製品概要
概要
The device is a highly integrated solution for SMPS applications, with an LED pilot-lamp requiring a dual control loop to perform CV (constant voltage) and CC (constant current) regulation. The IC allows very efficient LED pilot-lamp driving which helps to reduce the standby consumption of the SMPS. It integrates a voltage reference, two op-amps (with OR-ed open-drain outputs), a low-side current sensing circuit and an LED pilot-lamp driver pin implemented with an open-drain mosfet driven by square waveform with 12.5% duty cycle at 1 kHz that allows reducing LED consumption.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 is ideal for space-critical applications.
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特徴
- Constant voltage and constant current control
- Very efficient LED pilot-lamp driver
- Wide operating VCCrange (3.5 V - 36 V)
- Low quiescent consumption: 250 μA
- Voltage reference: 2.5 V
- Voltage control loop accuracy ± 0.5%
- Current sense threshold: 50 mV
- Current control loop accuracy ± 4%
- Low external component count
- Open-drain output stage
- SOT23-6L package
注目ビデオ
All resources
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製品スペック (1)
| Resource title | Latest update | |||
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| 14 May 2018 |
14 May 2018
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アプリケーションノート (1)
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| 13 Sep 2018 |
13 Sep 2018
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技術ノート & 解説 (1)
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| 13 Sep 2018 |
13 Sep 2018
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パンフレット (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 07 Apr 2021 |
07 Apr 2021
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - SEA05L
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Symbols
Footprints
3D models
品質 & 信頼性
| 製品型番 | Marketing Status | パッケージ | グレード | RoHSコンプライアンスグレード | 材料宣誓書** |
|---|---|---|---|---|---|
| SEA05LTR |
量産中
|
SOT23-6L | インダストリアル | Ecopack2 |
|
SEA05LTR
Package:
SOT23-6LMaterial Declaration**:
(**) st.comで提供している材料宣誓書は、パッケージ･ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください
サンプル & 購入
| 製品型番 | 販売代理店から購入 | STから購入 | 製品ステータス | ECCN (US) | ECCN (EU) | 梱包タイプ | パッケージ | 温度（℃） | Reference Voltage (V) (nom) | Country of Origin | Budgetary Price (US$)*/Qty | 詳細情報 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小 | 最大 | |||||||||||||
| SEA05LTR | 2 distributors | Free Sample Buy Direct |
量産中
|
EAR99 | NEC | Tape And Reel | SOT23-6L | -40 | 150 | 2.5 | MALAYSIA | 0.2664 / 1k | ||
（*）概算用の希望小売単価（US$）です。現地通貨でのお見積りについては、STのセールス･オフィスまたは販売代理店までお問い合わせください。
