Datasheet > A8502

A8502

更新时间： 2024-02-19 00:05:03

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
35页	1247K
描述
Wide Input Voltage Range, High Efficiency

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中文翻译

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技术参数
数据手册

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A8502 技术参数

生命周期：	Obsolete	Reach Compliance Code：	unknown
风险等级：	5.82	特性阻抗：	50 Ω
最大输入功率 (CW)：	46.99 dBm	最大工作频率：	4000 MHz
最小工作频率：		最高工作温度：	125 °C
最低工作温度：	-55 °C	射频/微波设备类型：	FIXED ATTENUATOR
最大电压驻波比：	1.35	Base Number Matches：	1

A8502 数据手册

Wide Input Voltage Range, High Efficiency

Fault Tolerant LED Driver

A8502

Description (continued)

TheA8502 is provided in a 16-pin TSSOPpackage (suffix LP) with

an exposed pad for enhanced thermal dissipation. It is lead (Pb) free,

with 100% matte tin lead frame plating.

Selection Guide

Part Number

Packing*

A8502KLPTR-T

4000 pieces per 13-in. reel

*Contact Allegro for additional packing options

Absolute Maximum Ratings*

Characteristic

Symbol

Notes

Rating

Unit

LEDx Pins

OVP Pin

–0.3 to 55

–0.3 to 60

VSENSE and GATE pins should not exceed V_IN

by more than 0.4 V

VIN, VSENSE, GATE Pins

SW Pin

–0.3 to 40

Continuous

t < 50 ns

–0.6 to 62

–1.0

¯¯¯¯¯¯¯¯¯

FAULT Pin

-0.3 to 40

–0.3 to 5.5

–0.3 to 7

–40 to 125

150

ISET, FSET, APWM, COMP Pins

All Other Pins

Operating Ambient Temperature

Maximum Junction Temperature

Storage Temperature

T_A

T_J(max)

T_stg

Range K

ºC

–55 to 150

*Stresses beyond those listed in this table may cause permanent damage to the device. The Absolute Maximum ratings are

stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the Electrical

Characteristics table is not implied. Exposure to Absolute Maximum-rated conditions for extended periods may affect device reliability.

Table of Contents

LED short detect

Specifications

Overvoltage protection

Boost switch overcurrent protection

Input overcurrent protection and

disconnect switch

Setting the current sense resistor

Input UVLO

VDD

Shutdown

Fault protection during operation

Pin-out Diagram and Terminal List

Characteristic Performance

Functional Description

Enabling the IC

Powering up: LED pin short-to-ground check

Soft start function

Frequency selection

Sync

LED current setting and LED dimming

PWM dimming

Application Information

Design Example for Boost Configuration

Design Example for SEPIC Configuration

Package Outline Drawing

APWM pin

Analog dimming

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

123 4 5 6 7...35

中文翻译

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与A8502相关器件

型号	品牌	获取价格	描述	数据表
A8503	ALLEGRO	获取价格	High Efficiency 6-Channel, 2 MHz, WLED/RGB Driver
A8503GECTR-T	ALLEGRO	获取价格	LED Driver, 72-Segment, QFN-26
A8504	ALLEGRO	获取价格	WLED/RGB Backlight Driver for Medium Size LCDs
A8504EECTR-T	ALLEGRO	获取价格	WLED/RGB Backlight Driver for Medium Size LCDs
A8507	ALLEGRO	获取价格	LED Backlight Driver for LCD Monitors and Televisions
A8507ELBTR-T	ALLEGRO	获取价格	LED Driver, 54-Segment, PDSO24, LEAD FREE, MS-013AD, SOIC-24
A8507ELPTR-T	ALLEGRO	获取价格	LED Driver, 54-Segment, PDSO24, LEAD FREE, MO-153ADT, TSSOP-24
A8508	ALLEGRO	获取价格	Wide Input Voltage Range, High Efficiency
A8508GLPTR-T	ALLEGRO	获取价格	LED Driver, 8-Segment, PDSO24, TSSOP-24
A8509	ALLEGRO	获取价格	Wide Input Voltage Range, High Efficiency

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