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
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
