Details, datasheet, quote on part number: STEVAL-ISA198V1
CategoryEmbedded Solutions => Engineering Tools => Power Management IC Development Tools => 8826604
TitlePower Management IC Development Tools 2 A step down DC - DC switching regulator (VIN = 4.5 V to 60 V) based on the L7987L

STMicroelectronics STEVAL-ISA198V1 Evaluation Board is a step-down switching power supply based on the L7987L regulator with a 4.5-60V input voltage. The output voltage can be set starting from 0.8V. Low drop-out operation can be achieved due to the advanced integrated switch management. The L7987L is a 61V, 2A step-down asynchronous switching regulator with embedded power MOSFET capable of delivering up to 2A of current, depending on the application conditions.

CompanyST Microelectronics, Inc.
DatasheetDownload STEVAL-ISA198V1 datasheet
Product CategoryPower Management IC Development Tools
ProductEvaluation Boards
TypeVoltage Regulators - Switching Regulators
Tool Is For Evaluation OfL7987L
Input Voltage4.5 V to 60 V
Output Voltage5 V
Output Current2 A
STEVAL-ISA198V1 photo


Features, Applications
2 A step down - DC switching regulator (VIN 60 V) based on the L7987L

The STEVAL-ISA198V1 product evaluation board is a step-down switching power supply based on the L7987L regulator 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 2 A step-down asynchronous switching regulator with embedded power MOSFET capable of delivering 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.


60 V input voltage Step-down (buck) conversion 5 V output voltage (VIN 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

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 to 1.5 MHz; two L7987L regulators can be synchronized a 180° out-of-phase configuration for reduced total input RMS current.

For further information contact your local STMicroelectronics sales office

Table 1: Document revision history Date 11-Nov-2016 Version 1 Initial release. Changes


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