800mA Standalone linear Li-Ion battery charger with thermal regulation

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  • The STC4054 is a constant current/constant voltage charger for single cell Li-Ion batteries. No external sense resistor or blocking diode is required and its ThinSOT package make it ideally suited for portable applications.

    The STC4054 is designed to work within USB power specifications. An internal block regulates the current when the junction temperature increases, in order to protect the device when it operates in high power or high ambient temperature.
    The charge voltage is fixed at 4.2V, and the charge current limitation can be programmed using a single resistor connectd between PROG pin and GND. The charge cycle is automatically terminated when the current flowing to the battery is 1/10 of the programmed value. If the external adaptor is removed, the STC4054 turns off and a 2µA current can flow from the battery to the device. The device can be put into Shutdown Mode, reducing the supply current to 25µA. The device also has a charge current monitor, under voltage lockout, automatic recharge. The device is packaged in TSOT23-5L.

    Key Features

    • 25µA supply current in shutdown mode
    • C/10 charge termination
    • Soft-start limits inrush current
    • Low battery voltage detect for precharge setting
    • TSOT23-5L package
    • Single charge status output pin
    • Automatic recharge
    • Programmable charge current up to 800mA
    • Constant current / constant voltage operation with thermal regulation to maximize charge rate without risk of overheating
    • No external MOSFET, sense resistors or blocking diode required
    • Preset 4.2V charge voltage with 1% accuracy
    • Charge current monitor output for gas gauging
    • Charges single cell li-ion batteries directly from USB port

Circuit Diagram

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Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
STC4054GR TSOT23-5L Tape And Reel
Active
0.625 10000 EAR99 MALAYSIA Check Availability

Distributor availability ofSTC4054GR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6023 1 Order Now
RS COMPONENTS EUROPE 70 10 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
Newark Element14 AMERICA 283 0 Order Now
MOUSER WORLDWIDE 3122 1 Order Now
Farnell Element14 EUROPE 2490 1 Order Now

Distributor reported inventory date: 2019-12-10

Distributor Name

DIGIKEY

Stock

6023

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

70

Min.Order

10

Region

EUROPE Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

Newark Element14

Stock

283

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3122

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2490

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-10

Buy now

STC4054GR

Package

TSOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.625*

Distributor availability ofSTC4054GR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6023 1 Order Now
RS COMPONENTS EUROPE 70 10 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
Newark Element14 AMERICA 283 0 Order Now
MOUSER WORLDWIDE 3122 1 Order Now
Farnell Element14 EUROPE 2490 1 Order Now

Distributor reported inventory date: 2019-12-10

Distributor Name

DIGIKEY

Stock

6023

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

70

Min.Order

10

Region

EUROPE Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

Newark Element14

Stock

283

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3122

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2490

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-10

Marketing Status

Active

Unit Price (US$)

0.625

Quantity

10000

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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Technical Documentation

    • Description Version Size Action
      DS4902
      800 mA standalone linear Li-Ion battery charger with thermal regulation
      1.3
      299.07 KB
      PDF
      DS4902

      800 mA standalone linear Li-Ion battery charger with thermal regulation

    • Description Version Size Action
      AN2370
      800 mA standalone linear Li-Ion battery charger with thermal regulation
      4.3
      228.58 KB
      PDF
      AN2370

      800 mA standalone linear Li-Ion battery charger with thermal regulation

Publications and Collaterals

    • Description Version Size Action
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF

      Linear and Switching Voltage Regulators Selection Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STC4054GR
Active
TSOT23-5L Industrial Ecopack2

STC4054GR

Package:

TSOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSOT23-5L

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.

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