WMSIC Electronic Components

TMI STI8036

ModelSTI8036
PackageESOP-8
BrandTMI
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
TMI STI8036
Type
TMI
Minimum package
3000 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TMI
Electronic Component
STI8036
Electronic Component
1
Package
ESOP-8
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.125g
Electronic Component
1
Features
Built-in LDORegulator
Type
Electronic Component
Electronic Component
BM0230608235
Operating Temperature
40℃~+85℃@(TA)
Operating Voltage
9V~14V
Switching Frequency
800kHz~1.2MHz
Electronic Component
Electronic Component
Output Voltage
14V;19V

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

STI8036 产品概述

一、概述

STI8036 是拓尔微(TMI)面向中功率升压应用推出的一款升压型开关稳压器,采用 ESOP-8 封装,内置开关管,提供固定输出电压 14V 或 19V 两种版本,最大输出电流 500mA。工作输入电压范围为 9V~14V,开关频率位于 800kHz~1.2MHz,工作温度范围 -40℃~+85℃(TA)。器件以小型化、低外设件数量及高开关频率为特点,适合空间受限的车载或工业电源升压场合。

二、主要性能亮点

  • 输入电压:9V ~ 14V,适配常见车载及工业母线。
  • 输出电压:固定 14V 或 19V 可选,便于快速设计与量产。
  • 输出能力:最大 500mA,适合为中小功率模块或外围电路供电。
  • 开关频率:800kHz ~ 1.2MHz,高频率有利于减小外部电感与电容体积。
  • 内置开关管:简化驱动与布局,降低整体 BOM。
  • 封装:ESOP-8,利于散热和焊接可靠性。

三、典型应用场景

  • 汽车电子辅助电源、传感器或线束供电(9V~14V 母线升压至 14V/19V)
  • 工业控制模块的中间电源或驱动电源
  • 小型充电器、显示背光或摄像头模块的局部升压电源

四、典型电路与外部元件建议

为了兼顾效率、稳定与可靠性,建议的外部元件参考如下(具体选型应按实际电流/温升验证):

  • 电感:推荐 4.7µH ~ 10µH,饱和电流 > 1.5A,针对最低输入电压与最大负载情况下的电流纹波及不饱和裕量选型。
  • 二极管:若芯片非同步整流,建议采用低正向压降 Schottky,耐压 ≥ 30V,电流评级 ≥ 1A。
  • 输入电容:22µF~47µF 陶瓷(X7R),电压等级 ≥ 25V~50V,置于芯片 VIN 引脚附近以减小回路。
  • 输出电容:22µF~47µF 陶瓷(X7R),低 ESR 有利于输出纹波与瞬态响应。
  • 旁路与补偿元件:按数据手册提供的反馈网络与补偿元件布局,确保环路稳定。

五、热设计与可靠性注意

  • 芯片在中高输出功率下会产生显著热量(例如 19V×0.5A 输出,按效率计算芯片及外设损耗仍在瓦级),建议在 PCB 上设计底部散热大铜箔或热垫,保持良好热传导。
  • 在高环境温度或无风条件下需考虑降额使用或外加散热片/风道。
  • 推荐在输入侧加熔断器或保险元件,关键场合加 TVS 抗浪涌保护,防止瞬态损伤。

六、设计与布局建议

  • 将输入电容、开关管引脚、二极管与电感布置成最短回路,减小开关噪声与 EMI。
  • 输出电容靠近二极管与输出引脚放置以降低纹波。
  • 给 ESOP-8 的散热焊盘做足面积与通孔连接,便于热量传导到 PCB 内层或底层散热区。
  • 对于车载/工业应用,做好输入反接、防浪涌与滤波设计,确保长期可靠性。

STI8036 以其内置开关、固定输出和高开关频率的组合,适合需要紧凑体积与稳定升压输出的场合。实际设计中请参考器件完整数据手册与典型电路,并基于目标负载与工作环境完成元件选型与热仿真验证。

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