A8510 Просмотр технического описания (PDF) - Allegro MicroSystems
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A8510 Datasheet PDF : 33 Pages
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A8510
Wide Input Voltage Range, High Efficiency
Fault Tolerant LED Driver
Functional Block Diagram
VIN
FSET/SYNC
COMP
VSENSE
VGATE
EN/PWM
APWM
ISET
VDD
Regulator
UVLO
Internal VCC
Oscillator
Internal VCC
1.235 V
Ref
VREF
AGND
∑
+
–
Driver
Circuit
SW SW
Diode
Open
+ Sense
–
Internal
Soft Start ISS
+
–
Input Current
Sense Amplifier
IADJ
Current
Sense
Fault
PMOS
Driver
GOFF
Enable
100 kΩ
PWM
VREF
Internal VCC
ISET
ISS
LED
Driver
PGND
Thermal
Shutdown
OVP
Sense
VREF
Open/Short
LED Detect
AGND
OVP
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
FAULT
PGND 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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