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A7987 Datasheet(PDF) 3 Page - STMicroelectronics

Part # A7987
Description  61 V, 3 A asynchronous step-down switching regulator with adjustable current limitation for automotive
PDF  36 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A7987 Datasheet(HTML) 3 Page - STMicroelectronics

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2
Block diagram
Figure 2. Block diagram
VIN
OUT
GND
FB
BOOT
PGOOD
EN
SS
LOGIC
and
CONTROL
UVLO
VREG
ENABLE
REF and BIAS
SOFT
START
E/A
TEMP
MONITOR
HS
DRIVER
LS
DRIVER
CURRENT
SENSING
PG
COMP
PWM
COMP
VCC
VBIAS
BOOT
CHARGE
COMP
FSW
SYNCH
ILIM
ISS
+
-
VRAMP
ILIM
FUNCTION
FB
FB
ISNS
OSCILLATOR
& RAMP
VRAMP
MASTER
SLAVE
+
-
+
-
EN
EN
A7987
Block diagram
DS12928 - Rev 3
page 3/36



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