L5987

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3 A step-down switching regulator

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Product overview

Description

The L5987 is a step-down switching regulator with a 3.5 A (minimum) current limited embedded Power MOSFET, so it is able to deliver an up to 3 A current to the load depending on the application conditions. The input voltage can range from 2.9 V to 18 V, while the output voltage can be set starting from 0.6 V to VIN. Having a minimum input voltage of 2.9 V, the device is suitable also for a 3.3 V bus.
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 VFQFPN8 and the HSOP packages with an exposed pad allow reducing the RthJAdown to 60 °C/W and 40 °C/W respectively.
  • All features

    • 3 A DC output current
    • 2.9 V to 18 V input voltage
    • Output voltage adjustable from 0.6 V
    • 250 kHz switching frequency, programmable up to 1 MHz
    • Internal soft-start and inhibit
    • Low dropout operation: 100% duty cycle
    • Voltage feedforward
    • Zero load current operation
    • Overcurrent and thermal protection
    • VFQFPN 3 x 3 -8L and HSOP8 package

Circuit Diagram

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Input Specification
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V
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Output
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this option is required
Output Power: 0

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L5987

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L5987A
Active
PowerSO-8 Industrial Ecopack2
L5987ATR
Active
PowerSO-8 Industrial Ecopack2
L5987TR
Active
QFN-8L P 0.5 mm Industrial Ecopack2

L5987A

Package:

PowerSO-8

Material Declaration**:

Marketing Status

Active

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L5987ATR

Package:

PowerSO-8

Material Declaration**:

Marketing Status

Active

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L5987TR

Package:

QFN-8L P 0.5 mm

Material Declaration**:

Marketing Status

Active

Package

QFN-8L P 0.5 mm

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.

Sample & Buy

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Part Number
Order from distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L5987TR Available at 1 distributors

Distributor availability ofL5987TR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 5961 1 Buy from Distributor

Distributor reported inventory date: 2022-07-12

Distributor Name

MOUSER

Stock

5961

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-07-12

Active
EAR99 NEC Tape and Reel QFN-8L P 0.5 mm -40 150 PHILIPPINES
L5987ATR Available at 1 distributors

Distributor availability ofL5987ATR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2 1 Buy from Distributor

Distributor reported inventory date: 2022-07-12

Distributor Name

DIGIKEY

Stock

2

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-07-12

Active
EAR99 NEC Tape and Reel PowerSO-8 -40 150 PHILIPPINES
L5987A No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tube PowerSO-8 -40 150 PHILIPPINES

L5987TR Active

Package:
QFN-8L P 0.5 mm
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

L5987TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

150

Country of Origin:

PHILIPPINES

Distributor availability ofL5987TR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 5961 1 Buy from Distributor

Distributor reported inventory date: 2022-07-12

Distributor Name

MOUSER

Stock

5961

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-07-12

L5987ATR Active

Package:
PowerSO-8
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

L5987ATR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

150

Country of Origin:

PHILIPPINES

Distributor availability ofL5987ATR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2 1 Buy from Distributor

Distributor reported inventory date: 2022-07-12

Distributor Name

DIGIKEY

Stock

2

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-07-12

L5987A Active

Package:
PowerSO-8
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

L5987A

ECCN (EU):

NEC

Packing Type:

Tube

Operating Temperature (°C)

Min:

-40

Max:

150

Country of Origin:

PHILIPPINES

No availability of distributors reported, please contact our sales office
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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors