SLM6300

SLM6300 is a 2.5A lithium-ion battery charger designed for 5V adapters. It employs a 550kHz fixed-frequency synchronous buck converter, achieving a charging efficiency of over 90% with minimal self-heating. The device integrates 28V high-voltage components to effectively prevent chip damage caused by surge voltages or accidental connection to high-voltage adapters, ensuring high safety. The SLM6300 incorporates a complete charge termination circuit, automatic recharge function, and a preset 4.2V charge voltage with ±1% accuracy. It also integrates multiple protection features including reverse current protection, output short-circuit protection, and chip and battery temperature protection. Housed in a compact DFN3x3-10L package, it requires minimal external components and PCB area, making it suitable for embedding in various handheld applications as a high-efficiency charger for high-capacity batteries.

Applications

• E-cigarettes
• Electric toys
• Power tools
• Portable audio/video players
• Portable devices

Key features

• Up to 28V maximum voltage rating
• 6.3V input overvoltage protection
• 550kHz fixed switching frequency
• Output efficiency over 90%
• Adjustable output current up to 2.5A
• Automatic input current detection, adapter-adaptive
• No reverse-current blocking diode required
• No external power MOSFET or freewheeling diode required
• 4.2V charge voltage with ±1% accuracy
• Dual charge status indicator outputs rated up to 28V
• Shutdown current as low as 20μA
• 2.9V trickle charging
• Soft-start for inrush current limiting
• Battery temperature monitoring
• Output short-circuit protection
• Compact DFN3x3-10L package