WMSIC Electronic Components

On-Bright OB3353ACPA

ModelOB3353ACPA
PackageSOP-8
BrandOn-Bright
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
On-Bright OB3353ACPA
Type
ON-BRIGHT
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ON-BRIGHT
Electronic Component
OB3353ACPA
Electronic Component
1
Package
SOP-8
Type
DC-DC
Electronic Component
LEDDriver
Electronic Component
PWM; Analog
Electronic Component
0.185g
Electronic Component
1
Channel Count
1
Features
(OVP); LED; Built-in; (OTP); (SCP)
Electronic Component
BM0264780232
Operating Temperature
40℃~+150℃
Switching Frequency
120kHz
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

OB3353ACPA 产品概述

一、产品简介

OB3353ACPA 为昂宝(On-Bright)推出的一款升压型 DC-DC 控制器,面向车载及工业领域的高可靠性 LED 驱动与升压供电应用。器件采用 SOP-8 封装、单通道控制,适配 9V–30V 输入范围,可与外置功率开关管配合实现高效率电源转换与调光控制。

二、核心性能与规格

  • 类型:DC-DC 升压控制器(Boost)
  • 输入电压范围:9V ~ 30V
  • 开关频率:典型 120kHz
  • 通道数:1 通道
  • 封装:SOP-8(外置功率开关管)
  • 工作温度:-40℃ ~ +150℃

三、功能特性

  • 支持 PWM 调光与模拟调光接口,便于实现亮度调节与系统兼容
  • 完善保护机制:过压保护(OVP)、LED 开路保护、过温保护(OTP)、短路保护(SCP)
  • 内置软启动,抑制启动冲击电流与输出过冲

四、典型应用场景

  • 汽车照明(近光/远光、日行灯、辅助照明)
  • 工业照明与指示灯驱动
  • 需要从 12V/24V 总线升压到更高电压的 LED 驱动与电源模块

五、设计要点与外设选配

  • 外置功率 MOSFET:选择耐压高于系统最大电压的 MOSFET,低 Rds(on) 与低栅极电荷有利于降低开关损耗与发热
  • 电感与续流二极管:按 120kHz 开关频率与目标电流纹波选择电感值与高效快速二极管或肖特基管,确保峰值电流与温升满足要求
  • 输出/输入电容:选择低 ESR 电解/固态电容以降低纹波与提升稳定性
  • 电流检测与恒流控制:若用于 LED 恒流驱动,需外接电流检测电阻与相应反馈回路实现精确电流限制
  • 调光实现:PWM 调光可直接由 MCU 驱动 PWM 引脚或外部开关实现;模拟调光用于连续亮度控制与与其它模拟电路兼容

六、热管理与可靠性

  • SOP-8 封装需注意 PCB 散热:大面积铜箔、热过孔与器件附近布局功率器件,降低结温以延长寿命
  • 在高温环境(接近 150℃)下,应保证器件周围器件与 PCB 设计满足热降额要求

七、封装与应用注意

  • 器件为控制器类产品,开关管需外置,布局上应优先考虑开关回路的最小回路面积以抑制 EMI
  • 推荐在设计初期进行仿真与样机验证,验证保护动作门限、软启动行为与调光响应,确保系统在各种工况下稳定可靠

以上为 OB3353ACPA 的产品概述与设计参考,供电源与 LED 驱动方案评估和工程实现使用。若需原理图示例、典型应用电路或更详尽的参数(如引脚定义、电流限值与门限电压),建议参考厂商数据手册或联系昂宝技术支持获取完整资料。

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