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| A4402_12 Datasheet, PDF (14/17 Pages) Allegro MicroSystems – The A4402 is a dual-output regulator, combining in a single package a constant on-time buck regulator and a linear regulator (LDO)—each with adjustable output voltages. | |||
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A4402
Constant On-Time Buck Converter
With Integrated Linear Regulator
PCB Layout Diagram
C5
GND
R5
R7
U1
R6
VIN2
GND
VLIN
VSW
C6
C1
C8
C2
C3
R1
C4
R4
GND
GND
R2
D1
R3
VIN1
GND
C7
L1
Star Ground
C5
R7 R6
VLIN
C6
R4
VSW
R5
VIN1
TON
GND
FB2
VIN2
VO2
WDI
TSET
NPOR
ENB
A4402 VIN1
GND
PAD
LX
BOOT
ISEN
POR
FB1
C3
D1
R2
C1 C8
C2
R1 C7
L1
C4
R3
A4402
PCB
Thermal Vias
Solder
Trace (2 oz.)
Signal (1 oz.)
Ground (1 oz.)
Thermal (2 oz.)
Allegro MicroSystems, Inc.
14
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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