A8509 View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
A8509
Allegro MicroSystems
'A8509' PDF : 28 Pages View PDF
A8509
Wide Input Voltage Range, High Efficiency
4-Channel Fault Tolerant LED Driver
Typical Applications
VIN
VDR
R1
10 kΩ
Q2
1 kΩ
1 kΩ
CDR
CDD
RFSET
RISET
CIN
L1
D1
(Optional) Q1
Q3
COUT
RSENSE
VIN
GATE SENP SENN
FAULT
PWM
EN
VDR
VDD
FSET/SYNC
ISET
COMP
A8509
PAD
VOUT
ROVP
OVP
LED1
LED2
LED3
LED4
CP
MODE
AGND PGND
Application A. Typical schematic for boost application with disconnect switch application
CDR
CDD
RFSET
RISET
VIN
VC
R2
10 kΩ
L2
L1
CF
D1
CIN
COUT
R1
VIN
FAULT
RSENSE
GATE SENP SENN
PWM
EN
VDR
VDD
FSET/SYNC
ISET
COMP
A8509
PAD
VOUT
ROVP
OVP
LED1
LED2
LED3
LED4
CP
MODE
AGND PGND
Application B. Typical application showing SEPIC configuration
Allegro MicroSystems, Inc.
25
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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