FP5217是异步升压驱动IC，内置NMOS 30V/8A/15mΩ，输入低启动电压2.8V与宽工作电压5V~24V，单节锂电池3V~4.2V应用，将Vout接到HVDD Pin；精准的反馈电压1.2V，软启动时间由外部电容调整，工作频率由外部电阻调整；过电流保护芯片内部NMOS，检测电感峰值电流，检测电阻Rcs连接SWS与GND之间，CS pin检测Vcs。
特色
➢启动电压2.8V
➢工作电压范围5V~24V
➢可调输出电压最高26V
➢反馈电压1.2V(±2%)
➢关机耗电流小于3μA
➢可调工作频率200kHz~1000kHz
➢可调软启动时间
➢输入低电压保护(UVP)
➢可调过电流保护(OCP)
➢过温保护(OTP)
➢内置30V/8A/15m MOSFET (峰值电流10A)
➢封装TSSOP-14L(EP)
应用范围
➢蓝牙音响
➢充电器
➢移动电源
➢携带式产品
General Description
The FP5217 is boost topology switching regulator for wide operating voltage applications. Its built-in 15mΩ power MOSFET makes this regulator highly power efficient. The non-inverting input of error amplifier connects to a 1.2V precision reference voltage. It has programmable switching frequency set by external resistor, and programmable inductor peak current limit connects a resistor from CS to GND. Current mode control and external compensation network make is easy and flexible to stabilize the system.
The FP5217 is available in the small footprint TSSOP-14L(EP) package to fit in space-saving PCB layout for application fields.
Features
Ø Start-up Voltage: 2.8V
Ø Wide Supply Voltage Operating Range: 5V to 24V
Ø Adjustable Output up to 26V
Ø Precision Feedback Reference Voltage: 1.2V (±2%)
Ø Shutdown Current: <3μA
Ø Programmable Switching Frequency: 200KHz~1000KHz
Ø Programmable Soft Start Function (SS)
Ø Input Under Voltage Protection(UVP)
Ø Adjustable Switching MOSFET Over Current Protection (OCP)
Ø Over Temperature Protection (OTP)
Ø MOSFET: 30V/8A/15mΩ (peak current 10A)
Ø Package: TSSOP-14L(EP)
Applications
Ø Chargers
Ø Handheld Devices
Ø Portable Products
Ø Power Bank
Ø Bluetooth Speaker
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