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STC4054GR from ST,ST Microelectronics

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STC4054GR

Manufacturer: ST, ST,ST

800mA STANDALONE LINEAR Li-Ion Battery charger with therminal regulation

Partnumber Manufacturer Quantity Availability
STC4054GR ST, ST,ST 9000 In Stock

Description and Introduction

800mA STANDALONE LINEAR Li-Ion Battery charger with therminal regulation The STC4054GR is a linear battery charger IC designed for single-cell lithium-ion or lithium-polymer batteries. Below are the key specifications, descriptions, and features based on the manufacturer's (STMicroelectronics) data:

### **Specifications:**  
- **Input Voltage Range:** 4.25V to 6.5V  
- **Charge Current:** Programmable up to 800mA  
- **Battery Voltage:** 4.2V ±1% (adjustable)  
- **Pre-Charge Current:** 10% of the programmed charge current  
- **Termination Current:** 10% of the programmed charge current  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOT23-5  

### **Descriptions:**  
- The STC4054GR is a compact, cost-effective linear charger with integrated power MOSFET and thermal regulation.  
- It automatically switches between constant current (CC) and constant voltage (CV) charging modes.  
- Features a built-in charge termination function when the battery reaches full capacity.  

### **Features:**  
- **Thermal Regulation:** Reduces charge current if temperature exceeds a safe threshold.  
- **Auto-Recharge:** Automatically restarts charging if battery voltage drops below a threshold.  
- **Charge Status Indication:** Open-drain status output pin (CHRG) for monitoring charging state.  
- **Battery Protection:** Includes reverse discharge protection and overvoltage protection (OVP).  
- **Low Power Consumption:** Shutdown current < 1µA when not charging.  

For detailed application notes, refer to the official STMicroelectronics datasheet.

Application Scenarios & Design Considerations

800mA STANDALONE LINEAR Li-Ion Battery charger with therminal regulation

Alternative Part Number

  • TP4054 --: Pin-compatible single-cell Li-ion linear charger in SOT-23-5 with the same 800mA-class charging profile and CC/CV operation as the STC4054GR.
  • LTC4054 --: Original industry-standard standalone Li-ion linear charger that the STC4054 family was modeled after; same SOT-23-5 footprint and charge algorithm.
  • MCP73831 --: Widely available single-cell Li-ion/Li-Po linear charge management controller in SOT-23-5, functionally equivalent for small battery charging applications.

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