WMSIC Electronic Components

GATEMODE GM7333K

ModelGM7333K
PackageSOT-23-5
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
GATEMODE GM7333K
Type
GATEMODE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
1.2V@(250mA)
Electronic Component
GATEMODE
Electronic Component
GM7333K
Electronic Component
1
Package
SOT-23-5
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.047g
Electronic Component
1
Features
Current
Electronic Component
BM0264228270
Operating Temperature
40℃~+125℃@(Tj)
Operating Voltage
40V
Output
Electronic Component
Output Voltage
3.3V
Output Current
250mA

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

GM7333K 产品概述

一、产品简介

GM7333K 是捷茂微(GATEMODE)推出的一款高压低压差线性稳压器(LDO),采用 SOT-23-5 小型封装,固定输出 3.3V、最大输出电流 250mA,输入耐压可达 40V,面向对体积、小静态电流和多重保护要求的便携与工业电子应用。器件在宽温度范围内可靠工作(-40℃ ~ +125℃@Tj),适合车载、工业与消费电子场景中对稳压精度与保护功能有较高要求的电源设计。

二、主要特点

  • 输出极性:正极,固定输出 3.3V
  • 最大输出电流:250mA
  • 工作电压(最大输入):40V
  • 压差(Dropout):1.2V @ 250mA
  • 极低静态电流:Iq = 1.5 µA(典型,待数据手册确认)
  • 多重保护机制:
    • 反向/反极性电流保护(防止输出到输入反向导通)
    • 过流保护(限流,保护器件与负载)
    • 热关断保护(过温时自动关断)
    • 使能控制(EN 接口,用于使能/关断输出)
    • 输入欠压保护(UVLO,保证上电序列稳定)
  • 封装:SOT-23-5,体积小,适合空间受限的应用

三、电气性能概览

  • 输出类型:固定 3.3V
  • 输出通道数:1 路
  • 压差说明:在满额定电流(250mA)条件下,典型压差约为 1.2V。实际设计中需考虑工作电流与输入电压以确保输出稳定。
  • 静态电流:极低待机电流适合电池供电的系统,降低待机功耗。 注意:具体精度、纹波抑制(PSRR)、负载/线性调整率等详细参数请参见官方数据手册。

四、引脚与典型外接(建议)

GM7333K 采用 SOT-23-5 封装,典型引脚功能包括 VIN、VOUT、GND、EN 与一脚保留/地/补偿(请以数据手册为准)。典型外接电路建议如下:

  • 输入端(VIN):靠近 VIN 引脚放置输入陶瓷电容(例如 1µF ~ 10µF,X5R/X7R),用于滤除高频噪声并稳定输入。
  • 输出端(VOUT):输出侧放置低 ESR 陶瓷电容(例如 1µF ~ 10µF,X5R/X7R),保证稳压器稳定工作并提供瞬态响应。若系统对负载瞬态要求高,可适当增大电容或并联电解/钽电容。
  • EN 引脚:用于开关控制,可直接连接至 MCU 的 GPIO 或通过上拉至 VIN 以默认使能(EN 极性请参照数据手册确认)。
  • 反向保护与滤波:在可能出现反向电流或电磁干扰的场合,可在输入端加入反向保护二极管或 TVS,输出端视情况加入滤波网络。 (注:以上为典型建议,具体引脚排列与外接元件数值请以官方资料为准。)

五、热设计与功耗估算

线性稳压器的功耗主要由输入与输出电压差与输出电流决定:Pd = (Vin - Vout) × Iout。示例:

  • Vin = 5V,Iout = 250mA:Pd = (5 - 3.3) × 0.25 = 0.425W(通常可在 SOT-23-5 在良好散热条件下工作)
  • Vin = 12V,Iout = 250mA:Pd = (12 - 3.3) × 0.25 ≈ 2.175W(需考虑良好散热或降额)
  • Vin = 40V,Iout = 250mA:Pd ≈ 9.175W(非实际工作条件,SOT-23-5 无法散热,应避免)

设计时应避免在高 Vin 与满载情况下长期工作,必要时采取限流、热保护或改用开关降压后配合 LDO 精密输出的方案。

六、典型应用场景

  • 汽车电子(注意高压输入与宽温度要求)
  • 工业控制模块与传感器供电
  • 电池供电设备与便携仪器(因低静态电流而延长待机寿命)
  • 通信设备、MCU/传感器基准供电、模拟前端偏置

七、使用注意事项与设计建议

  • 在高输入电压场景下,应预先评估器件功耗并加以降额或散热措施,避免触发热关断。
  • 输出电容选择对 LDO 稳定性至关重要,优先使用 X5R/X7R 陶瓷电容并遵循数据手册推荐的容量与等效串联电阻(ESR)范围。
  • EN 引脚用以实现电源管理,请确认 EN 的电平极性与驱动能力。
  • 在要求反向电流严格受控的系统中,确认内部反向保护工作机理与极限条件。
  • 最终产品设计请参照 GM7333K 的完整数据手册与器件典型应用图,必要时与捷茂微技术支持沟通以确认封装引脚定义与实际参数。

如需更详细的电气参数、引脚排列图和应用电路图,请向捷茂微索取 GM7333K 的正式数据手册或联系技术支持以获得完整规格与评估建议。

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