12.6V 7A同步升压DCDC转换器SCT1271 可替代SGM6611

DESCRIPTION
The SCT1271 is a high efficiency synchronous boost 
converter with fully integrated a 17mΩ high-side 
MOSFET and a 14mΩ low-side MOSFET, featuring
2.7V to 12V input voltage range to support single cell 
or two cell Lithium ion/polymer batteries and up to 
9.5A peak switch current. The switch current limit can 
be adjustable with an external resistor. The SCT1271
has 7A continuous switch current capability and 
provides output voltage up to 12.6V. 
The SCT1271 adopts constant off-time peak current
control to provide fast transient response. An external 
compensation network allows flexibility setting loop 
dynamics to achieve optimal transient performance at 
different load conditions.
The SCT1271 works in the PWM at moderate and 
heavy load condition. The SCT1271 offers PFM mode 
at light load condition. The switching frequency is 
adjustable from 200KHz to 2.2MHz.
The SCT1271 features output overvoltage protection 
and thermal shutdown protection when t

FEATURES
 Wide Input Voltage Range: 2.7V-12V
 Wide Output Voltage Range: 4.5V-12.6V
 Fully Integrated 17mΩ High Side FET and
14mΩ Low Side FET
 Up to 93% Efficiency at Vin=3.3V, Vout=9V, and
Iout=2A
 Programmable and Up to 9.5A Peak Switch
Current Limit
 Typical Shut-down Current: 1uA
 Quiescent Current: 150uA
 Adjustable Switching Frequency: 200KHz to
2.2MHz
 PFM Operation Mode at Light Load
 Internal Soft Start and External Compensation
 Cycle-by-Cycle Overcurrent Protection
 Output Overvoltage Protection
 Thermal Shutdown Protection: 160°C
 QFN-11 2mm x 2.5mm Package
APPLICATIONS
Bluetooth Speaker
 Portable POS Terminal
 Quick Charge Power Bank
 E-Cigarette
 Outdoor Flashligh

 

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