XL1583原厂规格书（2014版）

3A 380KHz 23V Buck DC to DC Converter XL1583 1 Features „ Wide 3.6V to 23V Input Voltage Range „ Output Adjustable from 1.222V to 21V „ Maximum Duty Cycle 100% „ Minimum Drop Out 0.6V „ Fixed 380KHz Switching Frequency „ 3A Constant Output Current Capability „ Internal Optimize Power MOSFET „ High efficiency „ Excellent line and load regulation „ TTL shutdown capability „ EN pin with hysteresis function „ Built in thermal shutdown function „ Built in current limit function „ Built in output short protection function „ Available in SOP8 package Applications „ LCD Monitor and LCD TV „ Digital Photo Frame „ Set-up Box „ ADSL Modem „ Telecom / Networking Equipment General Description The XL1583 is a 380KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator. The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. An enable function, an over current protection function is built inside. When short protection function happens, the operation frequency will be reduced from 380KHz to 80KHz. An internal compensation block is built in to minimize external component count. Figure1. Package Type of XL1583 Administrator 附注 原厂代理商: 深圳市森利威尔电子有限公司 联系人：黄先生 手机：13760325070 QQ：2355368872 欢迎咨询,竭诚服务 3A 380KHz 23V Buck DC to DC Converter XL1583 Rev 1.0 www.xlsemi.com 2 Pin Configurations XL1583 1 3 5 2 4 FB NC SW VIN GND 6 7 8 NC EN NC Figure2. Pin Configuration of XL1583 (Top View) Table 1 Pin Description Pin Number Pin Name Description 1,6,8 NC No Connected. 2 VIN Supply Voltage Input Pin. XL1583 operates from a 3.6V to 23V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. 3 SW Power Switch Output Pin (SW). Output is the switch node that supplies power to the output. 4 GND Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky Diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL1583. 5 FB Feedback Pin (FB). Through an external resistor divider network, Feedback senses the output voltage and regulates it. The feedback threshold voltage is 1.222V. 7 EN Enable Pin. Drive EN pin low to turn off the device, drive it high to turn it on. Floating is default high. 3A 380KHz 23V Buck DC to DC Converter XL1583 Rev 1.0 www.xlsemi.com 3 Function Block Figure3. Function Block Diagram of XL1583 Typical Application Circuit Figure4. XL1583 Typical Application Circuit 12V-5V/3A 3A 380KHz 23V Buck DC to DC Converter XL1583 Rev 1.0 www.xlsemi.com 4 Ordering Information Part Number Marking ID Lead Free Lead Free Packing Type XL1583E1 XL1583E1 Tube Package Temperature Range XL1583TRE1 XL1583E1 Tape & Reel XLSEMI Pb-free products, as designated with “E1” suffix in the par number, are RoHS compliant. Absolute Maximum Ratings（Note1） Parameter Symbol Value Unit Input Voltage Vin -0.3 to 28 V Feedback Pin Voltage VFB -0.3 to Vin V EN Pin Voltage VEN -0.3 to Vin V Output Switch Pin Voltage VOutput -0.3 to Vin V Power Dissipation PD Internally limited mW Thermal Resistance (SOP8) (Junction to Ambient, No Heatsink, Free Air) RJA 100 ºC/W Operating Junction Temperature TJ -40 to 125 ºC Storage Temperature TSTG -65 to 150 ºC Lead Temperature (Soldering, 10 sec) TLEAD 260 ºC ESD (HBM) 2000 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. 3A 380KHz 23V Buck DC to DC Converter XL1583 Rev 1.0 www.xlsemi.com 5 XL1583 Electrical Characteristics Ta = 25℃;unless otherwise specified. Symbol Parameter Test Condition Min. Typ. Max. Unit System parameters test circuit figure4 VFB Feedback Voltage Vin = 7V to 25V, Vout=5V Iload=0.2A to 3A 1.186 1.222 1.258 V Efficiency ŋ Vin=12V ,Vout=5V Iout=3A - 89 - % Electrical Characteristics (DC Parameters) Vin = 12V, GND=0V, Vin & GND parallel connect a 220uf/50V capacitor; Iout=500mA, Ta = 25℃; the others floating unless otherwise specified. Parameters Symbol Test Condition Min. Typ. Max. Unit Input operation voltage Vin 3.6 23 V Shutdown Supply Current ISTBY VEN=0V 60 200 uA Quiescent Supply Current Iq VEN =2V, VFB =Vin 3 5 mA Oscillator Frequency Fosc 323 380 437 Khz Switch Current Limit IL VFB =0 4.7 A EN Pin Threshold VEN High (Regulator ON) Low (Regulator OFF) 1.4 0.8 V IH VEN =2V (ON) 1 15 uA EN Pin Input Leakage Current IL VEN =0V (OFF) 1 15 uA Max. Duty Cycle DMAX VFB=0V 100 % 3A 380KHz 23V Buck DC to DC Converter XL1583 Rev 1.0 www.xlsemi.com 6 Test Circuit and Layout guidelines Figure5. Standard Test Circuits and Layout Guides Select R1 to be approximately 2K, use a 1% resistor for best stability. C1 and CFF are optional; in order to increase stability and reduce the input power line noise, CIN and C1 must be placed near to VIN and GND; For output voltages greater than approximately 10V, an additional capacitor CFF is required. The compensation capacitor is typically between 100 pf and 33 nf, and is wired in parallel with the output voltage setting resistor, R2. It provides additional stability for high output voltage, low input-output voltages, and/or very low ESR output capacitors, such as solid tantalum capacitors. CFF=1/(31*1000*R2); This capacitor type can be ceramic, plastic, silver mica, etc. (Because of the unstable characteristics of ceramic capacitors made with Z5U material, they are not recommended.) 3A 380KHz 23V Buck DC to DC Converter XL1583 Rev 1.0 www.xlsemi.com 7 Schottky Diode Selection Table Current Surface Mount Through Hole VR (The same as system maximum input voltage) 20V 30V 40V 50V 60V 1A √ 1N5817 1N5818 1N5819 √ 1N5820 1N5821 1N5822 √ MBR320 MBR330 MBR340 MBR350 MBR360 √ SK32 SK33 SK34 SK35 SK36 √ 30WQ03 30WQ04 30WQ05 √ 31DQ03 31DQ04 31DQ05 3A √ SR302 SR303 SR304 SR305 SR306 3A 380KHz 23V Buck DC to DC Converter XL1583 Rev 1.0 www.xlsemi.com 8 Typical System Application for 12V ~ 5V/3A Version Figure6. XL1583 System Parameters Test Circuit (12V ~ 5V/3A) Typical System Application for 12V ~ 3.3V/3A Figure7. XL1583 System Parameters Test Circuit (12V ~ 3.3V/3A) 3A 380KHz 23V Buck DC to DC Converter XL1583 Rev 1.0 www.xlsemi.com 9 Package Information SOP8 Package Mechanical Dimensions