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SM5451

A Very High Efficiency Switched Capacitor 6A Charger with Quadruple Mode

Features ?HighlyIntegratedSwitchedCapacitorChargerwithaQuadruplemode oMaximum6AChargingCurrentat2:1forwardmode oMaximum5AChargingCurrentat1:1forwardmode oMaximum2.25AIBUSCurrentat1:2reversemode oMaximum4.5AIBUSCurrentat1:1reversemode ?97EfficiencyatV

SM5451

A Very High Efficiency Switched Capacitor 6A Charger with Quadruple Mode; ? ?\n? -Highly? Integrated? Switched-Capacitor? Charger? with? a Quadruple mode\n? o Maximum 6A Charging Current at 2:1 forward modeo Maximum 5A Charging Current at 1:1 forward modeo Maximum 2.25A IBUS Current at 1:2 reverse modeo Maximum 4.5A IBUS Current at 1:1 reverse mode\n? ?\n? -97.15% Efficiency at VBAT=4V and IBAT=5A at 2:1 mode\n? ?\n? -Embedded Infinite Regulation Loop with an internal Q RB Switch\n? ?\n? o IBUS Input Current Regulationo VBAT Output Voltage Regulationo IBAT Output Current Regulation\n? ?\n? -Very Accurate 6-Channel ADC with 12-Bit Resolution\n? o VBUS Input Voltage with 4mV Resolutiono IBUS Input Current with 2mA Resolutiono VBAT Output Voltage with 2mV Resolutiono IBAT Output Current with 2mA Resolutiono THEM Temperature with 8mV Resolutiono Die Temperature with 1°C Resolution\n? ?\n? -Smart Protections\n? o Programmable Input/Output Over-Voltage Protectiono Programmable Input/Output Over-Current Protectiono Programmable Input Under-Current Protectiono Flying Capacitor Short Protectiono Die Thermal Shutdowno Watchdog Timer\n? ?\n? -Up to 1MHz Fast-mode Plus I 2 C Interface\n? -42-Bump, WLCSP Package?\n;

The? SM5451? is a? highly integrated quadruple-mode?switched capacitor charger that integrates an infinite?regulation loop and a very accurate 12-Bit ADC. The device?features not only a? switched-capacitor architecture for a?current doubler mode but also a path- through topology for a?bypass mode.??\n This very high efficiency switched capacitor charger with a?very low R DS_ON? resistance reduces the thermal dissipation?of a fast-charging system, which results in shorter charging?time. The device integrates a stand-alone infinite regulation?loop for IBUS, VBAT and IBAT using an internal Q RB? switch.?The device also includes a? very accurate? 12-bit? ADC? to?provide input voltage, input current, output voltage, output?current, THEM pin and die temperature needed to manage?the charging profile of fast charging system.?The device integrated powerful protection schemes such as?over-voltage, over-current, under-current, over-temperature,?a? flying capacitor short-circuit, and a watchdog timer to?secure a robust charging for the system.??\n The SM5451 is available in 42-bumps WLCSP package.?\n

SM5451

電容分壓器;

ETC

SN5451

AND-OR-INVERTGATES

SN5451

AND-OR-INVERTGATES

SN5451

AND-OR-INVERTGATES