BL8531C

产品特点
技术文档

MODE	VIN	VOUT	IQ	FOSC	Eff.	Accu.	Power switching	Package	Application
PFM	0.8~5.5V	2.5~6V	6μA	400KHz	90%	±2%	External MOSFET	SOT89-5 SOT23-3 SOT23-5	MP4 应急充鼠标玩具
Reference
RH5RK XC6368

低功耗,异步升压控制器,外置开关管

BL8531C series are CMOS-based PFM step-up DC-DC Controller with low supply current and high output voltage accuracy. Quiescent current drawn from power source is as low as 6uA. It is capable of delivering 500mA output current at 4.0V output with 2V input Voltage. Only four external components are necessary: An inductor, a Schottky diode, an output filter capacitor and a NMOSFET or a NPN transistor All of these features make BL8531C series be suitable for the portable devices, which are supplied by a single battery to four-cell batteries. BL8531C has a drive pin (EXT) for external transistor. So it is possible to load a large output current with a power transistor which has a low voltage dropout. BL8531C integrates stable reference circuits and trimming technology, so it can afford high precision and low temperature-drift coefficient of the output voltage. BL8531C is available in SOT-23-3, SOT-23-5 and SOT-89-3 packages which are PB free. And in SOT-23-5 the device can be switch on or off easily by CE pin, to minimize the standby supply current.

优势特点

Deliver 500mA at 4.0V Output voltage with 2V input Voltage
The controller output voltage can be adjusted from 2.5V～6.0V(In 0.1V step)
Output voltage accuracy±2%
Low temperature-drift coefficient of the output voltage100ppm/℃
Only four external components are necessary: An inductor, a Schottky diode, an output filter capacitor and a NMOSFET or a NPN transistor
High power conversion efficiency 90％
Low quiescent current drawn from power source 6uA
Small package--SOT-23-3, SOT-23-5, SOT-89-3

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