Very low drop voltage regulators with inhibit

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  • The KF series are very low drop regulators available in SO-8 and DPAK packages and in a wide range of output voltages.

    The very low dropout voltage (0.4 V) and the very low quiescent current make them particularly suitable for low noise, low power applications and especially in battery powered systems.
    A shutdown logic control function is available (pin 5, TTL compatible). This means that when the device is used as a local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. It requires only a 2.2 μF capacitor for stability allowing space and cost saving.

    主要特性

    • Very low dropout voltage (0.4 V)
    • Very low quiescent current (typ. 50 μA in OFF mode, 500 μA in ON mode)
    • Output current up to 500 mA
    • Logic-controlled electronic shutdown
    • Output voltages of 2.5; 3.3; 5; 8 V
    • Internal current and thermal limit
    • Only 2.2 μF for stability
    • Available in ± 2 % accuracy at 25 °C
    • Supply voltage rejection: 70 db (typ.)
    • Temperature range: - 40 to 125 °C

样片和购买

型号
Package
Packing Type
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
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KF33BD-TR SO-8 Tape And Reel 3.3 2 0.5
Active
0.32 1000
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ECCN (US):

EAR99

Country of Origin:

CHINA

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KF80BDT-TR DPAK Tape And Reel 8 2 0.5
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0.343 1000
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ECCN (US):

EAR99

Country of Origin:

CHINA

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KF50BDT-TR DPAK Tape And Reel 5 2 0.5
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0.343 1000
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EAR99

Country of Origin:

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KF50BD-TR SO-8 Tape And Reel 5 2 0.5
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0.32 1000
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ECCN (US):

EAR99

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CHINA

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KF25BD-TR SO-8 Tape And Reel 2.5 2 0.5
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0.32 1000
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EAR99

Country of Origin:

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KF25BDT-TR DPAK Tape And Reel 2.5 2 0.5
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KF33BDT-TR DPAK Tape And Reel 3.3 2 0.5
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0.368 1000
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ECCN (US):

EAR99

Country of Origin:

CHINA

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KF33BD-TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.32*

Distributor availability ofKF33BD-TR

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DIGIKEY WORLDWIDE 9595 1 Order Now
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AVNET AMERICA 2500 0 Order Now
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ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 12662 1 Order Now
Farnell Element14 EUROPE 13777 1 Order Now
ANGLIA Live EUROPE 9707 1 Order Now

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DIGIKEY

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9595

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1

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WORLDWIDE Order Now

RS COMPONENTS

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10295

Min.Order

5

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2500

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9707

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Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Marketing Status

Active

Unit Price (US$)

0.32

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

KF80BDT-TR

Package

DPAK

Packing Type

Tape And Reel

Unit Price (US$)

0.343*

Distributor availability ofKF80BDT-TR

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DIGIKEY WORLDWIDE 1483 1 Order Now
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DIGIKEY

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1483

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RS COMPONENTS

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230

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2500

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代理商库存报告日期: 2019-05-25

Output Voltage (V) (nom)

8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Marketing Status

Active

Unit Price (US$)

0.343

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

KF50BDT-TR

Package

DPAK

Packing Type

Tape And Reel

Unit Price (US$)

0.343*

Distributor availability ofKF50BDT-TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 18726 1 Order Now
RS COMPONENTS EUROPE 2735 5 Order Now
Newark Element14 AMERICA 100 0 Order Now
MOUSER WORLDWIDE 6343 1 Order Now
Farnell Element14 EUROPE 82 1 Order Now

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代理商名称

DIGIKEY

库存

18726

Min.Order

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地区

WORLDWIDE Order Now

RS COMPONENTS

库存

2735

Min.Order

5

地区

EUROPE Order Now

Newark Element14

库存

100

Min.Order

0

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AMERICA Order Now

MOUSER

库存

6343

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1

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库存

82

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代理商库存报告日期: 2019-05-25

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Marketing Status

Active

Unit Price (US$)

0.343

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

KF50BD-TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.32*

Distributor availability ofKF50BD-TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2418 1 Order Now
RS COMPONENTS EUROPE 11355 5 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 6007 1 Order Now
Farnell Element14 EUROPE 1858 1 Order Now
ANGLIA Live EUROPE 10191 1 Order Now

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DIGIKEY

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2418

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库存

11355

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5

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库存

2500

Min.Order

0

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库存

6007

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Farnell Element14

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1858

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10191

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代理商库存报告日期: 2019-05-25

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Marketing Status

Active

Unit Price (US$)

0.32

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

KF25BD-TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.32*

Distributor availability ofKF25BD-TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2287 1 Order Now
RS COMPONENTS EUROPE 2612 1 Order Now
ARROW EUROPE 2500 0 Order Now
ARROW AMERICA 671 1 Order Now
MOUSER WORLDWIDE 4529 1 Order Now
Farnell Element14 EUROPE 4194 1 Order Now
RUTRONIK EUROPE 5000 2500 Order Now

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2287

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1

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RS COMPONENTS

库存

2612

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1

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库存

2500

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0

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ARROW

库存

671

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1

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库存

4529

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Farnell Element14

库存

4194

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库存

5000

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2500

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代理商库存报告日期: 2019-05-25

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Marketing Status

Active

Unit Price (US$)

0.32

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

KF25BDT-TR

Package

DPAK

Packing Type

Tape And Reel

Unit Price (US$)

0.368*

Distributor availability ofKF25BDT-TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1290 1 Order Now
MOUSER WORLDWIDE 2400 1 Order Now
Farnell Element14 EUROPE 1914 1 Order Now

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代理商名称

DIGIKEY

库存

1290

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

2400

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1914

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-05-24

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Marketing Status

Active

Unit Price (US$)

0.368

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

KF33BDT-TR

Package

DPAK

Packing Type

Tape And Reel

Unit Price (US$)

0.368*

Distributor availability ofKF33BDT-TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 15005 1 Order Now
RS COMPONENTS EUROPE 13950 5 Order Now
AVNET AMERICA 2146 0 Order Now
FUTURE WORLDWIDE 5175 1 Order Now
ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 19090 1 Order Now
RUTRONIK EUROPE 2500 2500 Order Now

代理商库存报告日期: 2019-05-25

代理商名称

DIGIKEY

库存

15005

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

13950

Min.Order

5

地区

EUROPE Order Now

AVNET

库存

2146

Min.Order

0

地区

AMERICA Order Now

FUTURE

库存

5175

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

2500

Min.Order

2500

地区

AMERICA Order Now

MOUSER

库存

19090

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

2500

Min.Order

2500

地区

EUROPE Order Now

代理商库存报告日期: 2019-05-25

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Marketing Status

Active

Unit Price (US$)

0.368

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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      Very low drop voltage regulators with inhibit
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型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
KF25BD-TR
Active
SO-8 工业 Ecopack2
KF25BDT-TR
Active
DPAK 工业 Ecopack2
KF33BD-TR
Active
SO-8 工业 Ecopack2
KF33BDT-TR
Active
DPAK 工业 Ecopack2
KF50BD-TR
Active
SO-8 工业 Ecopack2
KF50BDT-TR
Active
DPAK 工业 Ecopack2
KF80BDT-TR
Active
DPAK 工业 Ecopack2

KF25BD-TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

KF25BDT-TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

KF33BD-TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

KF33BDT-TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

KF50BD-TR

Package:

SO-8

Material Declaration**:

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

KF50BDT-TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

KF80BDT-TR

Package:

DPAK

Material Declaration**:

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.