WMSIC Electronic Components

GATEMODE HM8342Y

ModelHM8342Y
PackageSOT-23-6
BrandGATEMODE
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
GATEMODE HM8342Y
Type
GATEMODE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
GATEMODE
Electronic Component
HM8342Y
Electronic Component
1
Package
SOT-23-6
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.048g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0264545361
Operating Temperature
40℃~+125℃
Operating Voltage
4.75V~40V
Switching Frequency
500kHz
Electronic Component
Electronic Component
Output Voltage
800mV~24V

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

HM8342Y — 40V输入、2A同步降压DC-DC芯片概述

一、核心特点

HM8342Y 是捷茂微(GATEMODE)推出的一款降压型同步整流DC-DC转换器,针对宽输入电压系统设计,主要特点包括:

  • 输入电压范围:4.75V ~ 40V,适配常见12V/24V及宽压供电场景;
  • 输出电压可调:VREF = 0.8V,输出可在0.8V ~ 24V间通过外部分压设置;
  • 最大输出电流:2A 连续输出;
  • 开关频率:固定500kHz;同步整流、内置功率开关;
  • 工作温度:-40℃ ~ +125℃;封装:SOT-23-6。

二、功能与保护

HM8342Y 集成多项实用控制与保护功能,提升系统可靠性与效率:

  • 轻载高效PFM模式:负载轻时进入脉冲调制以降低静态功耗并提高效率;
  • 逐波限流(Cycle-by-cycle current limit):在瞬态或过载时快速限制电流,保护器件及外部负载;
  • 打嗝限流(Hiccup):持续短路或严重过流时进入打嗝模式,降低平均功耗并自动恢复;
  • 过压保护、短路保护、过温保护;内部软启动可限制启动浪涌并减小输入冲击。

三、电气特性(概要)

  • 功能类型:降压式(Buck);同步整流;内置开关管;
  • 输出类型:可调;支持高效率轻载模式;
  • 频率与性能:500kHz 固定开关频率,利于采用小型磁性元件与紧凑布局;
  • 封装与引脚:SOT-23-6 小封装,适合空间受限的板级应用。

四、典型应用场景

  • 汽车与车载辅助电源(适配12V/24V系统,需按系统认证要求评估);
  • 工业控制与分布式电源模块;
  • 电池供电与便携设备的点火/稳压电路;
  • 通信设备、监控与传感器供电点。

五、设计与布局建议

  • 输出设定:通过FB引脚外接电阻分压器以VREF=0.8V为基准设定所需VOUT;
  • 电感选择:选型电流额定值高于2A、低DCR的功率电感以减小压降与发热;
  • 电容建议:输入侧采用低ESR陶瓷电容并具备足够纹波电流能力;输出侧优先低ESR陶瓷电容以提高瞬态响应;
  • 布局要点:将输入电容、开关管和电感紧凑放置以缩短信号环路;GND回流路径要短而宽,SW节点走线最短;热管理注意SOT-23-6的散热限制,必要时增加铜箔面积或散热通孔。
  • 模式控制:若需强制PWM或配置轻载行为,请参考器件的MODE/EN管脚设计要求(根据具体引脚功能配置拉高/拉低以切换模式或使能)。

六、封装与优势

SOT-23-6 小型封装有利于板级空间节省,内部集成功率开关和多重保护功能可减少外部元件数量与BOM复杂度,适合对体积与成本敏感的中小功率应用。

总结:HM8342Y 提供宽输入、高集成度与丰富保护机制,尤其适合12/24V等级的点载与中小功率稳压需求。实际设计中请结合应用工况选型外部磁性与滤波元件,并参考器件完整数据手册进行仿真与布局验证。

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