A8508 View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
A8508
Allegro MicroSystems
'A8508' PDF : 28 Pages View PDF
A8508
Wide Input Voltage Range, High Efficiency
8-Channel Fault Tolerant LED Driver
RVDR
CDR
CDD
RFSET
RISET
VIN
CIN
VC
R1
CP1
L1
D1
VOUT
Q1
COUT
VIN GATE
FAULT
RSENSE
SENP SENN
PWM
EN
VDR
VDD
MODE
FSET/SYNC
ISET
COMP
A8508
(master)
PAD
AGND PGND
ROVP
OVP
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
VIN
VOUT
RVDR
CDR
CDD
RFSET
RISET
CP2
RGATE
50 kΩ
ROVP
VIN
FAULT
GATE
SENP SENN
PWM
EN
VDR
VDD
MODE
FSET/SYNC
ISET
COMP
A8508
(one slave)
PAD
AGND PGND
OVP
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
Application C. Parallel operation of two A8508s; overvoltage protection on master must be
set higher than the OVP on the slave
VIN
VC
R1
RVDR
CDR
CDD
RFSET
RISET
(Optional)
CIN L1
D1
VOUT
RSC
Q2
RADJ
Q1
COUT
RSENSE
ROVP
VIN VSEN HGATE GATE SENP SENN OVP
FAULT
PWM
EN
VDR
VDD
A8508
LED1
LED2
LED3
LED4
FSET/SYNC
PAD
ISET
COMP
LED5
LED6
LED7
LED8
CP
MODE
AGND PGND
Application D. Input disconnect switch configuration for fault protection. Option available
only in QFN package. Contact factory for details.
Allegro MicroSystems, Inc.
26
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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