2A step-down switching regulator

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  • The L7985/A is a step-down switching regulator with a 2.5 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 2 A current to the load depending on the application conditions. The input voltage can range from 4.5 V to 38 V, while the output voltage can be set starting from 0.6 V to VIN. Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz. The DFN and the HSOP packages with exposed pad allow the reduction of RthJAdown to 60 °C/W and 40 °C/W respectively.

    主要特性

    • 2 A DC output current
    • 4.5 V to 38 V input voltage
    • Output voltage adjustable from 0.6 V
    • 250 kHz switching frequency, programmable up to 1 MHz
    • Internal soft-start and enable
    • Low dropout operation: 100% duty cycle
    • Voltage feed-forward
    • Zero load current operation
    • Overcurrent and thermal protection
    • VFDFPN 3x3 - 10L and HSOP8 package

样片和购买

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L7985A PowerSO-8 Tube
Active
0.791 1000 EAR99 CHINA Check Availability

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1800

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100

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代理商库存报告日期: 2019-06-17

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L7985ATR PowerSO-8 Tape And Reel
Active
0.791 1000 EAR99 CHINA Check Availability

Distributor availability ofL7985ATR

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DIGIKEY WORLDWIDE 11459 1 Order Now
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L7985TR DFN10 3X3 Tape And Reel
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0.751 1000 EAR99 PHILIPPINES Check Availability

Distributor availability ofL7985TR

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DIGIKEY WORLDWIDE 3764 1 Order Now
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DIGIKEY

库存

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1

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3003

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代理商库存报告日期: 2019-06-17

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L7985A

Package

PowerSO-8

Packing Type

Tube

Unit Price (US$)

0.791*

Distributor availability ofL7985A

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 938 1 Order Now
RS COMPONENTS EUROPE 3060 5 Order Now
ARROW EUROPE 2605 0 Order Now
ARROW AMERICA 1 2000 Order Now
MOUSER WORLDWIDE 2039 1 Order Now
RUTRONIK EUROPE 1800 100 Order Now

代理商库存报告日期: 2019-06-17

代理商名称

DIGIKEY

库存

938

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

3060

Min.Order

5

地区

EUROPE Order Now

ARROW

库存

2605

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

1

Min.Order

2000

地区

AMERICA Order Now

MOUSER

库存

2039

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

1800

Min.Order

100

地区

EUROPE Order Now

代理商库存报告日期: 2019-06-17

Marketing Status

Active

Unit Price (US$)

0.791

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L7985ATR

Package

PowerSO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.791*

Distributor availability ofL7985ATR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 11459 1 Order Now
ARROW AMERICA 3 1 Order Now
MOUSER WORLDWIDE 3005 1 Order Now

代理商库存报告日期: 2019-06-17

代理商名称

DIGIKEY

库存

11459

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

3

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

3005

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-06-17

Marketing Status

Active

Unit Price (US$)

0.791

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L7985TR

Package

DFN10 3X3

Packing Type

Tape And Reel

Unit Price (US$)

0.751*

Distributor availability ofL7985TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 3764 1 Order Now
MOUSER WORLDWIDE 3003 1 Order Now

代理商库存报告日期: 2019-06-17

代理商名称

DIGIKEY

库存

3764

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

3003

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-06-17

Marketing Status

Active

Unit Price (US$)

0.751

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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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技术文档

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      DS8733
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      X798X Pspice model
      2.07 MB
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      X798X Pspice model

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型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L7985A
Active
PowerSO-8 工业 Ecopack2
L7985ATR
Active
PowerSO-8 工业 Ecopack2
L7985TR
Active
DFN10 3X3 工业 Ecopack2

L7985A

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L7985ATR

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L7985TR

Package:

DFN10 3X3

Material Declaration**:

Marketing Status

Active

Package

DFN10 3X3

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.

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Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

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A This option is required and must be a number.