FEATURES ● Efficiency up to 96% ● Operating temperature range: -40°C ~ +85°C ● Pin-out compatible with LM78XX linears ● Short circuit protection, thermal shutdown ● Low ripple and noise ● Sip package, meet UL94-V0 ● Low temperature rise ● Industry standard pinout ● Supporting negative output perfectly K78XX-500R2 Series WIDE INPUT NON-ISOLATED & REGULATED SINGLE OUTPUT Patent Protection PART NUMBER SYSTEM RoHS APPLICATIONS K78XX-500R2 series high efficiency switching regulators are ideally suited to replace 78xx linear regulators and are pin compatible. K78XX-500R2 Output Current Output Voltage Product Series SELECTION GUIDE Input Voltage(VDC) Part Number Efficiency (%,max) Nominal Nominal Ouput Voltage (VDC) Ouput Current (mA) Vin(Min) Vin (Max) 12 4.75-28 1.5 500 77 66 12 *4.75-25 -1.5 -400 66 64 12 4.75-28 1.8 500 81 69 12 *4.75-25 -1.8 -400 70 68 12 4.75-28 2.5 500 87 76 12 *4.75-25 -2.5 -400 73 73 24 4.75-28 3.3 500 91 81 12 *4.75-25 -3.3 -400 74 78 24 6.5-32 5.0 500 94 86 K7801-500R2 K78X2-500R2 K7802-500R2 K7803-500R2 K7805-500R2 K78X6-500R2 K7809-500R2 K7812-500R2 K7815-500R2 12 6.5-27 -5.0 -400 78 83 24 8-32 6.5 500 94 87 12 6.5-25 -6.5 -300 82 84 24 11-32 9.0 500 95 91 12 7.0-23 -9.0 -200 85 86 24 15-32 12 500 95 92 12 7-20 -12 -200 83 87 24 18-32 15 500 96 93 12 7-17 -15 -200 81 87 INPUT SPECIFICATIONS Item Test Conditions No-load Input Power Input Voltage Range Min. Typ. Max. Unit -- 0.12 0.256 W Reverse Polarity Input Forbidden Input Filter Capacitance Filter（1μF） OUTPUT SPECIFICATIONS Item Min. Typ. Max. Output Voltage accuracy Test Conditions 100% load，input voltage range -- ±2 ±3 Line Regulation Input voltage range -- ±0.2 ±0.4 The copyright and authority for the interpretation of the products are reserved by MORNSUN K78XX-500R2 A/1-2012 Unit % Page 1 of 6 -- ±0.4 ±0.6 280 330 450 KHz -- -- 3000 mA -- -- ±0.02 %/°C Positive output -- 20 30 Negative output -- 20 35 -- 150 ℃ 0.5 1.8 W Load Regulation From 10% to 100% full load Switching Frequency 100% load, input Voltage Range Output Current Limit Temperature Drift -40℃～+85 ℃ Ripple & Noise* 20MHz bandwidth (refer to figure 5) mVp-p Over Temperature Protection IC inside -- Short circuit input power Input Voltage Range -- Short circuit protection Continuous, automatic recovery Max. Capacitive Load Positive output -- -- 1000 Negative output -- -- 680 µF Note:* Ripple and noise tested by “parallel cable” method. See detailed operation instructions at Testing of Power Converter section, application notes. COMMON SPECIFICATIONS Item Test Conditions Min. MIL-HDBK-217F@25℃ MTBF Typ. 2000 Max. -- Case material Unit K hours -- Plastic(UL94-V0) Dimensions mm 11.60*7.50*10.20 Weight -- 2.0 -- g Min. Typ. Max. Unit % ENVIRONMENTAL SPECIFICATIONS Item Test Conditions Storage Humidity Non condensing Operating Temperature Power derating (above 71℃) Storage Temperature -- -- 95 -40 -- 85 -55 -- 125 The Max. Case Temperature Operating temperature curve range -- -- 100 Lead Temperature 1.5mm from case for 10 seconds -- -- 300 Cooling °C Free air convection EMC SPECIFICATIONS EMI CE CISPR22/EN55022 CLASS B （External Circuit Refer to Figure 1-② or Figure 3 ） RE CISPR22/EN55022 CLASS B （External Circuit Refer to Figure 1-② or Figure 3） ESD IEC/EN 61000-4-2 Contact ±4KV RS IEC/EN 61000-4-3 10V/m perf. Criteria A IEC/EN 61000-4-4 ±2KV perf. Criteria B （External Circuit Refer to Figure 1-①） IEC/EN 61000-4-4 ±4KV perf. Criteria B（External Circuit Refer to Figure 3） Surge IEC/EN 61000-4-5 ±2KV perf. Criteria B（External Circuit Refer to Figure 1-①or Figure 3） CS IEC/EN 61000-4-6 3Vr.ms perf. Criteria A Voltage dips、short and interruptions immunity IEC/EN 61000-4-29 0%-70% perf. Criteria B EFT EMS perf. Criteria B EMC RECOMMENDED CIRCUIT Recommended external circuit parameters: FUSE LDM1 LDM2 V in 1 EUT Components 3 FUSE + MOV TVS C0 C3 C1 2 GND C2 MOV GND ① Standard Parameter Vout ② (Figure 1) EMC Recommended Circuit Choose according to practical input current 10D560 LDM1 82μH TVS SMCJ36A C0 120μF/50V Note: In Figure 1,part ① is EMS recommended external circuit, part ② is EMI recommended external circuit. Choose according to requirements. C3 4.7µF/50V The copyright and authority for the interpretation of the products are reserved by MORNSUN K78XX-500R2 A/1-2012 Page 2 of 6 EMC RECOMMENDED CIRCUIT PCB LAYOUT (Figure 2) EMC MODULE APPLICATION CIRCUIT FUSE 1 +Vin +Vin NC +Vin Vout FT-A /BX1D FS-A0 1D -Vin 3 E UT NC NC +Vo NC +Vo -Vin -Vo -Vin -Vo C1 2 C2 GND (Figure 3) EMC MODULE RECOMMENDED CIRCUIT PCB LAYOUT (Figure 4) TYPICAL APPLICATION CIRCUIT 1 +Vin C1 K78XX-500R2 3 2 1 +Vin +Vout K78XX-500R2 C1 C2 GND 3 2 -Vout C2 GND GND GND (Figure 6) Negative output application circuit (Figure 5) Positive output application circuit +Vin +Vout 1 K78XX-500R2 3 C3 GN D LD M 2 C4 -Vout 1 K78XX -500R2 2 C1 GND 3 C2 (Figure 7) Positive and Negative output parallelling application circuit EXTERNAL CAPACITOR TABLE Part Number C1,C3 (Ceramic Capacitor) C2,C4 (Ceramic Capacitor) K7801-500R2 10μF/6.3V K78X2-500R2 10μF/6.3V K7802-500R2 10μF/6.3V K7803-500R2 K7805-500R2 10μF/6.3V 10μF/50V 10μF/10V K78X6-500R2 10μF/16V K7809-500R2 10μF/16V K7812-500R2 10μF/25V K7815-500R2 10μF/25V Note： 1. When the products used as negative output and the input-voltage under (Vin-min+2V),C1 and C2 must be added in the circuit, and they should be placed as near as the products' footprints. Others apply to the application-environment . 2. The capacitance of C1,C2 sees external capacitor table, it can be increased properly if required, and tantalum or low ESR electrolytic capacitors may also suffice. 3. When the products used as the circuit like figure 7,an inductor named as LDM up to 10μH is recommended in the circuit to reduce the mutual interference. , 4. For the product of output voltage is below 3.3V or at 3.3V, if the input voltage of model s negative output is less than 4.85V, The output need to add a dummy load of not less than 5mA. 5. Cannot use in parallel for output and hot swap for input. The copyright and authority for the interpretation of the products are reserved by MORNSUN K78XX-500R2 A/1-2012 Page 3 of 6 TEST CONFIGURATIONS (TA=25°C) 1.Efficiency and Output Voltage Ripple Test 25.4mm 25.4mm 12.7mm 1μ F 2 (3 ) C1 Vout Copper s tr ip C2 10μ F Ceramic Tantalum S cope Loa d DC /DC 3(2) Co nv erter 1 2.54 mm + Vin GND Copper str ip (Figure 8) 2.Start-up and Load Transient Response Test 50.8 mm DC/DC 3 ( 2 ) Co n v e rte r 2 (3) C1 Copper strip Vout S cope C2 Load 1 2. 54 mm +Vin GND Copper strip (Figure 9) OUTPUT RIPPLE REDUCTION 1 L DC/DC 3(2) Vout Converter 2(3) C1 C2 22μ F Loa d +Vin GND To reduce output ripple, it is recommended to add a LC filter in output port. L: Recommended parameter 10μH ~ 47μH. (Figure 10) TYPICAL DERATING CURVE Temperat ure Derating Graph Operating Temperature( C ) TYPICAL CHARACTER CURVE Positive output character curve Ripple VS Input Voltage curve (Full Load) 100 95 90 85 80 75 70 65 60 55 50 Efficiency(%) K7801-500R2 K7802-500R2 K78X2-500R2 K7803-500R2 K7805-500R2 K78X6-500R2 K7809-500R2 K7812-500R2 K7815-500R2 Ripple(mV) Efficiency VS Input Voltage curve (Full Load) 40 36 32 28 24 20 16 12 8 4 0 K7801-500R2 K7802-500R2 K78X2-500R2 K7803-500R2 K7805-500R2 K78X6-500R2 K7809-500R2 K7812-500R2 K7815-500R2 4.75 4.75 6 9 12 15 18 21 24 Input Voltage(V) 26 28 30 32 The copyright and authority for the interpretation of the products are reserved by MORNSUN 6 9 12 15 18 21 24 Input Voltage(V) 26 K78XX-500R2 28 30 32 A/1-2012 Page 4 of 6 100 95 40 36 32 90 85 80 K7801-500R2 K7802-500R2 K78X2-500R2 K7803-500R2 K7805-500R2 K78X6-500R2 K7809-500R2 K7812-500R2 K7815-500R2 75 70 65 60 Ripple(mV) Efficiency(%) Ripple VS Output Load curve (Vin=Vin-nominal) Efficiency VS Output Load curve (Vin=Vin-nominal) 28 K7801-500R2 K7802-500R2 K78X2-500R2 K7803-500R2 K7805-500R2 K78X6-500R2 K7809-500R2 K7812-500R2 K7815-500R2 24 20 16 12 8 4 55 50 0 10 20 30 40 50 60 70 80 90 10 100 20 30 Total Output Current(%) 40 50 60 70 80 Total Output Current(% ) 90 100 Negative output character curve Efficiency VS Input Voltage curve (Full Load) 100 95 90 85 80 75 70 65 60 55 50 Efficiency(%) K7801-500R2 K7802-500R2 K78X2-500R2 K7803-500R2 K7805-500R2 K78X6-500R2 K7809-500R2 K7812-500R2 K7815-500R2 4.75 6 9 12 15 18 21 Input Voltage(V) 24 26 Ripple(mV) Ripple VS Input Voltage curve (Full Load) 28 K7801-500R2 K7802-500R2 K78X2-500R2 K7803-500R2 K7805-500R2 K78X6-500R2 K7809-500R2 K7812-500R2 K7815-500R2 30 40 50 60 70 80 Total Output Current(% ) 90 Ripple(mV) Efficiency(%) 100 95 90 85 80 75 70 65 60 55 50 20 K7801-500R2 K7802-500R2 K78X2-500R2 K7803-500R2 K7805-500R2 K78X6-500R2 K7809-500R2 K7812-500R2 K7815-500R2 4.75 Efficiency VS Output Load curve (Vin=Vin-nominal) 10 40 36 32 28 24 20 16 12 8 4 0 9 12 15 18 21 Input Voltage(V) 24 26 28 Ripple VS Output Load curve (Vin=Vin-nominal) 40 36 32 28 24 20 16 12 8 4 0 K7 801-500R2 K7 802-500R2 K7 8X2-500R2 K7 803-500R2 K7 805-500R2 K7 8X6-500R2 K7 809-500R2 K7 812-500R2 K7 815-500R2 10 100 6 20 30 40 50 60 70 80 Total Output Current(% ) 90 100 OUTLINE DIMENSION & FOOTPRINT DETAILS RECOMMENDED FOOTPRINT (Front View ) 10.20 [0.402] 0.50[0.020] MECHANICAL DIMMENSIONS 1 2 3 Ф1.00[0.039] 0.50[0.020] 5.08[0.200] 11.60 [0.457] Note: Unit:mm[inch] Pin section tolerances:± 0.10mm[± 0.004inch] General tolerances:± 0.25mm[± 0.010inch] FO OTPRINT DETAILS Positive Output Negative Output 1 +Vin +Vin 2 GND -Vout 3 +Vout GND 12.40 [0.488] 1 2 3 16.90[0.665] 9.60 [0.378] (Bottom View ) Pin TUBE OUTLINE DIMENSIONS 0.30[0.012] 7.50 [0.295] 1.80 4.10 [0.071] [0.161] Note: grid 2.54*2.54mm. 4.90[0.193] Note: Unit: mm[inch] General tolerance： ±0.50mm[±0.020inch] L=530mm[20.866 inch] Packaging quantity:43pcs L=220mm[8.661inch] Packaging quantity:17pcs Short tube inner packaging dimensions: L*W*H=255*170*80mm; Short tube outer packaging dimensions(with six inner packaging boxes): L*W*H=375*280*270mm; Long tube inner packaging dimensions: L*W*H=580*200*100mm; Long tube outer packaging dimensions(with two inner packaging boxes)： L*W*H=600*215*220mm; Long tube outer packaging dimensions(with three inner packaging boxes)： L*W*H=600*215*325mm. The copyright and authority for the interpretation of the products are reserved by MORNSUN K78XX-500R2 A/1-2012 Page 5 of 6 Note: 1. Max. Capacitive Load tested at input voltage range and full load. 2. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 3. In this datasheet, all the test methods of indications are based on our corporate standards. 4. All characteristics are for listed model, non-standard models may perform differently, please contact our technical person for more detail. 5. Contact us for your specific requirement. 6. Specifications subject to change without prior notice. MORNSUN Science & Technology Co.,Ltd. Address: No. 5, Kehui St. 1, Kehui development center, Science Ave., Guangzhou Science City, Luogang district, Guangzhou,P.R.China. Tel: 86-20-38601850 Fax:86-20-38601272 Http://www.mornsun-power.com The copyright and authority for the interpretation of the products are reserved by MORNSUN K78XX-500R2 A/1-2012 Page 6 of 6