QX5252 ETC | Alldatasheet
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Technical content
Overview: QX5252 is a solar LED lighting fixtures for ASIC design. It is driven by a switching circuit, Optical switch circuit, over discharge protection circuit, the internal integration of Short Based diodes and other circuit. Can be only one external inductor Composition of solar lighting devices. QX5252 QX5252 using patented technology, LED Undervoltage shutdown makes no blinking LED lights. Package: QX5252F: TO-94 QX5252E: DIP-8 Features: Operating voltage: 0.9V-1.5V Output current: 3mA-300mA Patented over-discharge protection: no flash off Integrated light control switch Integrated Schottky Diode Only one inductor external components High efficiency TO-94, DIP-8 package A typical application
Pin name Package and pin number Functional Description TO-94 DIP-8 SBAT 1 6 Positive terminal connected solar cells BAT 2 7 Rechargeable battery positive terminal connection VSS 3 2 Ground LX 4 3 Power switch drain LS - 5 Optical detection input NC - 1, 4, 8 Not connected (empty) QX5252 TO-94 QX5252 DIP-8 NC VSS LX NC NC BAT SBAT LS SBAT BAT VSS LX
Symbol Parameter Value Units Vmax Threshold voltage of the terminal IC 5.5V V Imax LX-side current limit 0.8A A TOPR Operating temperature range -40 - +125 °C TSTG Storage Temperature -65 - +150 °C VESD ESD voltage (Human Body Model) 2000V V LED power settings: LED power consumption is set by the inductance L: One VIN is charging the battery voltage. Light control switch set: QX5252F: directly controlled by the solar panels. QX5252E: LS side need to add a photosensitive resistor and a normal resistance. LS voltage is set by the following formula: When VLS is higher than 0.3 * VIN, the light control switch shuts the LED off, when VLS is lower than 0.22 * VIN, the light control switches LED lights on. L 330uH 270uH 220uH 150uH 100uH 82uH 56uH 47uH 33uH 11mA 14.5mA 15.5mA 25mA 34.5mA 38mA 50mA 75mA 110mA 62 10LED VINP L −=⋅ VLS VIN= R1+R2