a8447 Allegro MicroSystems, Inc., a8447 Datasheet - Page 3
a8447
Manufacturer Part Number
a8447
Description
A8447 High-voltage Step-down Regulator
Manufacturer
Allegro MicroSystems, Inc.
Datasheet
1.A8447.pdf
(9 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
a8447SLJTR-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
Part Number:
a8447ST
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
A8447
μC
BOOT
TSET
GND
ENB
VBB UVLO
TSD
V
IN
Switch
Disable
Functional Block Diagram
I_Peak
Ramp Generation
Boot Charge
+
Switch PWM Control
Soft Start
COMP
–
I_Demand
High Voltage Step Down Regulator
–
Clamp
Error
–
0.8 V
Bias Supply
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
VIN
VBIAS
LX
FB
D1
CBYP
VBIAS is connected to VOUT
when V
3.3 and 5 V
L1
OUT
target is between
ESR
COUT
VOUT
3
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