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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
優(yōu)勢替代
SC89171 SC89171.pdf

No.13778

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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