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AP8802 Datasheet(PDF) 5 Page - Diodes Incorporated |
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AP8802 Datasheet(HTML) 5 Page - Diodes Incorporated |
5 / 16 page AP8802 1A LED Step-down Converter AP8802 Rev. 5 5 of 16 DECEMBER 2009 DS31766 www.diodes.com © Diodes Incorporated Symbol Parameter Conditions Min Typ. Max Unit VIN Operating Input Voltage 8.0 - 48 V IOUT Continuous switch current (Note 4) 1 A IQ Quiescent Current - 75 120 μA FOSC Switching Frequency - - 0.5 MHz VTHD Internal Threshold Voltage 184 200 216 mV VREF Internal Reference Voltage - 1.25 - V SET SET pin input current VSET=VIN-0.2 - 5 - μA Rds(on) On Resistance of MOSFET ISW=0.8A 0.65 1.1 Ω ISW Leakage Switch leakage current - - 8 μA EN Voltage High ON 1.25 - - V EN Voltage Low OFF - - 0.2 V θ JA Thermal Resistance Junction-to-Ambient SOP-8L (Note 5) - 82 - °C/W SOP-8L-EP (Note 5) - 45 - °C/W DFN3030-10 (Note 5) - 38 - °C/W θ JC Thermal Resistance Junction-to-Case SOP-8L (Note 5) - 52 - °C/W SOP-8L-EP (Note 5) - 7 - °C/W DFN3030-10 (Note 5) - 24 - °C/W Notes: 4. Refer to figure 8 for the device derating curve. 5. Test condition for SOP-8L, SOP-8L-EP and DFN3030-10: Device mounted on FR-4 PCB, 2”x2”, 2oz copper, minimum recommended pad layout on top layer and thermal vias to bottom layer ground plane. For better thermal performance, larger copper pad for heat-sink is needed. Electrical Characteristics (VIN =12V, TA=25 oC, unless otherwise specified) |
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