Constant voltage and constant current controller for battery chargers and adapters

Quantity $ per Unit Savings
1 - 9$0.940%
10 - 24$0.8410%
25 - 99$0.8015%
100 - 200$0.6630%
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In stock
Parameter NameParameter Value
Operating Temp Min Celsius-10.0
Operating Temp Max Celsius85.0
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameSOT23-6L

The TSM1052 is a highly integrated solution for SMPS applications requiring a dual control loop to perform CV (constant voltage) and CC (constant current) regulation.

The TSM1052 integrates a voltage reference, two op amps (with OR-ed open-drain outputs), and a low-side 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 (adapter, battery charger) and fixes the voltage regulation set point 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 set point and must be adequately rated in terms of power dissipation;

Frequency compensation components (RC networks) for both loops.

The TSM1052, housed in one of the smallest package available, is ideal for space-shrunk applications such as adapters and chargers.

Key features
  • Easy frequency compensation
  • Wired-or open-drain output stage
  • Secondary-side constant voltage and constant current control
  • Very low quiescent consumption
  • Very low voltage operation
  • Low external component count
  • SOT23-6 micro package
  • High-accuracy internal reference