Our advantages

Chinese manufacturing processes have undergone years of iteration, resulting in mature and reliable technologies. Many international corporations opt for production outsourcing in China.  As an electronic components manufacturer in China, our products can fully replace those of major international brands in 99% of applications without the need for testing verification. Our products boast high consistency in quality, reasonable pricing, ample inventory, flexible supply, short lead times, and professional after-sales service. 

Description

The SL4057 is a high performance constant current/voltage linear charger for single-cell Li-Ion batteries.The SL4057 is available in a SOT23-6 package with fewer peripheral components, which makes it ideal for portable products and suitable for powering USB power supplies as well as adapter power supplies.

Features

● Programmable charging current 500ma

● No external mosfets, detection resistors and isolation diodes required

● Complete linear charger for single cell li-ion batteries in sot23-6 package

● Constant current/constant voltage operation with thermal regulation to maximize charge rate without risk of overheating. 

● 4.24v pre-charge voltage with ±1% accuracy

● Charge current monitor output for battery level detection

● Automatic re-charging

● Charge status dual output, no battery and fault status indication

● C/10 charge termination

● 25ua quiescent current in standby mode

● 2.9v trickle charge

● Soft start limits inrush current

● Battery reverse connection protection

● Battery undervoltage protection activates charging

Applications

● Cell phones, PDA

● Mp3, mp4 players

● Battery level

● Digital camera

● Electronic dictionary

● Bluetooth, GPS navigator

● Portable equipment