SEA05 Advanced CV/CC secondary controller
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
技术特性
- 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
|
应用领域
- Battery chargers
- AC-DC adapters
- LED drivers
管脚定义图
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SEA05 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| SEA05TR |
Active |
|
1000 |
SOT23-6L |
Tape And Reel |
|
|
DATASHEET
| 描述 |
版本 |
大小 |
| SEA05 : DS6685: Advanced constant voltage and constant current controller |
1 |
258KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN3971: STEVAL-ISV005V2: solar battery charger for lead acid batteries based on the SPV1020 and SEA05 |
1 |
1575KB |
DESIGN NOTES
| 描述 |
版本 |
大小 |
| DN0002: 10W off-line LED driver based on VIPER27 |
1.0 |
829KB |
PRODUCT PRESENTATIONS
