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STEVAL-ISA198V1 датащи(PDF) 1 Page - STMicroelectronics

номер детали STEVAL-ISA198V1
подробное описание детали  2 A step down DC - DC switching regulator (VIN = 4.5 V to 60 V) based on the L7987L
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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November 2016
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For further information contact your local STMicroelectronics sales
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STEVAL-ISA198V1
2 A step down DC - DC switching regulator (VIN = 4.5 V to 60 V)
based on the L7987L
Data brief
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
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.


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