联系人：曹中立 电话：１３４２８７０６２２３ ＱＱ：１１５７００８１１５ XL6008 400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Features General Description n n The XL6008 regulator is a wide input range, current mode, DC/DC converter which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. The XL6008 built in N-channel power MOSFET and fixed frequency oscillator, current-mode architecture results in stable operation over a wide range of supply and output voltages. The XL6008 regulator is special design for portable electronic equipment. n n n n n n n n n n n n n n Wide 3.6V to 32V Input Voltage Range Positive or Negative Output Voltage Programming with a Single Feedback Pin Current Mode Control Provides Excellent Transient Response 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 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 n n Automotive and Industrial Boost Buck-Boost / Inverting Converters Portable Electronic Equipment / Figure1. Package Type of XL6008 Rev 1.2 www.xlsemi.com 1 XL6008 400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Pin Configurations Figure2. Pin Configuration of XL6008 (Top View) Table 1 Pin Description Pin Number 1 Pin Name GND 2 EN 3 SW 4 VIN 5 FB Description Ground Pin. Enable Pin. Drive EN pin low to turn off the device, drive it high to turn it on. Floating is default high. Power 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. Feedback Pin (FB). The feedback threshold voltage is 1.25V. Rev 1.2 www.xlsemi.com 2 XL6008 400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Function Block Figure3. Function Block Diagram of XL6008 Typical Application Circuit Figure4. XL6008 Typical Application Circuit (Boost Converter) Rev 1.2 www.xlsemi.com 3 XL6008 400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Ordering Information Package Temperature Range Part Number Lead Free XL6008E1 XL6008TRE1 Marking ID Lead Free XL6008E1 XL6008E1 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 VFB VEN VOutput PD Value -0.3 to 36 -0.3 to Vin -0.3 to Vin -0.3 to 60 Internally limited Unit V V V V mW Input Voltage Feedback Pin Voltage EN Pin Voltage Output Switch Pin Voltage Power Dissipation Thermal Resistance (TO252-5L) (Junction to Ambient, No Heatsink, Free Air) Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec) ESD (HBM) RJA 50 ºC/W TJ TSTG TLEAD -40 to 125 -65 to 150 260 >2000 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 1.2 www.xlsemi.com 4 XL6008 400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter XL6008 Electrical Characteristics Ta = 25℃;unless otherwise specified. Symbol Parameter Test Condition Min. Typ. Max. Unit 1.213 1.25 1.287 V - 92 - % System parameters test circuit figure4 Feedback Voltage VFB Efficiency ŋ Vin = 12V to 16V, Vout=18V Iload=0.1A to 1A Vin=12V ,Vout=18.5V Iout=1A Electrical Characteristics (DC Parameters) Vin = 12V, GND=0V, Vin & GND parallel connect a 220uf/50V capacitor; Iout=0.5A, Ta = 25℃; the others floating unless otherwise specified. Parameters Symbol Test Condition Min. Typ. 3.6 Max. Unit 32 V Input operation voltage Vin Shutdown Supply Current ISTBY VEN=0V 70 100 uA Quiescent Supply Current Iq VEN =2V, VFB =Vin 2.5 5 mA 400 480 Khz Oscillator Frequency Fosc Switch Current Limit IL VFB =0 3 Output Power NMOS Rdson Vin=12V, ISW=3A 110 VEN High (Regulator ON) Low (Regulator OFF) 1.4 0.8 IH VEN =2V (ON) 3 10 uA IL VEN =0V (OFF) 3 10 uA DMAX VFB=0V 90 EN Pin Threshold EN Pin Input Leakage Current Max. Duty Cycle 320 Rev 1.2 A 120 mohm V % www.xlsemi.com 5 XL6008 400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Schottky Diode Selection Table Current 1A 3A Surface Through VR (The same as system maximum input voltage) Mount Hole 20V 30V 40V 50V 1N5817 1N5818 1N5819 √ 60V √ 1N5820 1N5821 1N5822 √ MBR320 MBR330 MBR340 MBR350 MBR360 SK32 SK33 SK34 SK36 30WQ03 30WQ04 30WQ05 31DQ03 31DQ04 31DQ05 SR303 SR304 SR305 √ √ √ √ Typical System Application SR302 SK35 SR306 – Boost (Output 18.5V/1A) Figure5. XL6008 Typical System Application (Boost Converter) Rev 1.2 www.xlsemi.com 6 XL6008 400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Typical System Application – SEPIC Buck-Boost (Input 10V~30V, Output 12V/2A) Figure6. XL6008 Typical System Application (SEPIC Buck-Boost Converter) Typical System Application for Inverting Converter – SEPIC Inverting Topology (Input 10V~30V, Output + -12V/0.6A) Figure7. XL6008 Typical System Application (SEPIC Inverting Converter) Rev 1.2 www.xlsemi.com 7 XL6008 400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Package Information TO252-5L Rev 1.2 www.xlsemi.com 8