WMSIC Electronic Components

MICRONE MEL7136BM5G

ModelMEL7136BM5G
PackageSOT-23-5
BrandMICRONE
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MICRONE MEL7136BM5G
Type
MICRONE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICRONE
Electronic Component
MEL7136BM5G
Electronic Component
1
Package
SOT-23-5
Electronic Component
LEDDriver
Electronic Component
PWM; Analog
Electronic Component
0.044g
Electronic Component
1
Channel Count
1
Features
Built-in; (OTP)
Electronic Component
BM0264499161
Operating Temperature
40℃~+125℃
Electronic Component
5%
Output Current
1A
Operating Voltage(DC)
2.7V~18V

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

MEL7136BM5G LED驱动芯片产品概述

一、产品基本定位与品牌背景

MEL7136BM5G是南京微盟(MICRONE) 推出的一款单通道外置开关管型LED恒流驱动芯片,专为需要灵活调光、宽电压适应的LED照明场景设计。南京微盟作为国内电源管理芯片领域的主流厂商,该产品凭借小封装、宽温特性及完善的保护功能,可覆盖消费电子、汽车、工业等多领域应用,兼顾性能与成本优势。

二、核心电气参数梳理

芯片核心参数围绕LED驱动的稳定性、灵活性展开,关键指标如下:

  • 输入电压:DC 2.7V~18V宽范围,可直接对接3.7V锂电池、5V/9V适配器、12V车载电源等,无需额外电源转换电路;
  • 输出能力:单通道最大输出电流1A,恒流精度±5%,确保LED负载亮度一致性,避免光衰不均;
  • 调光方式:支持PWM调光+模拟调光双模式,适配不同场景的调光需求;
  • 工作温度:-40℃~+125℃工业级宽温,可稳定工作于极端环境(如汽车低温启动、户外高温暴晒);
  • 保护功能:内置过温保护(OTP) 与欠压保护(UVP),防止芯片及LED负载损坏;
  • 开关管配置:外置开关管设计,芯片仅负责控制驱动,提升系统设计灵活性。

三、关键功能特性解析

1. 宽电压输入自适应

2.7V~18V的输入范围覆盖了绝大多数常见电源类型,简化系统设计的同时,可适配便携式设备(锂电池)、车载系统(12V电源)、工业设备(9V适配器)等不同场景,无需额外升压/降压模块。

2. 精准恒流控制

±5%的恒流精度是LED驱动的核心指标之一:即使输入电压波动或环境温度变化,芯片仍能保持LED电流稳定,避免因电流过高导致的LED早衰,或电流过低导致的亮度不足。

3. 双调光模式灵活兼容

  • PWM调光:支持100Hz~100kHz宽频率范围,调光时无色彩偏移,适合显示背光、氛围灯等对色彩要求高的场景;
  • 模拟调光:通过电压调节实现线性亮度变化,适合台灯、应急灯等需要平滑调光的照明产品。

4. 完善的保护机制

  • 过温保护(OTP):芯片温度超过阈值(通常150℃左右)时,自动限制输出电流或关断,防止过热烧毁;
  • 欠压保护(UVP):输入电压低于2.5V(典型值)时停止工作,避免欠压导致的输出不稳定,延长产品寿命。

5. 外置开关管设计

芯片仅提供驱动信号,外置MOS管可根据LED负载需求选择(如大电流或高压LED串),既降低芯片自身功耗,又提升系统功率扩展性。

四、封装与引脚配置

芯片采用SOT-23-5超小型封装(尺寸约2.9mm×1.6mm×1.1mm),适合小型化产品设计(如便携式LED灯、车载氛围灯)。引脚功能如下(参考官方 datasheet):

引脚编号 功能 说明 1 VIN 输入电压端(接电源正极) 2 GND 接地端 3 CS 电流采样端(接Rcs) 4 DIM 调光控制端(PWM/模拟) 5 DRV 驱动外置MOS管栅极

五、典型应用场景

  1. 消费电子照明:LED台灯、小夜灯、智能穿戴设备状态灯、便携式应急灯(适配3.7V锂电池);
  2. 汽车电子:车载氛围灯、仪表盘背光、尾灯辅助照明、车内阅读灯(宽温满足汽车环境);
  3. 工业与安防:工业设备状态指示灯、安防摄像头补光灯、户外LED标识牌(宽温适应户外极端温度);
  4. 小型LED模组:LED广告灯箱小单元、智能照明模块(小封装适合模组集成)。

六、产品优势与选型建议

1. 核心优势

  • 性价比高:国内品牌出品,性能均衡且成本可控;
  • 设计灵活:外置MOS管+宽电压输入,适配多种LED负载;
  • 可靠性强:完善的保护功能+宽温特性,适合 harsh环境;
  • 小型化:SOT-23-5封装,节省PCB空间。

2. 选型注意

  • 外置MOS管需匹配输出电流(如1A输出选Rds(on)≤10mΩ的低功耗MOS);
  • 电流采样电阻计算:参考CS端基准电压(如Vcs=0.1V),则Rcs=Vcs/Iout(1A时选0.1Ω电阻);
  • 调光方式:需无色彩偏移选PWM,需线性调光选模拟。

综上,MEL7136BM5G是一款适配性强、可靠性高的LED驱动芯片,可满足多场景下的LED照明需求,是小型化、宽温应用的理想选择。

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