STC4054GR 800mA Charge Current 4.2V Li-Ion Battery Charger IC in TSOT-23 Package

Feature summary

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

Applications

• Cellular telephones
• PDAs
• Bluetooth applications
• Battery-powered devices

Description

The STC4054 is a constant current/constant voltage charger for single cell Li-Ion batteries. No external sense resistor or blocking diode is

Table 1. Pin description

Packaging & Shipping

Standard export packaging available. Customers can choose from cartons, wooden cases, and wooden pallets according to their requirements.

Frequently Asked Questions

How to obtain the price?

We typically provide quotations within 24 hours of receiving your inquiry (excluding weekends and holidays). For urgent pricing requests, please contact us directly.

What is your delivery time?

Small batches typically ship within 7-15 days, while large batch orders may require approximately 30 days depending on order quantity and season.

What are your payment terms?

Factory pricing with 30% deposit and 70% balance payment via T/T before shipment.

What are the shipping options?

Available shipping methods include sea freight, air freight, and express delivery (EMS, UPS, DHL, TNT, FEDEX). Please confirm your preferred method before ordering.