XLSEMI 联系人：曹中立 电话：１３４２８７０６２２３ ＱＱ：１１５７００８１１５ Preliminary Datasheet 80V 0.5A High Efficiency Buck PFM LED Constant Current Driver XL8001 Features General Description n n n n n n n n The XL8001 is a monolithic high voltage switching regulator with PFM that is specifically designed to operate from a 12V~80V DC power supply. n n Operation Voltage DC 12V~80V. 0.1V current sense voltage reference. Directly drive 1~8 Series 1W LED. Excellent line and load regulation. Internal Optimize Power HV-MOSFET. Built in Thermal Shutdown Function. Built in Current Limiting Function. Built in Soft-Start Circuit. Available in SOIC-8 package. Up to 97% efficiency. The XL8001 is a high efficiency LED driver switching regulator. The LED string is driven at DC constant current rather than constant voltage, thus providing constant light output and enhanced reliability. Applications n n LED Lighting & LED LAMP General purpose LED lighting Figure1. Package Type of XL8001 Rev 1.0 www.xlsemi.com 1 XLSEMI Preliminary Datasheet 80V 0.5A High Efficiency Buck PFM LED Constant Current Driver XL8001 Pin Configurations START 1 8 CSN VREG 2 7 CSN CSP 3 6 VIN CSP 4 5 VIN XL8001 Figure2. Pin Configuration of XL8001 (Top View) Table 1: Pin Description Pin Number 1 2 3,4 5,6 7,8 Pin Name START VREG CSP VIN CSN Description Internal soft start Pin. Internal Voltage Regulation Pin. (The VREG is about 8V) Current Sense Positive Pin. (The current sense voltage is 0.1V) Input high voltage Pin. (Operation voltage 12V~80V) Current Sense Negative Pin. Rev 1.0 www.xlsemi.com 2 XLSEMI Preliminary Datasheet 80V 0.5A High Efficiency Buck PFM LED Constant Current Driver XL8001 Function Block Figure3. Function Block Diagram of XL8001 Typical Application Circuit Figure4. XL8001 Typical Application Rev 1.0 www.xlsemi.com 3 XLSEMI Preliminary Datasheet 80V 0.5A High Efficiency Buck PFM LED Constant Current Driver XL8001 Ordering Information Package Temperature Range Part Number Lead Free XL8001E1 XL8001TRE1 Marking ID Lead Free XL8001E1 XL8001E1 Packing Type Tube Tape & Reel XLSEMI Pb-free products, as designated with “E1” suffix in the par number, are RoHS compliant. Absolute Maximum Ratings（Note1） Parameter Symbol Vin PD Value -0.3 to 90 Internally limited Unit V mW Input Voltage Power Dissipation Thermal Resistance (SOP-8L) (Junction to Ambient, No Heatsink, Free Air) Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec) ESD (HBM) RJA 100 ºC/W TJ TSTG TLEAD -40 to 125 -65 to 150 260 >3000 ºC ºC ºC V Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Rev 1.0 www.xlsemi.com 4 XLSEMI Preliminary Datasheet 80V 0.5A High Efficiency Buck PFM LED Constant Current Driver XL8001 XL8001 Electrical Characteristics Ta = 25℃;unless otherwise specified. Reference test circuit figure4 Symbol VCSP Parameter Test Condition Min. Typ. Max. Unit CSP Voltage VIN=60V; Iled=300mA; Series 1~8 1W LED 95 100 105 mV ŋ VIN=60V; Iled=300mA; Pout=8W - 93.9 - % Max. Unit 80 V 97.8 KHz Efficiency Electrical Characteristics (DC Parameters) Parameters Symbol Input operation voltage VIN Switching Frequency Fosc Max. Duty Cycle DMAX VDMOS Drain-Source Breakdown Voltage VDMOS Drain-Source on resistor Thermal Shutdown Test Condition Min. Typ. 12 Figure4 (8*1W) VIN=60V 65.2 81.5 85 % VBRDS VGS=0V, IDS=250uA RDSON IDS=0.5A, VGS=8V 100 OTP Tj 160 0 C 20 0 C Thermal Shutdown Window Rev 1.0 90 V 120 mOhm www.xlsemi.com 5 XLSEMI Preliminary Datasheet 80V 0.5A High Efficiency Buck PFM LED Constant Current Driver XL8001 [1] Typical System Application (VIN=12V~80V) Figure5. XL8001 System Application at VIN=12V~80V Schematic Figure6. XL8001 System Application at VIN=12V~80V Efficiency Curve Rev 1.0 www.xlsemi.com 6 XLSEMI Preliminary Datasheet 80V 0.5A High Efficiency Buck PFM LED Constant Current Driver XL8001 Table1: Figure5 Input VIN=12V/24V/36V/48V/60V/72V system parameters table: LED String 1W*N 1 2 3 4 5 6 7 8 LED String 1W*N 1 2 3 4 5 6 7 8 VIN=12V VIN=24V VIN=36V FOSC Pout Efficiency FOSC Pout Efficiency FOSC Pout Efficiency 21.9K 22.3K 1.02W 1.97W 79.6% 89.9% 25.5K 26.6K 41.5K 40.5K 33.4K 20.9K 1.035W 2.022W 2.912W 3.86W 4.831W 5.575W 77.5% 87.1% 91.1% 93.5% 95.4% 96.6% 25.6K 39.3K 49.2K 55.0K 57.1K 55.6K 50.7K 42.4K 1.059W 2.042W 3.012W 3.943W 4.865W 5.728W 6.592W 7.402W 75.4% 84.7% 89.9% 92.0% 93.8% 94.7% 95.8% 96.5% VIN=48V VIN=60V VIN=72V FOSC Pout Efficiency FOSC Pout Efficiency FOSC Pout Efficiency 24.8K 39.3K 51.1K 59.8K 66.1K 69.4K 70.0K 68.3K 1.070W 2.073W 3.05W 3.994W 4.933W 5.836W 6.690W 7.542W 74.2% 84.5% 88.0% 90.3% 92.4% 93.5% 94.5% 95.0% 23.9K 38.6K 51.1K 61.3K 69.6K 75.6K 79.5K 81.5K 1.097W 2.120W 3.122W 4.085W 5.063W 5.968W 6.850W 7.723W 73.0% 82.0% 86.5% 89.5% 91.4% 92.7% 92.8% 93.9% 22.8K 37.3K 50.1K 61.0K 70.3K 77.8K 98.7K 88.0K 1.111W 2.157W 3.176W 4.165W 5.141W 6.062W 6.980W 7.847W 70.1% 80.9% 86.5% 89.0% 90.4% 91.4% 92.3% 92.8% Schottky Diode Selection Table VR 20V 30V 40V 50V 60V 70V 80V 90V 100V 1A 1N5817 1N5818 1N5819 SS32 SS33 SS34 SS35 SS36 SS37 SS38 SS39 SS310 3A 1N5820 1N5821 1N5822 SK32 SK33 SK34 SK35 SK36 SK37 SK38 SK39 S310 Rev 1.0 MBR320 MBR330 MBR340 MBR350 MBR360 SR302 SR303 SR304 SR305 SR306 SR307 SR308 SR309 SR310 www.xlsemi.com 7 XLSEMI Preliminary Datasheet 80V 0.5A High Efficiency Buck PFM LED Constant Current Driver XL8001 Package Information SOP8 Package Mechanical Dimensions Rev 1.0 www.xlsemi.com 8