A8510 Просмотр технического описания (PDF) - Allegro MicroSystems

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A8510

Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver

Allegro MicroSystems 

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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