LM2596S-5.0

HUAXUANYANG HXY LM2596S ELECTRONICS CO.,LTD 3.5A 150KHZ PWM Buck DC/DC Converter General Description The LM2596S is a series of easy to use fixed and adjustable step-down (buck) switch-mode voltage regulators. These devices are available in fixed output voltage of 3.3V, 5V, 12V and an adjustable output version. Both versions are capable of driving a 3.5A load with excellent line and load regulation. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator. The output voltage is guaranteed to ±3% tolerance under specified input voltage and output load conditions. The oscillator frequency is guaranteed to ±15%. External shutdown is included, featuring typically 80 μA standby current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions. 1 2 3 4 5 ON/OFF 4 Feedback 3 Gnd 2 Output 1 Vin 5 TO263-5L Features Name Description • • • • • • • • • • • Vin Input supply voltage Output Switching output Gnd Ground Feedback Output voltage feedback ON/OFF ON/OFF shutdown Active is “Low” or floating 3.3V, 5V, 12V and adjustable output versions Output adjustable from 1.23v to 37V Fixed 150KHz frequency internal oscillator Guaranteed 3.5A output load current Input voltage range up to 45V Low power standby mode, IQ typically 80 μA TTL shutdown capability Excellent line and load regulation Requires only 4 external components High efficiency Thermal shutdown and current limit protection Pin Descriptions Applications • • • • • • • Simple High-efficiency step-down regulator On-card switching regulators Positive to negative converter LCD monitor and LCD TV DVD recorder and PDP TV Battery charger Step-down to 3.3V for microprocessors Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com HUAXUANYANG HXY LM2596S ELECTRONICS CO.,LTD 3.5A 150KHZ PWM Buck DC/DC Converter Functional Block Diagram Functional Block Diagram of LM2596S Typical Application (Fixed Output Voltage Versions) LM9S 7\SLFDO$SSOLFDWLRQRI LM9S Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com HUAXUANYANG HXY LM2596S ELECTRONICS CO.,LTD 3.5A 150KHZ PWM Buck DC/DC Converter Absolute Maximum Ratings Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Parameter Value Unit -0.3 to 45 V Feedback VFB pin voltage -0.3 to Vin+0.3 V ON/OFF Pin voltage -0.3 to Vin+0.3 V Output pin voltage -0.3 to Vin+0.3 V -1 V Internally limited W Operating Temperature Range -40 to +125 |C Storage Temperature -65 to +150 |C Lead Temperature (Soldering, 10 sec) 200 |C ESD(HM) 2000 V Thermal Resistance-Junction to Ambient(RșJA) 85 ºC / W Thermal Resistance-Junction to Case(RșJC) 45 ºC / W Supply Voltage Vin Output Voltage to Ground (Steady State) Power Dissipation Electrical Characteristics (All Output Voltage Versions) Unless otherwise specified, Ta = 25ഒ. Symbol Parameter Conditions Min. Typ. Max. Unit Ib Feedback bias current Adjustable only, VFB=1.3V 10 50 nA IQ Quiescent current VFB=12V force driver off 5 10 mA ISTBY Standby quiescent current ON/OFF=5V, VIN=36V 80 200 uA FOSC Oscillator frequency 150 173 KHz VSAT Saturation voltage IOUT=3.5A 1.2 1.4 V ICL Current Limit Peak Current (VFB=0V) 4.5 5.5 A IL IL Output leakage current Output=0V (VFB=12V) 50 uA Output leakage current Output=-1V (VIN=36V) 2 30 mA VIL ON/OFF pin logic input Low (Regulator ON) 1.3 1.6 V 127 Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com HUAXUANYANG HXY LM2596S ELECTRONICS CO.,LTD VIH Threshold voltage IH IL ON/OFF pin input current ˥JC ˥JA LM2596 S-$'- LM2596 S-9 LM2596 S-9 High (Regulator OFF) 2.0 Vout: Output Voltage ˤ: Efficiency Vout: Output Voltage ˤ: Efficiency Vout: Output Voltage ˤ: Efficiency ˤ: Efficiency 1.3 V VLOGIC=2.5V(Regulator OFF) 5 15 uA VLOGIC=0.5V(Regulator ON) 0.02 5 uA Thermal Resistance Junction to Case Thermal Resistance Junction to Ambient (Note1) LM2596 Vout: Output Voltage S-129 3.5A 150KHZ PWM Buck DC/DC Converter 11Vื9,1 ื59 $ื,/2$' ื.5$9287IRU9 1.193 VIN=12V,VOUT=9V,ILOAD=3.5A 4.75Vื9,1ื59 $ื,/2$' ื.5$ .5$ 3.168 ื.5$ VIN=25V, ILOAD=3.5A C/W 23 O C/W 1.23 1.267 3.3 4.8 5.0 3.432 5.0 90 V % 5.2 83 11.5 V % 76 VIN=12V, ILOAD=3.5A 15V ื 9,1 ื59 $ ื,/2$' O 88 VIN=12V, ILOAD=3.5A 7V ื 9,1 ื59 $ ื,/2$' ื 3.5 V % 12.5 V % Specifications with boldface type are for full operationg temperature range, the other type are for TJ=25OC. Note1: Thermal resistance with copper area of approximately 3 in2. Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com HUAXUANYANG HXY ELECTRONICS CO.,LTD LM2596S 3.5A 150KHZ PWM Buck DC/DC Converter Typical Performance Characteristics Figure 1. Output Voltage vs. Temperature Figure 3. Output Saturation Characteristics Shenzhen HuaXuanYang Electronics CO.,LTD Figure 2. Switching Frequency vs. Temperature Figure 4. Quiescent Current vs. Temperature www.hxymos.com HUAXUANYANG HXY ELECTRONICS CO.,LTD Figure 5. ON/OFF Pin Voltage LM2596S 3.5A 150KHZ PWM Buck DC/DC Converter Figure 6. ON/OFF Pin Sink Current Figure 7. Output Saturation Characteristics Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com HUAXUANYANG HXY LM2596S ELECTRONICS CO.,LTD 3.5A 150KHZ PWM Buck DC/DC Converter Typical Application Circuit LM2596S3.3/5.0/12V Typical Application of LM2596S For 3.3V,5.0V,12V LM2596S-ADJ Typical Application of LM2596S For ADJ Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com HUAXUANYANG HXY ELECTRONICS CO.,LTD LM2596S 3.5A 150KHZ PWM Buck DC/DC Converter Package Information (TO263-5L) Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com HUAXUANYANG HXY LM2596S ELECTRONICS CO.,LTD 3.5A 150KHZ PWM Buck DC/DC Converter Attention ■ Any and all HUA XUAN YANG ELECTRONICS products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your HUA XUAN YANG ELECTRONICS representative nearest you before using any HUA XUAN YANG ELECTRONICS products described or contained herein in such applications. ■ HUA XUAN YANG ELECTRONICS assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all HUA XUAN YANG ELECTRONICS products described or contained herein. ■ Specifications of any and all HUA XUAN YANG ELECTRONICS products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer’s products or equipment. 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HUA XUAN YANG ELECTRONICS believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. ■ Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the HUA XUAN YANG ELECTRONICS product that you intend to use. Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com