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Advanced CV/CC secondary controller
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The SEA05 is a highly integrated solution for SMPS applications requiring a dual control loop to perform CV (constant voltage) and CC (constant current) regulation.

The device integrates a voltage reference, two opamps (with OR-ed open-drain outputs), and a lowside current sensing circuit.

The voltage reference, along with one op-amp, is the core of the voltage control loop; the current sensing circuit and the other op-amp make up the current control loop.

The external components needed to complete the two control loops are: a resistor divider that senses the output of the power supply and fixes the voltage regulation setpoint at the specified value; a sense resistor that feeds the current sensing circuit with a voltage proportional to the dc output current; this resistor determines the current regulation setpoint and must be adequately rated in terms of power dissipation; the frequency compensation components (R-C networks) for both loops.

The device, housed in one of the smallest available package, is ideal for space-shrunk applications such as adapters and chargers.

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Errata Sheet
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Key Features

  • Constant voltage and constant current control
  • Wide operating VCC range [3.5 - 36] V
  • Low quiescent consumption: 200 µA
  • Voltage reference: 2.5 V
  • Voltage control loop accuracy +/- 0.5%
  • Current sense threshold: 50 mV
  • Open-drain output stage
  • Low external component count
  • SOT23-6L micro package

图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DS6685: Advanced constant voltage and constant current controller
1.1 255 KB

Application Notes

描述 版本 大小
AN3971: STEVAL-ISV005V2: solar battery charger for lead acid batteries based on the SPV1020 and SEA05
2.0 1,542 KB

Technical Notes & Articles

描述 版本 大小
TA0308: Reducing the total no-load power consumption of battery chargers and adapter applications
1.3 100 KB

Design Notes & Tips

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DN0002: 10W off-line LED driver based on VIPER27
1.0 826 KB

Presentations & Training Material


描述 版本 大小
ST products and solutions for solar energy
5.1 2,135 KB
Secondary regulation CC/CV and Supervisor ICs
2,282 KB

样品 & 购买

产品型号 Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Reference Voltage (nom) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
SEA05TRActiveSOT23-6LTape And Reel_Free Samples.19Distributor reported inventory date: 2016-02-09
Distributor NameRegionStockMin. order
ANGLIA LiveOrder NowEUROPE510003000
Farnell Element14Order NowEUROPE32641

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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