SEA05L Datasheet Advanced constant voltage and constant current controller

Manufacturer: STMicroelectronics

SEA05L advanced constant voltage and constant current controller by STMicroelectronics - Datasheet Preview

Datasheet Details

Part number	SEA05L
Manufacturer	STMicroelectronics
File Size	204.48 KB
Description	Advanced constant voltage and constant current controller
Download	SEA05L Download (PDF)

General Description

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 lowside 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.

Overview

SEA05L Advanced constant voltage and constant current controller with very efficient LED pilot-lamp driver Preliminary.

Key Features

Constant voltage and constant current control.
Very efficient LED pilot-lamp driver.
Wide operating VCC range (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.

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SEA05	Advanced constant voltage and constant current controller