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
Functional Block Diagram
VDD VDR
GATE SENP SENN
Regulator
VIN
UVLO
1.25 V
Ref
VREF
Internal VDD
AGND
FSET/SYNC
COMP
MODE
EN
PWM
ISET
Oscillator
VREF2 +
FB –
∑
–
+
Driver
Circuit
Fault
Internal
Soft Start
ISS
Current
Sense
70 kΩ
100 kΩ
100 kΩ
Enable
PWM
Fault
VREF1
ISS
ISET
FB
AGND
LED
Driver
Thermal
Shutdown
OVP/UVP
Sense
50 μA
VREF
Open/Short
LED Detect
OVP
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
FAULT
PAD
ET and LP
Packages Only
PGND
AGND
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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