SEA05L

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

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Product overview

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 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.
  • All features

    • 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

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STMicroelectronics - SEA05L

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
SEA05LTR
Active
SOT23-6L Industrial Ecopack2

SEA05LTR

Package:

SOT23-6L

Material Declaration**:

PDF XML

Marketing Status

Active

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.

Sample & Buy

Part Number
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Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Reference Voltage (V) (nom)
Budgetary Price (US$)*/Qty
More info
min
max
SEA05LTR Available at 2 distributors

Distributor availability ofSEA05LTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 12 1 Buy from Distributor
MOUSER WORLDWIDE 125 1 Buy from Distributor

Distributor reported inventory date: 2021-10-16

Distributor Name

DIGIKEY

Stock

12

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

125

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-16

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-6L -40 150 2.5 0.293 / 1k
MORE INFO

Unit Price (US$):

0.293

Country of Origin:

MALAYSIA

SEA05LTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.293 / 1k

Distributor availability ofSEA05LTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 12 1 Buy from Distributor
MOUSER WORLDWIDE 125 1 Buy from Distributor

Distributor reported inventory date: 2021-10-16

Distributor Name

DIGIKEY

Stock

12

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

125

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-16

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-6L

Operating Temperature (°C)

(min)

-40

(max)

150

Reference Voltage (V) (nom)

2.5

Budgetary Price (US$)* / Qty

0.293 / 1k

Country of Origin

MALAYSIA

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors