WRN78XX-2000(B) Series WIDE INPUT NON-ISOLATED & REGULATED SINGLE OUTPUT Product Program Input Voltage(VDC) Part Number Output (%,Typ) Efficiency Efficiency(%,Typ) Voltage Current Vin Vin (VDC) (MA) (min.) (max.) 4.75-18 1.5 2000 79 76 4.75-18 1.8 2000 81 79 12 4.75-18 2.5 2000 85 83 WRN7803-2000 12 4.75-18 3.3 2000 87 86 WRN7805-2000 12 7-18 5 2000 91 88 WRN786.5-2000 12 8.5-18 6.5 2000 92 91 WRN781.5-2000B 12 4.75-18 1.5 2000 79 76 WRN781.8-2000B 12 4.75-18 1.8 2000 81 79 WRN782.5-2000B 12 4.75-18 2.5 2000 85 83 ◆Low ripple and noise WRN7803-2000B 12 4.75-18 3.3 2000 87 86 ◆Micro miniature SIP3 package WRN7805-2000B 12 7-18 5 2000 91 88 2000 92 91 Nominal Range WRN781.5-2000 12 FEATURES WRN781.8-2000 12 WRN782.5-2000 ◆Efficiency up to 92%,No heatsink required ◆2A large current output ◆Operating temperature : -40°C ~ +85°C ◆Short circuit protection, thermal shutdown WRN786.5-2000B 12 8.5-18 6.5 Add suffix "B" for 90°bend pins, for example: WRN7805-2000B. ◆UL94-V0 requirement ◆Ultra low power loss ◆Industry standard pinout OUTPUT SPECIFICATION SPECIFICATIONS S ◆Pin-out compatible with WRN78xx linear Item Test conditions ◆MTBE>2000,000Hours Output voltage accuracy 100% full load, input voltage range ±2 ±3 Line regulation Vin=min. to max, at full load ±0.5 ±0.75 Load regulation 10% to 100% load ±0.5 ±1.0 Ripple & Noise* 20MHz bandwidth (refer to figure 6) MODEL SELECTION ① ② ③ ④ WR WRN78 N78 05 -2000 (B) ①Product Series ③Output Current ②Output Voltage ④Bend 90°pins Min. Short circuit input power Short circuit protection Thermal shutdown Full load, input voltage range 300 Quiescent current APPLICATIONS Temperature coefficient -40℃ ~ +85℃ ambient Max capacitance load The WRN78xx-2000(B) series switching regulators Max. Units 25 45 mVp-p 0.5 1.8 W 150 ℃ 5000 mA 340 380 KHz 5 10 mA ±0.03 %/℃ 1000 µF *Test ripple and noise by "Parallel cable" method. are ideal replacement for WRN78xx linear regulators.. The efficiency of up to 92% means that very little energy is wasted as heat so there is no need for any heat sinks COMMON SPECIFICATION SPECIFICATIONS S with their additional space and mounting costs. They are Operating temp. range -40~+85℃（above 71℃ power derating) widely used in industrial control, instrumentation, and Operating case temp. +100 ℃（max) electric power applications. Storage temp. range -55~+125℃ Cooling Free air convection Lead temperature** 300℃（max) Storage humidity range ≤95% Case material Plastic(UL94-V0) MTBF > 2000k hours (25℃，MIL-HDBK-217F) Weight 4.0g Conducted emissions (Refer to Figure 5) EN55022 CLASS B Radiated emissions EN55022 CLASS B ESD EN61000-4-2 Level 3 6kV/8kV perf . Criteria B **1.5mm from case for 10 seconds MICRODC reserves the copyright http://www.microdc.cn % Continuous, auto-recovery Internal IC junction Output current limit Switching frequency Typ. Note: Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 4 WRN78XX-2000(B) Series TYPICAL CHARECTERISTICS EXTERNAL CAPACITOR TABL (figure 1) Part Number C1 (Ceramic capacitor) C2 (Ceramic capacitor) WRN7801-2000(B) 10µF/25V 22µF/6.3V WRN78X2-2000(B) 10µF/25V 22µF/6.3V WRN7802-2000(B) 10µF/25V 22µF/6.3V WRN7803-2000(B) 10µF/25V 22µF/6.3V WRN7805-2000(B) 10µF/25V 22µF/16V WRN78X6-2000(B) 10µF/25V 22µF/16V TYPICAL APPLICATION CIRCUIT Note: 1. C1 and C2 are required and should be fitted close to the converter pins. 2. The capacitance of C1and 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. INPUT FILTER CIRCUIT CONNECT (figure 3) OUTPUT FILTER CIRCUIT CONNECT (figure 4) EMC RECOMMENDED CIRCUIT (figure 5) http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 4 WRN78XX-2000(B) Series OTEST CONFIGURATIONS (TA=25 (TA=25℃ ℃) 1 Efficiency and Output Voltage Ripple Test (figure 6) 2 Start-up and Load Transient Response Test (figure 7) CHARACTERISTICS CURVE http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 4 WRN78XX-2000(B) Series OUTLINE DIMENSIONS & FOOTPRINT DETAILS MECHANICAL DIMENSIONS 78XX-2000 WRN WRN78XX-2000 RECOMMENDED FOOTPRINT 78XX-2000 WRN WRN78XX-2000 78XX-2000 B WRN WRN78XX-2000 78XX-2000B Note: grid:2.54*2.54mm. Note: Unit:mm[inch] Pin section tolerances: ±0.10mm[±0.004inch] General tolerances: ±0.25mm[±0.010inch] TUBE OUTLINE DIMENSIONS 78XX-2000 B WRN WRN78XX-2000 78XX-2000B WRN78XX-2000 Note: Unit:mm[inch] Pin section tolerances: ±0.10mm[±0.004inch] General tolerances: ±0.25mm[±0.010inch] WRN78XX-2000B 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℃, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. Only typical models listed, other models may be different, please contact our technical person for more details. 3. In this datasheet, all the test methods of indications are based on corporate standards. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 4 of 4