Constant voltage and constant current controller for battery chargers and adapters

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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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Part Number
Package
Packing Type
Temperature (°C) Reference Voltage (V) (nom)
Marketing Status
Budgetary Price (US$)*
Quantity
More info
Order from Distributors
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min
max
TSM1052 SOT23-6L Tape And Reel -10 85 1.21
Active
0.216 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofTSM1052

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2920 1 Order Now
RS COMPONENTS EUROPE 5890 1 Order Now
AVNET AMERICA 21000 0 Order Now
ARROW EUROPE 12000 0 Order Now
ARROW AMERICA 15000 3000 Order Now
P&S ASIA/PACIFIC 460 1 Order Now
MOUSER WORLDWIDE 2916 1 Order Now
Farnell Element14 EUROPE 11389 1 Order Now
ANGLIA Live EUROPE 9000 3000 Order Now

Distributor reported inventory date: 2019-09-17

Distributor Name

DIGIKEY

Stock

2920

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

5890

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

21000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

12000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

15000

Min.Order

3000

Region

AMERICA Order Now

P&S

Stock

460

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

2916

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

11389

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

9000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-17

Buy now

TSM1052

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.216*

Distributor availability ofTSM1052

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2920 1 Order Now
RS COMPONENTS EUROPE 5890 1 Order Now
AVNET AMERICA 21000 0 Order Now
ARROW EUROPE 12000 0 Order Now
ARROW AMERICA 15000 3000 Order Now
P&S ASIA/PACIFIC 460 1 Order Now
MOUSER WORLDWIDE 2916 1 Order Now
Farnell Element14 EUROPE 11389 1 Order Now
ANGLIA Live EUROPE 9000 3000 Order Now

Distributor reported inventory date: 2019-09-17

Distributor Name

DIGIKEY

Stock

2920

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

5890

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

21000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

12000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

15000

Min.Order

3000

Region

AMERICA Order Now

P&S

Stock

460

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

2916

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

11389

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

9000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-17

Operating Temperature (°C)

(min)

-10

(max)

85

Reference Voltage (V) (nom)

1.21

Marketing Status

Active

Unit Price (US$)

0.216

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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

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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS5141
      Constant voltage and constant current controller for battery chargers and adapters
      2.2
      256.89 KB
      PDF
      DS5141

      Constant voltage and constant current controller for battery chargers and adapters

    • Description Version Size Action
      AN2711
      120 VAC input-Triac dimmable LED driver based on the L6562A
      3.3
      1.28 MB
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      AN3212
      5 W to 7 W high power factor offline LED driver based on VIPer devices
      2.0
      2.18 MB
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      AN2448
      EVALTSM1052: Ultra small battery charger using TSM1052
      1.1
      1.08 MB
      PDF
      AN2840
      EVLVIP17-5WCHG: 5 W low standby consumption battery charger demonstration board based on the VIPER17HN
      1.1
      651.9 KB
      PDF
      AN2711

      120 VAC input-Triac dimmable LED driver based on the L6562A

      AN3212

      5 W to 7 W high power factor offline LED driver based on VIPer devices

      AN2448

      EVALTSM1052: Ultra small battery charger using TSM1052

      AN2840

      EVLVIP17-5WCHG: 5 W low standby consumption battery charger demonstration board based on the VIPER17HN

    • Description Version Size Action
      TA0308
      Reducing the total no-load power consumption of battery chargers and adapter applications
      1.3
      100.02 KB
      PDF
      TA0308

      Reducing the total no-load power consumption of battery chargers and adapter applications

Publications and Collaterals

    • Description Version Size Action
      TSM1052: CC/CV controller for chargers and adapters 1.0
      155.17 KB
      PDF

      TSM1052: CC/CV controller for chargers and adapters

    • Description Version Size Action
      Power Management Guide 06.2019
      5.5 MB
      PDF

      Power Management Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
TSM1052
Active
SOT23-6L Industrial Ecopack2

TSM1052

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.