A4402 ALLEGRO [Allegro MicroSystems], A4402 Datasheet - Page 3
A4402
Manufacturer Part Number
A4402
Description
Constant On-Time Buck Converter with Integrated Linear Regulator
Manufacturer
ALLEGRO [Allegro MicroSystems]
Datasheet
1.A4402.pdf
(15 pages)
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Manufacturer
Quantity
Price
Part Number:
A4402ELPTR-T
Manufacturer:
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20 000
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Manufacturer:
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A4402
4.7 kΩ
20
V
kΩ
O2
C
0.15 μF
0.33
C
TSET
POR
μF
NPOR
TSET
POR
ENB
WDI
WDI
ENB
Regulator
Internal
Ramp Generator
Watchdog Timer
V
Soft Start
FB2
FAULT
VIN1
Functional Block Diagram
V
V
REG
REF
V
Disable
Switch
REF
TSD
Switch PWM
Control
V
Constant On-Time Buck Converter
V
REF
REG
Charge
Boot
with Integrated Linear Regulator
VIN1
ISEN
GND
GND
VIN2
FB1
VO2
FB2
LX
R4
5.62
10
R3
kΩ
kΩ
V
SW
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
R
0.01
SENSE
0.1
1
μF
μF
33 μH
μF
L1
V
3.3 V
300 mA
31.6
R2
9.76
R
LIN
1
750 kΩ
R
ton
kΩ
kΩ
10
4.7
μF
μF
V
5 V
SW
V
BAT
3
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