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A8498 Fiches technique(PDF) 3 Page - Allegro MicroSystems

No de pièce A8498
Description  Wide Input Voltage 3.0 A Step Down Regulator
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Fabricant  ALLEGRO [Allegro MicroSystems]
Site Internet  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A8498 Fiches technique(HTML) 3 Page - Allegro MicroSystems

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Wide Input Voltage 3.0 A Step Down Regulator
A8498
3
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Functional Block Diagram
+
Switch PWM Control
μC
Soft Start
Ramp Generation
COMP
0.8 V
Boot Charge
VBIAS is connected to VOUT
when VOUT target is between
3.3 and 5 V
D1
L1
VIN
COUT
VOUT
ESR
VBB UVLO
TSD
Switch
Disable
Bias Supply
I_Peak
I_Demand
Clamp
Error
BOOT
ENB
TSET
GND
VIN
LX
FB
VBIAS


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