1.6MHz Synchronous Li Ion and Li Polymer Stand Alone Battery Chargers with Selector, P2P SC89171.
FEATURES

• 4A Synchronous 1.6MHz PWM Charger

   Cycle-by-Cycle Current Limit

   Integrated 24V Switching MOSFETs

   Integrated Bootstrap Diode

   Digital Soft-Start

• Up to 95.2% Charge Efficiency

• 30V Absolute Maximum Input Voltage Rating with

    Adjustable Over-Voltage Threshold

• 4.5V to 22V Input Operating Voltage Range

• Automatic Power Path Selector (Battery/Adapter)

• Dynamic Power Management (DPM)

• Battery Charge Voltage Select 2-, 3-, or 

  4-Cell with 4.2V/Cell

• Less than 18μA Battery Current (No Adapter)

• Less than 1.3mA Input Current (Charge Disabled)

• High Accuracy

   ±0.5% Charge Voltage Regulation

   ±4% Charge Current Regulation

   ±4% Input Current Regulation

• Thermal Regulation (Current Limit for TJ = +120°C)

• Thermal Shutdown

• Battery Thermistor Sense Hot/Cold Charge Suspend

• Input Under-Voltage Lockout (UVLO)

• Input Over-Voltage (ACOV) Protection

PIN CONFIGUTION
CROSS
SC89171 SC89171.pdf

No.13779

FEATURES

• Wide input voltage: 4V~24V, 30V sustainable

• Integrated low-Rdson synchronous buck 

  charger, efficiency up to 97%

• Charging Management (Trickle Charge / Constant 

  Current Charge / Constant Voltage Charge / 

  Charge Termination/Auto-Recharge)

• Adjustable Input Current Limit and Charging Current

• Adjustable Constant Voltage by External Resistor setting

• FB version: 2.1V for 1 to 4 cells battery

• Powerpath management for System Power Selector

• Battery Detection

• Adjustable Charge Safety Timer

• NTC supporting JEITA Standard for Battery 

  temperature Protection

• Charging Status Indication

• Adjustable Input Over Voltage and Under Voltage Protection

• Battery Over Voltage Protection

• Battery Short Circuit Protection

• Charging Over Current and Under Current Protection

• Thermal Regulation and Shutdown

• QFN 3.5*5.5 footprint




PIN CONFIGUTION
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