STEVAL-ISA198V1

Active
Design Win

2 A step down DC - DC switching regulator (VIN = 4.5 V to 60 V) based on the L7987L

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Product overview

Description

The STEVAL-ISA198V1 product evaluation board is a step-down switching power supply based on the L7987L regulator in an HTSSOP16 package. The output voltage can be set starting from 0.8 V. Low drop-out operation, due to the advanced integrated switch management, can be achieved.

The L7987L is a 61 V, 2 A step-down asynchronous switching regulator with embedded power MOSFET capable of delivering up to 2 A of current, depending on the application conditions.

The embedded switch-over feature on the VBIAS pin and the light load management (pulse skipping) help maximize power conversion efficiency across the entire load range.

The soft-start, current limit threshold and switching frequency are adjustable for application optimization.

The device includes an internal 250 kHz oscillator that can be externally adjusted up to 1.5 MHz; two L7987L regulators can be synchronized in a 180° out-of-phase configuration for reduced total input RMS current.

  • All features

    • 4.5 V to 60 V input voltage
    • Step-down (buck) conversion
    • 5 V output voltage (VIN > 6 V)
    • Up to 2 A DC output current
    • 500 kHz switching frequency
    • 5 ms programmed soft-start
    • Compliant with ceramic output capacitors
    • 180° out of phase synchronization available
    • Auto recovery overcurrent and thermal protection
    • RoHS compliant

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA198V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA198V1

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

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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STEVAL-ISA198V1 Available at distributors

Distributor availability of STEVAL-ISA198V1

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L7987L
Active
ST EAR99 NEC ITALY -

STEVAL-ISA198V1 Active

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

Part Number:

STEVAL-ISA198V1

Core Product:

L7987L

Supplier:

ST

ECCN (EU):

NEC

Country of Origin:

ITALY

Board production status:

-

Distributor Name

Distributor reported inventory date:

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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