Advanced constant voltage and constant current controller with very efficient LED pilot-lamp driver

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  • 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.

    主要特性

    • 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

样片和购买

产品型号
封装
包装类型
温度(ºC) Reference Voltage (V) (nom)
供货状态
预算价格(US$)
数量
更多信息
从分销商订购
从ST订购
min
max
SEA05LTR SOT23-6L Tape And Reel -40 150 2.5
批量生产
0.2664 1000
更多信息

ECCN (US):

EAR99

Country of Origin:

-

查看供货情况

Distributor availability ofSEA05LTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1407 1 Order Now
ARROW AMERICA 17 1 Order Now
MOUSER WORLDWIDE 1270 1 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

代理商库存报告日期: 2019-11-19

代理商名称

DIGIKEY

库存

1407

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

17

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

1270

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

3000

Min.Order

3000

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-19

获取样片

SEA05LTR

封装

SOT23-6L

包装类型

Tape And Reel

单价(US$)

0.2664*

Distributor availability ofSEA05LTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1407 1 Order Now
ARROW AMERICA 17 1 Order Now
MOUSER WORLDWIDE 1270 1 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

代理商库存报告日期: 2019-11-19

代理商名称

DIGIKEY

库存

1407

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

17

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

1270

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

3000

Min.Order

3000

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-19

Operating Temperature (°C)

(min)

-40

(max)

150

Reference Voltage (V) (nom)

2.5

供货状态

批量生产

单价(US$)

0.2664

数量

1000

ECCN (US)

EAR99

Country of Origin

-

(*) 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

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
SEA05LTR
批量生产
SOT23-6L 工业 Ecopack2

SEA05LTR

Package:

SOT23-6L

Material Declaration**:

Marketing Status

批量生产

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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