3.7V，4.2V锂电池升压5V,6V,7.4V芯片电路图规格书.pdf

PW5300 Wuxi PWChip Semi Technology CO., LTD Step-Up Current Mode PWM Converter GENERAL DESCRIPTION The PW5300 is a current mode boost DC -DC converter. Its PWM circuitry with built-in 0.2Ω power MOSFET make this regulator highly power efficient. The internal compensation network also minimizes as much as 6 external component counts. The non-inverting input of error amplifier connects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrush current. The PW5300 is available in the SOT23-6L package and provides space-saving PCB for the application fields. FEATURES  Adjustable Output up to 12V  Over Voltage Protection  Internal Fixed PWM frequency: 1.0MHz  Adjustable Over Current Protection:  Precision Feedback Reference Voltage: 0.5A ~ 2.5A ( Vin ) 0.6V (±2%)  Typical application ：  Internal 0.2Ω, 2.5A, 16V Power MOSFET VIN=3V ~4. V ，Vout=5V,Iout=1A ；  Shutdown Current: 0.1μA VIN=3V ~4. V ，Vout=9V,Iout=0.5A  Over Temperature Protection APPLICATIONS  Chargers  LCD Displays  Digital Cameras  Handheld Devices  Portable Products TYPICAL APPLICATION CIRCUIT VIN Vout PW5300 5 1 VIN LX 4 3 EN