WMSIC Electronic Components

XINLUDA XH2576-3.3 XH2576

ModelXH2576-3.3
PackageTO-263-5
BrandXINLUDA
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
XINLUDA XH2576-3.3
Type
XINLUDA
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
XINLUDA
Electronic Component
XH2576-3.3
Electronic Component
1
Package
TO-263-5
Electronic Component
DC-DC Power Supply IC
Electronic Component
2.38g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0265849650
Operating Temperature
40℃~+125℃@(TJ)
Operating Voltage
6V~40V
Switching Frequency
52kHz
Electronic Component
Electronic Component
Output Voltage
3.3V

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

XH2576-3.3 降压型DC-DC转换器产品概述

XH2576-3.3是信路达(XINLUDA)推出的一款非同步降压式DC-DC转换器,专为中等功率(3A)、宽电压输入场景设计,核心功能是将6V~40V的直流输入稳定转换为固定3.3V输出,适配工业级、车载级等宽温应用需求。

一、产品定位与核心功能

XH2576-3.3属于传统降压拓扑(Buck)架构,区别于同步整流方案,采用续流二极管实现电流续流,结构简单、可靠性高,无需额外控制逻辑。其核心定位是宽压输入、固定输出的中等功率电源模块,可替代部分传统线性稳压器(如LM1117-3.3)——在输入电压高于输出电压较多时(如24V转3.3V),效率显著提升,同时避免线性稳压器的严重发热问题,适合长期通电的工业/车载设备。

二、关键电气参数详解

1. 输入输出特性

  • 输入电压范围:6V~40V(覆盖12V/24V车载电源、24V工业PLC电源,甚至40V高压场景,无需额外降压预处理);
  • 输出特性:固定3.3V输出,持续输出电流3A(满足多数3.3V负载的功率需求,如微控制器、无线模块、传感器阵列等);
  • 静态电流(Iq):5mA(待机状态下的输入电流,适合对待机功耗要求不苛刻的设备,如长期通电的工业控制柜)。

2. 开关与效率特性

  • 开关频率:52kHz(属于低频段,电磁干扰(EMI)辐射相对较小,电感选型难度低,无需复杂的EMI滤波设计);
  • 效率表现:非同步整流方案,典型负载(1A2A)下效率约85%90%,高负载(3A)下效率略降(约80%~85%),需配合散热设计保障稳定性。

3. 温度与可靠性

  • 工作结温范围:-40℃~+125℃(工业级宽温,可适应低温环境(如北方户外设备)和高温环境(如车载仪表盘、工业控制柜内部),无需额外温度补偿)。

三、封装与物理特性

XH2576-3.3采用TO-263-5贴片封装,引脚定义符合行业标准(通常为:输入Vin、输出Vout、地GND、反馈FB、使能EN),尺寸紧凑(约7.6mm×6.4mm),适合PCB高密度布局。封装自带散热焊盘,可通过PCB铜箔(建议≥10cm²)或小型散热片增强散热能力,满足3A输出时的热管理需求。

四、典型应用场景

XH2576-3.3的宽压、宽温特性使其适配多类场景:

  1. 工业控制:PLC模块、传感器节点、工业机器人电源;
  2. 车载电子:行车记录仪、车载音响、车载显示屏电源(适配12V/24V车载电网);
  3. 通信设备:小型基站、路由器、交换机的3.3V供电模块;
  4. 户外设备:太阳能供电的监控设备、便携式仪器(适配6V~24V太阳能电池输入)。

五、设计注意事项

  1. 散热设计:3A持续输出时,器件结温易升高,需在PCB上增加散热铜箔或安装小型散热片(建议结温不超过125℃);
  2. 电感选型:需匹配52kHz开关频率,建议选用100uH~220uH、电流≥3A的屏蔽功率电感(减少EMI辐射);
  3. 输出电容:建议使用低ESR的陶瓷电容(10uF~22uF)或电解电容(47uF),降低输出纹波(典型纹波≤50mV);
  4. 反馈与使能:FB引脚需直接接输出端(保证电压稳定),EN引脚可接外部控制(如微控制器)实现电源通断,无需控制时可直接接Vin。

XH2576-3.3以其宽压输入、高可靠性和紧凑封装,成为工业、车载等场景中3.3V/3A电源设计的实用选择,适合对成本敏感且无需同步整流极致效率的应用需求。

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