SEA05

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Design Win

Advanced CV/CC secondary controller

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Product overview

Description

The SEA05 is a highly integrated solution for SMPS applications requiring a dual control loop to perform CV (constant voltage) and CC (constant current) regulation.

The device integrates a voltage reference, two opamps (with OR-ed open-drain outputs), and a lowside current sensing circuit.

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, housed in one of the smallest available package, is ideal for space-shrunk applications such as adapters and chargers.

  • All features

    • Open-drain output stage
    • Current sense threshold: 50 mV
    • SOT23-6L micro package
    • Constant voltage and constant current control
    • Low quiescent consumption: 200 µA
    • Wide operating VCC range [3.5 - 36] V
    • Voltage control loop accuracy +/- 0.5%
    • Low external component count
    • Voltage reference: 2.5 V

EDA Symbols, Footprints and 3D Models

STMicroelectronics - SEA05

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
SEA05TR
Active
SOT23-6L Industrial Ecopack2

SEA05TR

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

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ECCN (US)
ECCN (EU)
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Temperature (°C) Reference Voltage (V) (nom)
Budgetary Price (US$)*/Qty
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min
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SEA05TR Available at distributors

Distributor availability of SEA05TR

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Distributor reported inventory date:

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Active
EAR99 NEC Tape and Reel SOT23-6L - - -

0.3033

MALAYSIA

SEA05TR Active

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

Part Number:

SEA05TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-

Max:

-

Reference Voltage (V) (nom):

-

Country of Origin:

MALAYSIA

Distributor Name

Distributor reported inventory date:

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(*) 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