XL6008 400KHz60V3ASwitchingCurrentBoost/ Buck-Boost/ InvertingDC/DCConverter FeaturesGeneral Description Wide 3.6V to 32V Input Voltage Range Positive or Negative OutputVoltage Programming with a Single Feedback Pin Current Mode Control Provides Excellent Transient Response The XL6008 regulator is a wide input range, current mode, DC/DC converter which is capableofgeneratingeitherpositiveor negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. The XL6008 built in N-channel powerMOSFETandfixedfrequency oscillator, current-mode architecture results in stable operation over a wide range of supply and output voltages. 1.25V reference adjustable version Fixed 400KHz Switching Frequency Maximum 3A Switching Current SW PIN Built in Over Voltage Protection Excellent line and load regulation EN PIN TTL shutdown capability Internal Optimize Power MOSFET The XL6008 regulator is special design for portable electronic equipment. High efficiency up to 92% Built in Frequency Compensation Built in Soft-Start Function Built in Thermal Shutdown Function Built in Current Limit Function Available in TO252-5L package Applications AutomotiveandIndustrialBoost/ Buck-Boost / InvertingConverters Portable Electronic Equipment Figure1. Package Type of XL6008 Rev 1.20755-82543821 1 XL6008 400KHz60V3ASwitchingCurrentBoost/ Buck-Boost/ InvertingDC/DCConverter Pin Configurations Figure2. Pin Configuration of XL6008 (Top View) Table 1 Pin Description Pin NumberPin NameDescription 1GND EN Ground Pin. Enable Pin. Drive EN pin low to turn off the device, drive it high to turn it on. Floating is default high. 2 3 SWPower Switch Output Pin (SW). Supply Voltage Input Pin. XL6008 operates from a 3.6V to 32V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. 4 5 VIN FB Feedback Pin (FB). The feedback threshold voltage is 1.25V. Rev 1.20755-82543821 2 XL6008 400KHz60V3ASwitchingCurrentBoost/ Buck-Boost/ InvertingDC/DCConverter Function Block Figure3. Function Block Diagram of XL6008 TypicalApplication Circuit Figure4. XL6008 Typical Application Circuit (Boost Converter) Rev 1.20755-82543821 3 Value -0.3 to 36 Unit VInput Voltage Feedback Pin Voltage VFB -0.3 to Vin -0.3 to Vin -0.3 to 60 V EN Pin Voltage VEN V Output Switch Pin Voltage Power Dissipation VOutput PD V Internally limitedmW Thermal Resistance (TO252-5L) (Junction toAmbient, No Heatsink, FreeAir) Operating Junction Temperature Storage Temperature RJA 50ºC/W TJ -40 to 125 -65 to 150 260 ºC ºC ºC V TSTG TLEADLead Temperature (Soldering, 10 sec) ESD (HBM)2000 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 1.20755-82543821 4 XL6008 400KHz60V3ASwitchingCurrentBoost/ Buck-Boost/ InvertingDC/DCConverter Ordering Information Order Information XL6008E1 Marking ID XL6008E1 Package Type TO252-5L Packing Type SuppliedAs 2500 Units on Tape unless otherwise specified. a SymbolParameterTest ConditionMin.Typ.Max.Unit System parameters test circuit figure4 Feedback Voltage Vin = 12V to 16V, Vout=18V VFB1.2131.251.287 92 V Iload=0.1Ato 1A Vin=12V ,Vout=18.5V Iout=1A Efficiencyŋ--% Electrical Characteristics (DC Parameters) Vin = 12V, GND=0V, Vin Iout=0.5A, T = a 25℃; the others floating unless otherwise specified. ParametersSymbol Vin Test ConditionMin.Typ.Max.Unit Input operation voltage Shutdown Supply Current 3.632V ISTBYV=0V EN 70100uA VEN=2V, VFB=Vin Quiescent Supply CurrentIq2.55mA Oscillator Frequency Switch Current Limit Fosc IL 320400 3 480Khz A VFB=0 Vin=12V, Output Power NMOS EN Pin Threshold Rdson VEN 110120mohm I=3A SW High (Regulator ON) Low (Regulator OFF) 1.4 0.8 V IH IL VEN=2V (ON) VEN=0V (OFF) 3 3 10 10 uA uA % ENPinInputLeakage Current Max. Duty CycleDMAXV=0V FB 90 Rev 1.20755-82543821 5 XL6008 400KHz60V3ASwitchingCurrentBoost/ Buck-Boost/ InvertingDC/DCConverter Schottky Diode Selection Table CurrentSurfaceThroughVR (The same as system maximum input voltage) MountHole 20V30V40V50V60V 1A 3A √1N58171N58181N5819 √ √ 1N5820 MBR320 SK32 1N5821 MBR330 SK33 1N5822 MBR340MBR350 SK34SK35 MBR360 SK36 √ √30WQ03 31DQ03 SR303 30WQ0430WQ05 31DQ0431DQ05 √ √SR302SR304SR305SR306 Typical SystemApplication– Boost (Output 18.5V/1A) Figure5. XL6008 Typical System Application (Boost Converter) Rev 1.20755-82543821 6 XL6008 400KHz60V3ASwitchingCurrentBoost/ Buck-Boost/ InvertingDC/DCConverter Typical SystemApplication – SEPIC Buck-Boost (Input 10V~30V, Output 12V/2A) Figure6. XL6008 Typical System Application (SEPIC Buck-Boost Converter) Typical SystemApplication for Inverting Converter – SEPIC Inverting Topology (Input 10V~30V, Output + -12V/0.6A) VOUT -12V C OUT 220uf/50VL1C D1 1N5822 CDC22uf/50V VOUT +12V。