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SMART BATTERY CHARGER, LEVEL-2
FEATURES High Efficiency Integrated Power MOSFET Synchronous Buck Charger Programmable Battery Voltage, Charge Current, and AC Adapter Current via SBS- SMBus Interface AC Adapter Operating Range 18V - 22V DC.
LED Indication for Control and Status Signals. CHARGING INDICATION Four LED lights go on after switching on. The charger reads the battery information, and then start charging.
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LED Status
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Capacity
Percentage
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All the four LEDs blink circularly
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<25%
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LED1 is on. The other three LEDs blink circularly
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<50%
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Both LED1 and LED2 are on. Both LED3 and LED4 blink circularly
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<75%
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LED4 blinks. The other three LEDs are on
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<100%
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All the four LEDs are on
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= 100%
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The Charger Circuit Module is a high-efficiency, synchronous battery charger with integrated power MOSFETs, and an integrated input current comparator, offering low component count for space-constraint, multi-chemistry battery charging applications. It is designed to deliver up to 4A of charge current to Li-Ion or Li-Polymer battery pack. High frequency design for a small inductor. The Charger Module has a highly integrated battery charge controller designed to work with external host commands. The charge voltage, charge current, and input current are programmable via SBS-like SMBus interface. The dynamic power management (DPM) function modifies the charge current depending on system load conditions, avoiding ac adapter overload. High accuracy current sense amplifiers enable accurate measurement of the ac adapter current, allowing monitoring of overall system power. Integration
- Integrated Power MOSFETs
- Input Current Comparator
- Internal Soft-Start
Safety
- Thermal Regulation Loop and Thermal Shutdown
- Dynamic Power Management (DPM)
- Power FETs Over Current Protection
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