QX5252

General Description QX5252 is an ASIC for solar LED lawn lights. Only a peripheral inductor is required to realize the step-up power supply, and the maximum drive efficiency can exceed 84%. QX5252 has automatical charge characteristic. QX5252 uses CMOS technology , therefore the power consumption is very small. QX5252 uses patented technique to realize the LED lights shutdown without flicker when the battery voltage is low. The operating voltage of QX5252 is 0.9V to 1.5V, suitable for a single AA battery or a single Ni-H battery. QX5252 Solar LED Driver Features  Operating Voltage: 0.9V~1.5V  3mA~300mA Output current  Patented over-discharge protection: shutdown without flicker  Integrated light control switch  Integrated Schottky Diode  Only an external inductor is requierd  High Efficiency  Low quiescent current: 17uA Applications  Solar lawn  Solar Landscape Typical Application SBAT BAT L1 VSS LX QX5252 QX5252 L1 BAT R1 LS R2 SBAT VSS LX (a)Uses solar panel to achieve light control (b) Uses photo-resistor to achieve light control Figure 1：Typical Application Circuit Diagrams of QX5252 QX5252_DS03EN QX Micro Devices Co., Ltd. www.qxmd.com.cn 1 of 9 Ordering Information Type Number QX5252 QX5252 Solar LED Driver Package Marking Pin Assignments 5252F XXXX Lot Number Date 5252F XXXX 1234 BAT VSS 54 SBAT BAT VSS LX TO-94 1 SBAT 2 LS 3 LX SOT23-5 QX5252_DS03EN QX Micro Devices Co., Ltd. www.qxmd.com.cn 2 of 9 Pin Description Pin Nam...