTA

KA431LZTA

2%

431

8-SOIC

TO-92

Tape and Reel

Bulk

431A

-25 ~ +85°C

1%

KA431AZ

KA431LZ

Ammo

0.5%

Ammo

KA431 / KA431A / KA431L Rev. 1.2.1

www.fairchildsemi.com

1

Block Diagram

CATHODE

+

-

REFERENCE

2.5 Ref

ANODE

CATHODE (K)

REFERENCE (R)

ANODE(A)

Figure 1. Block Diagram

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-

ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-

tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The

absolute maximum ratings are stress ratings only. Values are at T_A= 25°C unless otherwise noted.

Symbol

V_KA

Parameter

Value

37

Unit

V

Cathode Voltage

I_KA

Cathode Current Range (Continuous)

Reference Input Current Range

-100 to +150

-0.05 to +10

mA

I_REF

Power Dissipation

TO-92, 8-SOIC Packages

P_D

770

160

mW

Thermal Resistance, Junction to Ambient

TO-92, 8-SOIC Packages

R_θjA

°C/W

T_OPR

T_J

Operating Temperature Range

Junction Temperature

-25 to +85

150

°C

T_STG

Storage Temperature Range

-65 to +150

Recommended Operating Conditions

The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended

operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not

recommend exceeding them or designing to Absolute Maximum Ratings.

Symbol

V_KA

Parameter

Min.

V_REF

1

Max.

36

Unit

V

Cathode Voltage

Cathode Current

I_KA

100

mA

KA431 / KA431A / KA431L Rev. 1.2.1

www.fairchildsemi.com

2

Electrical Characteristics

Values are at T_A= 25°C unless otherwise noted.

KA431

KA431A

KA431L

Symbol Parameter

Conditions

V_KA= V_REF

Unit

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

Reference

V_REF

,

2.450 2.500 2.550 2.470 2.495 2.520 2.482 2.495 2.508

V

Input Voltage I_KA= 10 mA

Deviation of

Reference

Input Voltage I_KA=10 mA

Over-

Temperature

V_KA= V_REF,

ΔV_REF

ΔT

/

4.5 17.0

-1.0 - 2.7

4.5 17.0

-1.0 - 2.7

4.5 17.0

-1.0 -2.7

mV

(1)

T_MIN≤ T_A≤ T_MAX

Ratio of

Change in

Reference

Input Voltage I_KA=

ΔV_KA

10V-V_REF

=

ΔV_REF

ΔV_KA

mV / V

to the

10 mA

ΔV_KA

=

-0.5 -2.0

Change in

Cathode

Voltage

36 V-10 V

Reference

Input Current R1 =10 kΩ, R2 = ∞

I_KA= 10 mA,

I_REF

1.5

0.4

4.0

1.2

1.5

0.4

4.0

1.2

1.5

0.4

4.0

1.2

μA

mA

Deviation of

Reference

I_KA= 10 mA,

Input Current

R1 = 10 kΩ, R2 = ∞

Over Full

ΔI_REF/ ΔT

T_A= Full Range

Temperature

Range

Minimum

Cathode

Current for

I_KA(MIN)

V_KA= V_REF

0.45 1.00

Regulation

Off - Stage

V_KA= 36 V,

I_KA(OFF)Cathode

Current

0.05 1.00

0.15 0.50

0.05 1.00

0.15 0.50

0.05 1.00

0.15 0.50

μA

V_REF= 0

V_KA= V_REF

I_KA=1 to 100 mA

f ≥ 1.0 kHz

,

Dynamic

Z_KA

Ω

Impedance

Note:

1. T_MIN= -25°C, T_MAX= +85°C.

KA431 / KA431A / KA431L Rev. 1.2.1

www.fairchildsemi.com

3

Test Circuits

Figure 3. Test Circuit for V_KA≥ V_REF

Figure 2. Test Circuit for V_KA= V_REF

Figure 4. Test Circuit for I_KA(OFF)

KA431 / KA431A / KA431L Rev. 1.2.1

www.fairchildsemi.com

4

Typical Performance Characteristics

Figure 6. Cathode Current vs. Cathode Voltage

Figure 5. Cathode Current vs. Cathode Voltage

Figure 7. Change in Reference Input Voltage vs.

Cathode Voltage

Figure 8. Dynamic Impedance Frequency

Figure 10. Pulse Response

Figure 9. Small Signal Voltage Amplification vs.

Frequency

KA431 / KA431A / KA431L Rev. 1.2.1

www.fairchildsemi.com

5

Typical Performance Characteristics (Continued)

140

A

B

A V_KA= Vref

120

100

80

60

40

20

0

B V_KA= 5.0 V @ I_K= 10_mA

C V_KA= 10 V @ I_K= 10_mA

D V_KA= 15 V @ I_K= 10_mA

T_A= 25^oC

C

D

100p

1n

10n

100n

1?

10?

C_L, LOAD CAPACITANCE

Figure11. Stability Boundary Conditions

KA431 / KA431A / KA431L Rev. 1.2.1

www.fairchildsemi.com

6

Typical Application

R













R

















1

V

= V

1 + -------

V

=

1 + ------- V

V

=

1 + ------- V



ref

O

ref

O

ref

R

2

O

R



2

Figure 12. Shunt Regulator

Figure 13. Output Control for Three-

Terminal Fixed Regulator

Figure 14. High-Current Shunt

Regulator

Figure 15. Current Limit or Current Source

Figure 16. Constant-Current Sink

KA431 / KA431A / KA431L Rev. 1.2.1

www.fairchildsemi.com

7

Physical Dimensions

TO-92 Bulk Type

D

D) DRAWING FILENAME: MKT-ZA03DREV3.

Figure 17. 3-Lead, TO-92, Molded, Standard Straight Lead

Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner

without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or

obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the

warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/dwg/ZA/ZA03D.pdf.

For current tape and reel specifications, visit Fairchild Semiconductor’s online packaging area:

http://www.fairchildsemi.com/packing_dwg/PKG-ZA03D_BK.pdf.

KA431 / KA431A / KA431L Rev. 1.2.1

www.fairchildsemi.com

8

Physical Dimensions (Continued)

TO-92 Ammo Type

DD) DRAWING FILENAME: MKT-ZA03FREV2.

Figure 18. 3-Lead, TO-92, Molded, 0.200 in Line Spacing Lead Form

Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner

without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or

obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the

warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/dwg/ZA/ZA03F.pdf.

For current tape and reel specifications, visit Fairchild Semiconductor’s online packaging area:

http://www.fairchildsemi.com/packing_dwg/PKG-ZA03F_BK.pdf.

KA431 / KA431A / KA431L Rev. 1.2.1

www.fairchildsemi.com

9

Physical Dimensions (Continued)

8-SOIC

5.00

4.80

A

0.65

3.81

8

5

B

1.75

6.20

5.80

4.00

3.80

5.60

1

4

PIN ONE

INDICATOR

1.27

(0.33)

0.25

C B A

LAND PATTERN RECOMMENDATION

SEE DETAIL A

0.25

0.10

0.25

0.19

C

1.75 MAX

0.10

0.51

0.33

OPTION A - BEVEL EDGE

0.50

x 45°

GAGE PLANE

0.25

R0.10

OPTION B - NO BEVEL EDGE

0.36

NOTES: UNLESS OTHERWISE SPECIFIED

8°

0°

0.90

0.40

A) THIS PACKAGE CONFORMS TO JEDEC

MS-012, VARIATION AA.

B) ALL DIMENSIONS ARE IN MILLIMETERS.

C) DIMENSIONS DO NOT INCLUDE MOLD

FLASH OR BURRS.

D) LANDPATTERN STANDARD: SOIC127P600X175-8M.

E) DRAWING FILENAME: M08Arev14

F) FAIRCHILD SEMICONDUCTOR.

SEATING PLANE

(1.04)

DETAIL A

SCALE: 2:1

Figure 19. 8-Lead, SOIC, JEDEC MS 0-12, 0.150 inch Narrow Body

Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner

without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or

obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the

warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/dwg/M0/M08A.pdf.

For current tape and reel specifications, visit Fairchild Semiconductor’s online packaging area:

http://www.fairchildsemi.com/packing_dwg/PKG-M08A_PSTS.pdf.

KA431 / KA431A / KA431L Rev. 1.2.1

www.fairchildsemi.com

10

TRADEMARKS

The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not

intended to be an exhaustive list of all such trademarks.

Sync-Lock™

2Cool¥

FPS¥

®

AccuPower¥

F-PFS¥

®*

AX-CAP^®*

BitSiC¥

Build it Now¥

CorePLUS¥

CorePOWER¥

CROSSVOLT¥

CTL¥

FRFET^®

PowerTrench^®

PowerXS™

Programmable Active Droop¥

QFET^®

Global Power Resource^SM

GreenBridge¥

Green FPS¥

Green FPS¥ e-Series¥

Gmax¥

TinyBoost¥

TinyBuck¥

TinyCalc¥

TinyLogic^®

TINYOPTO¥

TinyPower¥

TinyPWM¥

TinyWire¥

TranSiC¥

QS¥

Quiet Series¥

RapidConfigure¥

¥

GTO¥

IntelliMAX¥

Current Transfer Logic¥

DEUXPEED^®

Dual Cool™

EcoSPARK^®

EfficientMax¥

ISOPLANAR¥

Making Small Speakers Sound Louder

and Better™

Saving our world, 1mW/W/kW at a time™

SignalWise¥

SmartMax¥

TriFault Detect¥

TRUECURRENT^®*

PSerDes¥

MegaBuck¥

SMART START¥

Solutions for Your Success¥

SPM^®

ESBC¥

MICROCOUPLER¥

MicroFET¥

®

MicroPak¥

Fairchild^®

STEALTH¥

UHC^®

Ultra FRFET¥

UniFET¥

VCX¥

VisualMax¥

VoltagePlus¥

XS™

MicroPak2¥

Fairchild Semiconductor^®

FACT Quiet Series¥

FACT^®

SuperFET^®

MillerDrive¥

SuperSOT¥-3

MotionMax¥

SuperSOT¥-6

mWSaver¥

FAST^®

SuperSOT¥-8

OptoHiT¥

SupreMOS^®

FastvCore¥

OPTOLOGIC^®

OPTOPLANAR^®

FETBench¥

SyncFET¥

* Trademarks of System General Corporation, used under license by Fairchild Semiconductor.

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE

RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT

OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE

SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN,

WHICH COVERS THESE PRODUCTS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE

EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.

As used herein:

1. Life support devices or systems are devices or systems which, (a) are

intended for surgical implant into the body or (b) support or sustain

life, and (c) whose failure to perform when properly used in

accordance with instructions for use provided in the labeling, can be

reasonably expected to result in a significant injury of the user.

2. A critical component in any component of a life support, device, or

system whose failure to perform can be reasonably expected to

cause the failure of the life support device or system, or to affect its

safety or effectiveness.

ANTI-COUNTERFEITING POLICY

Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com,

under Sales Support.

Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their

parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed

applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the

proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild

Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors

are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical

and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise.

Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global

problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.

PRODUCT STATUS DEFINITIONS

Definition of Terms

Datasheet Identification

Product Status

Definition

Datasheet contains the design specifications for product development. Specifications may change

in any manner without notice.

Advance Information

Formative / In Design

Datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild

Semiconductor reserves the right to make changes at any time without notice to improve design.

Datasheet contains final specifications. Fairchild Semiconductor reserves the right to make

changes at any time without notice to improve the design.

Datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor.

The datasheet is for reference information only.

Preliminary

No Identification Needed

Obsolete

First Production

Full Production

Not In Production

Rev. I64

www.fairchildsemi.com


型号：	KA431AZBU
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	Programmable Shunt Regulator 可编程并联稳压器稳压器
文件：	总11页 (文件大小：230K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

KA431AZBU [FAIRCHILD]

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