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Name: STC4054GR
Brand: STMicroelectronics
SKU: STC4054GR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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STMicroelectronics STC4054GR

Part No.:: STC4054GR

Manufacturer:: STMicroelectronics

Package:: SOT-23-5 Thin, TSOT-23-5

Datasheet:: STC4054GR.pdf

Description:: IC BATT CHG LI-ION 1CEL TSOT23-5

In Stock:: 3445

Quantity:: Add To Cart

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STC4054GR Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
BatteryChemistry:
Lithium Ion
NumberofCells:
1
Current-Charging:
Constant - Programmable
ProgrammableFeatures:
Current
FaultProtection:
-
ChargeCurrent-Max:
800mA
BatteryPackVoltage:
4.2V
Voltage-Supply(Max):
6.5V
Interface:
-
OperatingTemperature:
-40°C ~ 85°C (TA)
MountingType:
Surface Mount

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STC4054GR information

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STC4054GR Typical application Circuitry

STC4054GR

The STC4054GR is a linear integrated circuit charger intended for single-cell lithium-ion or lithium-polymer batteries. It is often used in applications where portable electronic devices require battery charging. Here are some of its salient characteristics, a sample application situation, and design guidelines for a circuit that makes use of the STC4054GR.

Primary Characteristics of STC4054GR:

1. Linear Charging: Single-cell lithium-ion batteries can get linear charging from the IC.

2. Constant Current and Constant Voltage Charging: It ensures effective and secure battery charging by supporting charging stages with constant current (CC) and constant voltage (CV).

3. Voltage Range of Input: Since the IC can usually run across a large input voltage range, it can be powered by a variety of sources, including USB.

4. Charge Status Indication: It may include LED indicators or a charge status output pin to indicate the charging status.

5. Battery Temperature Monitoring: Some models offer battery temperature monitoring for added safety during charging.

6. Under-Voltage Lockout (UVLO): It can have UVLO to protect the battery from charging when the input voltage is too low.

7. Over-Temperature Protection: The IC may offer over-temperature protection to safeguard against overheating.

8. Overcurrent Safety Measures: To shield the battery and IC from harm, overcurrent protection may be a feature.

Example Application: Mobile Phone Battery Charger

Let's explore a common application scenario for the STC4054GR: designing a circuit to charge the battery of a mobile phone.

Circuit Connection:

1. STC4054GR Pin 1 (GND): Connect this pin to the ground (0V) reference of your circuit.

2. STC4054GR Pin 2 (BAT): Connect this pin to the positive terminal of the lithium-ion battery you want to charge.

3. STC4054GR Pin 3 (PROG): Connect this pin to a resistor to set the charge current according to your battery's specifications.

4. STC4054GR Pin 4 (EN): This pin can be connected to enable or disable charging. Charge is enabled by pulling this pin low (to GND).

5. STC4054GR Pin 5 (SET): To set the battery's float voltage, connect this pin to a resistor.

6. STC4054GR Pin 6 (USB) : To charge, connect this pin to a USB power source. This pin typically connects to a USB power supply.

Design Considerations:

1. Battery Specifications: Ensure that the STC4054GR is configured to match the specifications of the lithium-ion battery being charged, including the charge current and float voltage.

2. Charge Current: Choose an appropriate resistor value for the PROG pin to set the desired charge current.

3. Float Voltage: Set the float voltage using the SET pin resistor according to the battery manufacturer's recommendations.

4. Input Voltage: Make sure the input voltage from the USB source is within the specified range of the IC.

5. Thermal Management: Monitor the IC's temperature during charging, and consider providing a heatsink if necessary.

6. LED Indication: Implement LED indicators to show the charging status, which can include charging, complete, and fault conditions.

7. Safety Features: Consider adding additional safety features like a timer to prevent overcharging and temperature monitoring to avoid overheating.

8. Battery Protection: Ensure that the battery has built-in protection circuits for overcharging, over-discharging, and overcurrent conditions.

In summary, the STC4054GR is a versatile lithium-ion battery charger IC commonly used in applications like mobile phone battery chargers. When designing a circuit with this IC, it is crucial to address battery specifications, charge current, float voltage, input voltage, thermal management, LED indication, safety features, and battery protection to ensure safe and efficient battery charging in your specific application.

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6. What is the process for return or replacement of STC4054GR?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the STC4054GR we delivered, we will accept the replacement or return of the STC4054GR only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of STC4054GR.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations