NMOS-NMOS Synchronous Buck Converter with 300 kHz Frequency and >95% Efficiency30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle High-Accuracy Voltage and Current Regulation ±0.5% Charge Voltage Accuracy±3% Charge Current Accuracy±3% Adapter Current Accuracy±2% Input Current Sense Amp Accuracy IntegrationInternal Loop CompensationInternal Soft StartSafetyInput Overvoltage Protection (OVP)Dynamic Power Management (DPM) with Status IndicatorReverse-Conduction Protection Input FET Supports Two, Three, or Four Li+ Cells 5 - 24 V AC/DC-Adapter Operating RangeAnalog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control Charge Voltage (4-4.512 V/cell) Charge Current (up to 10 A, with 10-m sense resistor) Adapter Current Limit (DPM)Status and Monitoring OutputsAC/DC Adapter Present with Programmable Voltage Threshold Low Input-Power Detect with Adjustable Threshold and Hysteresis DPM Loop ActiveCurrent Drawn from Input Source Battery Discharge Current Sense with No Adapter, or Selectable Low-Iq modeSupports Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.Charge Enable 10-µA Off-State Current28-pin, 5x5-mm QFN packageAPPLICATIONSNotebook and Ultra-Mobile ComputersPortable Data-Capture TerminalsPortable PrintersMedical Diagnostics EquipmentBattery Bay ChargersBattery Back-up Systems