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Product Classification
Power boost IC
SC2321

DESCRIPTION

 

The SC2321 is a high-power density, fully integrated synchronous boost converter with a 16mΩ power switch and a 23mΩ rectifier switch to provide a high efficiency and small size solution in portable systems.The SC2321 has wide input voltage range from 2.7 V to 13 V to support applications with single cell and two cell Lithium batteries. The device has 10A switch current capability and can provide an output voltage up to 13V.

 

The SC2321 uses adaptive constant off-time peak current control topology to regulate the output voltage. In moderate to heavy load condition, it works in the PWM mode. In light load condition, the device works in the PFM mode to improve the efficiency. The switching frequency in the PWM mode is fixed.

 

The SC2321 also implements a fix soft-start function and a fixed switching peak current limit function. In addition, the device provides 14V output overvoltage protection, cycle-by-cycle overcurrent protection, and thermal shutdown protection.

FEATURES

 

Input voltage range VIN: 2.7V to 13V

 

Output voltage range VOUT: 4.5V to 13V

 

switch peak current limit: up to 12A High Efficiency

 

93% (VIN = 7.4V, VOUT=12V, IOUT =3A)

 

92% (VIN = 3.6V, VOUT=9V, IOUT =1A) PFM modulation mode at light load

 

1.0μA current consumption during shutdown

 

Fix switching frequency FIX soft start time

 

Output overvoltage protection (at 14V), cycle-by-

 

cycle overcurrent protection, thermal shutdown protection

Pb-free Packages,SOP8-PP

 

APPLICATIONS

 

Wireless/ Speakers  Portable Speakers

 

Quick Charge Power Bank  E-Cigarette

 

Power Interface (USB Type-C, Thunderbolt)

 

POS Terminal Tablet PC/Note Book

TYPICAL APPLICATION

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DESCRIPTION

 

The SC2321 is a high-power density, fully integrated synchronous boost converter with a 16mΩ power switch and a 23mΩ rectifier switch to provide a high efficiency and small size solution in portable systems.The SC2321 has wide input voltage range from 2.7 V to 13 V to support applications with single cell and two cell Lithium batteries. The device has 10A switch current capability and can provide an output voltage up to 13V.

 

The SC2321 uses adaptive constant off-time peak current control topology to regulate the output voltage. In moderate to heavy load condition, it works in the PWM mode. In light load condition, the device works in the PFM mode to improve the efficiency. The switching frequency in the PWM mode is fixed.

 

The SC2321 also implements a fix soft-start function and a fixed switching peak current limit function. In addition, the device provides 14V output overvoltage protection, cycle-by-cycle overcurrent protection, and thermal shutdown protection


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