SD6271恒流模式的PWM升压IC,内置过温、关断、欠压、过流保护.pdf

SHOUDING SD6271 1MHz, 2A Step-Up Current Mode PWM Converter General Description The SD6271 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.25Ω 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 SD6271 is available in the SOT23-6L package and provides space-saving PCB for the application fields. Features  Adjustable Output up to 24V  Internal Fixed PWM frequency: 1.0MHz  Precision Feedback Reference Voltage: 0.6V (±2%)  Internal 0.25Ω, 2A, 26V Power MOSFET  Shutdown Current: 0.1μA  Over Voltage Protection  Over Temperature Protection  Adjustable Over Current Protection: 0.5A ~ 2.5A  Package: SOT23-6L Applications  Chargers  LCD Displays  Digital Cameras  Handheld Devices  Portable Products Typical Application Circuit SD6271 1/9 SHOUDING SD6271 Function Block Diagram Pin Descriptions SOT23-6L Name No. I / O Description LX 1 O Power Switch Output Top View GND 2 P IC Ground FB 3 I Error Amplifier Inverting Input AAA LX 1 6 OC LLL EN