SEA05L

批量生产
Design Win

具有极高效LED指示灯驱动器的高级恒定电压和恒定电流控制器

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概述
样片和购买
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质量与可靠性
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Sales Briefcase

产品概述

描述

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.
  • 所有功能

    • 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

EDA符号、封装和3D模型

STMicroelectronics - SEA05L

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符号

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封装

3D model

3D模型

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
SEA05LTR
批量生产
SOT23-6L 工业 Ecopack2

SEA05LTR

Package:

SOT23-6L

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

样片和购买

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产品型号
Order from distributors
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Reference Voltage (V) (nom)
Budgetary Price (US$)*/Qty
单价(US$)
Country of Origin
最小值
最大值
SEA05LTR 无法联系到经销商,请联系我们的销售办事处
批量生产
EAR99 NEC Tape and Reel SOT23-6L -40 150 2.5

0.3545

MALAYSIA

SEA05LTR 批量生产

封装:
SOT23-6L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

SEA05LTR

ECCN (EU):

NEC

包装类型:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

150

Reference Voltage (V) (nom):

2.5

Country of Origin:

MALAYSIA

无法联系到经销商,请联系我们的销售办事处
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(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商