5V Step-Up Power Module Lithium Battery Charging Protection Board HT4928S / SW8208S

5V Step-Up Power Module Lithium Battery Charging Protection Board HT4928S / SW8208S

5V Step-Up Power Module Lithium Battery Charging Protection Board HT4928S / SW8208S is a very high degree of integration of the mobile power management chip, built-in charging management module, LED indication module, a booster module discharge management, and the use of small SOP8 package, the periphery of minimal elements, can form a powerful mobile power scheme.

• highly integrated, minimal external components;
• built-in fixed 0.8A linear charging mode;
• trickle / constant-current / constant-voltage three-charging, constant voltage 4.20 V (typical), support 0V battery;
• built-in charge temperature can be automatically reduced in accordance with the electric charge flow, 130 degrees began to decrease, it can be reduced to a minimum 0;
• charge input anti-backfeed function is not required the anti-backfeed diodes;
• boost synchronous rectification circuit, up to 91% efficiency, low heat, a fixed 5.1V output, no external resistor;
• output (typical battery 3.6V) current 0.8A, having a constant power output, a complete overcurrent, short circuit protection;
• load inserted automatically start boost, remove the load automatic sleep;
• low battery alerts;
• single / dual lamp indication of charging and discharging;
• shared input / output ports, identification charge / discharge;
• 4KV ESD；
• fixed switching frequency 1MHZ;
• battery overcharge, over-discharge protection;
• SOP8 small package.