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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
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Product Specifications (1)
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Application Notes (4)
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Technical Notes & Articles (1)
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Flyers (1)
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Brochures (1)
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| 29 Jul 2020 |
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - TSM1052
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| TSM1052 |
Active
|
SOT23-6L | Industrial | 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 | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Reference Voltage (V) (nom) | Country of Origin | Budgetary Price (US$)*/Qty | More info | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||
| TSM1052 | 8 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | SOT23-6L | -10 | 85 | 1.21 | MALAYSIA | 0.216 / 1k | ||
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors
