K78XX-1000(L) Series WIDE INPUT NON-ISOLATED & REGULATED SINGLE OUTPUT RoHS Product Program FEATURES ● Efficiency up to 97% ● Operating temperature: -40°C ~ +85°C Input Voltage(VDC) Part Number Nominal ● Pin-out compatible with LM78XX Linear ● Short circuit protection, thermal shutdown Output Efficiency (%)(Typ) Range Voltage (VDC) Current (mA) Vin (min.) Vin (max.) K7801-1000(L) 12 4.75-26 1.5 1000 80 71 K78X2-1000(L) 12 4.75-26 1.8 1000 83 74 ● No heatsink required K7802-1000(L) 12 4.75-28 2.5 1000 88 80 ● Industry standard pinout K7803-1000(L) 24 4.75~28 3.3 1000 90 83 ● MTBF>2,000,000 hours K7805-1000(L) 24 6.5~32 5.0 1000 93 88 K78X6-1000(L) 24 9.0~32 6.5 1000 94 90 K7809-1000(L) 24 12~32 9.0 1000 95 92 K7812-1000(L) 24 16~32 12 1000 96 94 K7815-1000(L) 24 20~32 15 1000 97 94 ● Low ripple and noise ● Micro miniature SIP package APPLICATIONS Add suffix “L” for 90° bend pins, for example: K7805-1000L. The K78xx-1000(L) series high efficiency switching regulators are ideally suited to replace 78xx linear regulators and are pin compatible. Output Specifications The efficiency of up to 97% means that very little Item Test conditions energy is wasted as heat so there is no need for Output voltage accuracy 100% full load any heatsinks with their additional space and Line regulation mounting costs. Load regulation* Ripple & Noise Min. Typ. Max. ±2 ±3 Vin=min. to max. at full load ±0.2 ±0.4 10% to 100% load ±0.4 ±0.6 20MHz bandwidth (refer to figure 3) 25 35 mVp-p 0.5 1.8 W Short circuit input power** Short circuit protection K7805-1000 Thermal shutdown Internal IC junction Switching frequency 100% full load Output current limit Vin= min. to max. (at full load) 330 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 * K78X2-1000 is ±0.75%(Max), 450 Vout:1.5V~3.3V 3000 Vout:5V~15V 2000 5 -40°C ~ +85°C ambient Max capacitance load MORNSUN Science & Technology Co.,Ltd. °C 150 280 Quiescent current Temperature coefficient % Continuous, automatic recovery MODEL SELECTION Output Current Out put Voltage Product Series Units KHz mA 8 mA ±0.02 %/°C 1000 μF Max. Units 95 % ** K7801-1000 is 4W(Max). COMMON SPECIFICATIONS Item Test conditions Min. Typ. Storage humidity Operating temperature Power derating (above 71°C) -40 85 -55 125 Operating case temp. 100 Storage temperature Lead temperature 1.5mm from case for 10 seconds Cooling 300 Free air convection Case material MTBF °C Plastic (UL94-V0) 25℃（MIL-HDBK-217F） Weight The copyright and authority for the interpretation of the products are reserved by MORNSUN 2000 k hours 3.7 g Specifications subject to change without notice. K78XX-1000(L) B/2-2012 Page 1 of 4 TYPICAL CHARECTERISTICS EXTERNAL CAPACITOR TABLE Temperature Derating Graph Part Number Operating Temp.( C ) (figure1) C1 C2 (Ceramic capacitor) (Ceramic capacitor) K7801-1000(L) 10µF/50V 22µF/6.3V K78X2-1000(L) 10µF/50V 22µF/6.3V K7802-1000(L) 10µF/50V 22µF/6.3V K7803-1000(L) 10µF/50V 22µF/6.3V K7805-1000(L) 10µF/50V 22µF/16V K78X6-1000(L) 10µF/50V 10µF/16V K7809-1000(L) 10µF/50V 10µF/16V K7812-1000(L) 10µF/50V 10µF/25V K7815-1000(L) 10µF/50V 10µF/25V TYPICAL APPLICATION CIRCUIT 1 K78XX-1000(L) 3 +Vin C1 +Vo ut C2 2 GN D GN D (figure 2) 1. C1 and C2 are required and should be fitted close to the converter pins. 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. No parallel connection or plug and play. TEST CONFIGURATIONS (TA=25°C) 1 Efficiency and Output Voltage Ripple Test 2 5 .4 mm 2 5 .4 mm 1 2 .7 mm DC/DC Converter Copper strip 1μ F 2 C1 +Vout 3 C2 1 0μ F C e ra m ic Tantalum S cope Lo ad 1 2 .54 mm +Vin GND Copper strip (figure 3) Start-up and Load Transient Response Test 5 0 .8 m m 1 C1 DC/DC Converter 3 2 Copper strip +Vout S cope C2 L oad +Vin 2 .5 4 m m 2 GND Copper strip (figure 4) The copyright and authority for the interpretation of the products are reserved by MORNSUN Specifications subject to change without notice. K78XX-1000(L) B/2-2012 Page 2 of 4 OUTPUT RIPPLE REDUCTION 1 DC/DC Converter 3 L + Vout 2 C1 C2 22μ F Lo ad +Vin GND To reduce output ripple, it is recommended to add a LC filter in output port. L: Recommended param eter 10μH ~ 47μH. (figure 5) CHARACTERISTICS CURVE Efficiency Ripple Ripple VS. Vin(full load) Efficiency VS. Vin(full load) Ripple(mV) Efficiency(%) 30 100 K7801-1000 K7801-1000 90 25 K78X2-1000 K78X2-1000 80 K7802-1000 K7803-1000 70 K7805-1000 K78X6-1000 60 K7802-1000 20 K7803-1000 15 K7805-1000 K78X6-1000 10 K7809-1000 K7809-1000 K7812-1000 50 K7812-1000 5 K7815-1000 K7815-1000 40 4.75 9 11 15 18 22 26 30 0 4.75 Vin(V) 90 11 70 30 50 22 26 30 Vin(V) K7801-1000 K7801-1000 K78X2-1000 K78X2-1000 25 K7803-1000 K7802-1000 K7805-1000 20 K7803-1000 K7805-1000 15 K78X6-1000 K78X6-1000 60 18 Ripple(mV) K7802-1000 80 15 Ripple vs Load(Vin=Vin-nominal) Efficiency VS.Load(Vin=Vin-nominal) Efficiency(%) 100 9 K7809-1000 K7812-1000 K7809-1000 10 K7812-1000 5 K7815-1000 K7815-1000 0 40 50 100 200 300 400 500 600 700 800 900 1000 Load(mA) 50 100 200 300 400 500 600 700 800 9001000 Load(mA) The copyright and authority for the interpretation of the products are reserved by MORNSUN Specifications subject to change without notice. K78XX-1000(L) B/2-2012 Page 3 of 4 OUTLINE DIMENSIONS & FOOTPRINT DETAILS MECHANICAL DIMENSIONS RECOMMENDED FOOTPRINT K78XX K78XX 17.50 [0.689] 0.50[0.020] Ф1.00[0.039] (Front View) 1 2 3 4.10[0.161] K78X X-L 9.00[0.354] 11.50 [0.453] 1 3 2 1 0.30[0.012] 5.08[0.200] Ф1.00[0.039] 2 3 2.15[0.085] 0.50[0.020] Note: grid 2.54*2.54mm. (Bottom View) TUBE OUTLINE DIMENSIONS K78XX K78XX-L K78XX-L 9.00 [0.354] 11.40[0.449] 1 2 3 11.50 [0.453] 4.10[0.161] (Bottom View) FOOTP RINT DETAILS Pin 1 Function +Vin 2 GND 3 +Vout Note: Unit:mm[inch] Pin section tolerances:±0.10mm[±0.004inch] General tolerances:±0.25mm[±0.010inch] 4.20[0.205] 20.40[0.803] 23.40[0.921] 20.60[0.811] 0.50[0.020] 5.08[0.200] (Front View) 27.10[1.067] 0.30[0.012] 19.00[0.748] 17.50[0.689] 11.60[0.457] 11.00[0.433] 6.60[0.260] 16.00[0.630] Note: Unit:mm[inch] General tolerances:±0.50mm[±0.020inch] L=530mm[20.866inch] Devices per tube quantity: 44pcs L=220mm[8.661inch] Devices per tube 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 Note: 1. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. In this datasheet, all the test methods of indications are based on corporate standards. The copyright and authority for the interpretation of the products are reserved by MORNSUN Specifications subject to change without notice. K78XX-1000(L) B/2-2012 Page 4 of 4