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| CYStech Electronics Corp. 150kHz, 3A PWM Buck DC/DC Converter Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 1/12 LM2596-XXE5/F5 Description The LM2596-XXE5/F5 series of regulators are monolithic ICs that provide all active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltage of 3.3V, 5V, 12V and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixedfrequency oscillator. The LM2596-XXE5/F5 series operates at a switching frequency of 150kHz, thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in standard 5-lead TO-220 and TO-263 packages with several different lead bend options. A standard series of inductors are available from several different manufacturers optimized for use with the LM2596-XXE5/F5 series. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed 4% tolerance on output voltage under specified input voltage and output load conditions, and 15% on the oscillator frequency. External shutdown is included, featuring 80A 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. Features 3.3V, 5V, 12V, and adjustable output versions Adjustable version output voltage range, 1.3V to 37V4% max over line and load conditions 150kHz15% fixed switching frequency TTL shutdown capability Operating voltage can be up to 40V Output load current:3A TO220-5L and TO263-5L packages Low power standby mode. Thermal shutdown and current limit protection. High efficiency Built-in switching transistor on chip Requires only 4 external components Use readily available standard inductors Applications Simple high-efficiency step-down (buck) regulator. Positive to negative converter (Buck-Boost). On-card switching regulators. LM2596-XXE5/F5 CYStek Product Specification CYStech Electronics Corp. Pin Assignment Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 2/12 Block Diagram Ordering Information LM2596-XXE5/F5 CYStek Product Specification CYStech Electronics Corp. Absolute Maximum Ratings (Note 1) Parameter Supply Voltage On/Off Pin Input Voltage Feedback Pin Voltage Output Voltage to Ground Power Dissipation Operating Temperature Storage Temperature Operating Voltage ESD Susceptibility (Note 2) Symbol VCC VSD VFB VOUT PD Topr Tstg VOP Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 3/12 Value 45 -0.3 ~ +25 -0.3 ~ +25 -1 Internally Limited -40 ~ +125 -65 ~ +150 +4.5 ~ +40 2000 Unit V V V V W V V Electrical Characteristics (All Output Voltage Versions) Specifications with boldface type are for full operating temperature range, the other type are for TJ=25C. (Unless otherwise specified, VIN=12V for the 3.3V, 5V, and adjustable version and VIN=24V for the 12V version, ILOAD=500mA) Parameter Device parameters Feedback Bias Current Oscillator Frequency Saturation Voltage Max Duty Cycle (ON) Min Duty Cycle(OFF) Current Limit Output Leakage Current Quiescent Current Standby Quiescent Current Ib fO VSAT DC Symbol Test Condition Min Typ Max 50 100 173 173 1.4 1.5 6.9 7.5 50 30 10 200 250 0.6 15 5 Unit Adjustable Version Only, VFB=1.3V (Note 6) 127 110 3.6 3.4 2.0 - 10 150 1.16 100 0 4.5 2 5 80 2 3.5 50 23 1.3 5 0.02 nA KHz V % A A mA mA A /W /W V A IOUT=3A (Note 7, 8) (Note 8) (Note 9) ICL IL IQ ISTBY JC Peak Current ( Note 7, 8) Output=0V (Note 7, 9) Output=-1V(Note 10) (Note 9) ON/OFF pin=5V (Note 10) Junction to Case Junction to Ambient Thermal Resistance ON/OFF Control ON/OFF Pin Logic Input Threshold Voltage ON/OFF Pin Input Current TO-220-5L TO-263-5L TO-220-5L JA (Note11) TO-263-5L VIH VIL IIH IIL Low (Regulator ON) High (Regulator OFF) VLOGIC=2.5V (Regulator OFF) VLOGIC=0.5V (Regulator ON) LM2596-XXE5/F5 CYStek Product Specification CYStech Electronics Corp. Electrical Characteristics (Continued) Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 4/12 Specifications with boldface type are for full operating temperature range, the other type are for TJ=25C. Part No. Parameter Symbol Conditions Min Typ Max (Note 3) (Note 4) Units LM2596-3.3 Output Voltage Efficiency VOUT VOUT VOUT VFB 4.75VVIN40V, 0.2AILOAD3A VIN=12V, ILOAD=3A 7VVIN40V, 0.2AILOAD3A VIN=12V, ILOAD=3A 15VVIN40V, 0.2AILOAD3A VIN=25V, ILOAD=3A 4.5VVIN40V, 0.2AILOAD3A VOUT programmed for 3V VIN=12V, VOUT=3V, ILOAD=3A LM2596-5.0 Output Voltage Efficiency LM2596-12 Output Voltage Efficiency Output LM2596-ADJ Feedback Efficiency 3.168 3.432 3.3 3.135 3.465 73 4.800 5.200 5.0 4.750 5.250 80 11.52 12.48 12.0 11.40 12.60 90 1.180 1.280 1.230 1.168 1.292 77 - V % V % V % V % Note 1 : Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. Note 2 : The human body model is a 100pF capacitor discharged through a 1.5K resistor into each pin. Note 3 : Typical numbers are at 25 and represent the most likely norm. Note 4 : All limits guaranteed at room temperature (standard face type) and at temperature extremes(bold face type). All room temperature limits are 100% production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). Note 5 : External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect switching regulator system performance. Note 6 : The switching frequency is reduced when the second stage current limit is activated. Note 7 : No diode, inductor or capacitor connected to output pin. Note 8 : Feedback pin removed from output and connected to 0V to force the output transistor switch ON. Note 9 : Feedback pin removed from output and connected to +12V for the 3.3V, 5V and adjustable version, and +15V for the 12V version, to force the output transistor switch OFF. Note 10 : VIN=40V. Note 11 : Junction to Ambient thermal resistance. (With copper area of approximately 3 in) LM2596-XXE5/F5 CYStek Product Specification CYStech Electronics Corp. Typical Performance Characteristics (circuit of Figure 2) Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 5/12 LM2596-XXE5/F5 CYStek Product Specification CYStech Electronics Corp. Typical Performance Characteristics(Cont.) Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 6/12 LM2596-XXE5/F5 CYStek Product Specification CYStech Electronics Corp. Typical Performance Characteristics(Cont.) Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 7/12 LM2596-XXE5/F5 CYStek Product Specification CYStech Electronics Corp. Typical Performance Characteristics(Cont.) Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 8/12 LM2596-XXE5/F5 CYStek Product Specification CYStech Electronics Corp. Typical Application Circuit Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 9/12 LM2596-XXE5/F5 CYStek Product Specification CYStech Electronics Corp. TO-263-5L Dimension Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 10/12 Marking: Date Code LM2596 Vout: 3.3V-33 5.0V-50 12V-12 ADJ blank 5-Lead TO-220-5L Plastic Package CYStek Package Code: E5 Style: Pin 1.Vin 2.Vout 3.GND 4.Feedback 5.ON/OFF DIM A b c D E L4 Inches Min. Max. 0.173 0.189 0.030 0.039 0.014 0.020 0.339 0.354 0.386 0.409 0.579 0.602 Millimeters Min. Max. 4.40 4.80 0.76 1.00 0.36 0.50 8.60 9.00 9.80 10.4 14.7 15.3 DIM L5 c1 L e L1 Inches Min. Max. 0.244 0.260 0.049 0.057 0.522 0.561 0.067 REF 0.102 0.114 0.146 0.156 Millimeters Min. Max. 6.20 6.60 1.25 1.45 13.25 14.25 1.70 REF 2.60 2.89 3.71 3.96 Notes: 1.Controlling dimension: millimeter 2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material. 3.If there is any question with packing specification or packing method, please contact your local CYStek sales office. Material: * Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0 LM2596-XXE5/F5 CYStek Product Specification CYStech Electronics Corp. TO-263-5L Dimension Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 11/12 Marking: LM2596 Date Code Vout: 3.3V-33 5.0V-50 12V-12 ADJ blank Style: Pin 1.Vin 2.Vout 3.GND 4.Feedback 5.ON/OFF 5-Lead TO-263-5L Plastic Package CYStek Package Code: F5 DIM A b L4 c L1 E Inches Min. Max. 0.173 0.189 0.026 0.036 0.000 0.012 0.014 0.020 0.090 0.110 0.386 0.409 Millimeters Min. Max. 4.40 4.80 0.66 0.91 0.00 0.30 0.36 0.50 2.29 2.79 9.80 10.4 DIM c2 L2 D e L Inches Min. Max. 0.049 0.057 0.050 REF 0.339 0.354 0.067 REF 0.575 0.622 0 8 Millimeters Min. Max. 1.25 1.45 1.27 REF 8.60 9.00 1.70 REF 14.6 15.8 0 8 Notes: 1.Controlling dimension :millimeter 2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material. 3.If there is any question with packing specification or packing method, please contact your local CYStek sales office. Material: * Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0 Recommended wave soldering condition Product Pb-free devices LM2596-XXE5/F5 Peak Temperature 260 +0/-5 C Soldering Time 5 +1/-1 seconds CYStek Product Specification CYStech Electronics Corp. Recommended temperature profile for IR reflow Spec. No. : C548F5 Issued Date : 2007.12.11 Revised Date : Page No. : 12/12 Profile feature Average ramp-up rate (Tsmax to Tp) Preheat -Temperature Min(TS min) -Temperature Max(TS max) -Time(ts min to ts max) Time maintained above: -Temperature (TL) - Time (tL) Peak Temperature(TP) Time within 5C of actual peak temperature(tp) Ramp down rate Time 25 C to peak temperature Sn-Pb eutectic Assembly 3C/second max. 100C 150C 60-120 seconds 183C 60-150 seconds 240 +0/-5 C 10-30 seconds 6C/second max. 6 minutes max. Pb-free Assembly 3C/second max. 150C 200C 60-180 seconds 217C 60-150 seconds 260 +0/-5 C 20-40 seconds 6C/second max. 8 minutes max. Note : All temperatures refer to topside of the package, measured on the package body surface. Important Notice: * All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek. * CYStek reserves the right to make changes to its products without notice. * CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems. * CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. LM2596-XXE5/F5 CYStek Product Specification |
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