WRN78XX-1500(B) Series WIDE INPUT NON-ISOLATED & REGULATED SINGLE OUTPUT Product Program Input Voltage(VDC) Output Part Number Efficiency(%,Typ) Voltage Current Vin Vin (VDC) (MA) (min.) (max.) Nominal Range WRN781.5-1500 12 4.75-18 1.5 1500 83 78 WRN781.8-1500 12 4.75-18 1.8 1500 85 81 WRN782.5-1500 12 4.75-18 2.5 1500 88 85 WRN7803-1500 12 4.75-18 3.3 1500 91 88 WRN7805-1500 12 6.5-18 5 1500 93 91 WRN786.5-1500 12 8-18 6.5 1500 95 93 WRN781.5-1500B 12 4.75-18 1.5 1500 83 78 WRN781.8-1500B 12 4.75-18 1.8 1500 85 81 WRN782.5-1500B 12 4.75-18 2.5 1500 88 85 Low ripple and noise WRN7803-1500B 12 4.75-18 3.3 1500 91 88 Micro miniature SIP3 package WRN7805-1500B 12 6.5-18 5 1500 93 91 WRN786.5-1500B 12 8-18 6.5 1500 Add suffix "B" for 90°bend pins, for example: WRN7805-1500B. 95 93 FEATURES Efficiency up to 95%, No heatsink require ◆ 1.5A large current output ◆ Operating temperature : -40°C~ +85°C ◆ Short circuit protection, thermal shutdown ◆ ◆ ◆ UL94-V0 requirement ◆ Ultra low power loss ◆ Industry standard pinout ◆ OUTPUT SPECIFICATION SPECIFICATIONS S Pin-out compatible with WRN78xx linear ◆ MTBE>2000,000Hours ◆ MODEL SELECTION ① ② ③ ④ WR WRN78 N78 05 -1500 (B) ①Product Series ③Output Current Item Test conditions Output voltage accuracy 100% full load,input voltage range Min. Typ. Max. ±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 ) Short circuit input power ②Output Voltage ④Bend 90°pins Short circuit protection Thermal shutdown APPLICATIONS Internal IC junction MICRODC RESERVES THE COPYRIGHT http://www.microdc.cn Temperature coefficient 20 45 mVp-p 0.5 1.8 W ℃ 150 5000 Full load, input voltage range 300 Quiescent current The WRN78xx-1500(B) series switching regulators are ideal replacement for WRN78xx linear regulators. The efficiency of up to 95% means that very little energy is wasted as heat so there is no need for any heat sinks with their additional space and mounting costs. They are widely used in industrial control, instrumentation, and electric power applications. % Continuous, auto-recovery Output current limit Switching frequency Units 340 mA 380 5 -40℃ ~ +85℃ ambient Max capacitance load KHz 10 mA ±0.02 %/℃ 1000 µF *Test ripple and noise by "parallel cable" method. COMMON SPECIFICATION SPECIFICATIONS S Operating temp. range -40~+85℃（above 71℃ power derating) Operating case temp. +100℃（max) 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 Note: All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 4 WRN78XX-1500(B) Series TYPICAL CHARECTERISTICS EXTERNAL CAPACITOR TABL (figure 1) Part Number C1 (Ceramic capacitor) C2 (Ceramic capacitor) WRN781.5-1500(B) 10µF/25V 22µF/6.3V WRN781.8-1500(B) 10µF/25V 22µF/6.3V WRN782.5-1500(B) 10µF/25V 22µF/6.3V WRN7803-1500(B) 10µF/25V 22µF/6.3V WRN7805-1500(B) 10µF/25V 22µF/16V WRN786.5-1500(B) 10µF/25V 22µF/16V TYPICAL APPLICATION CIRCUIT (figure 2) 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-1500(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-1500(B) Series OUTLINE DIMENSIONS & FOOTPRINT DETAILS MECHANICAL DIMENSIONS 78XX15 00 WRN WRN78XX78XX-15 1500 RECOMMENDED FOOTPRINT 78XX15 00 WRN WRN78XX78XX-15 1500 78XX15 00 B WRN WRN78XX78XX-15 1500 00B 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 78XX15 00 B WRN WRN78XX78XX-15 1500 00B WRN78XX-1500 Note: Unit:mm[inch] Pin section tolerances: ±0.10mm[±0.004inch] General tolerances: ±0.25mm[±0.010inch] WRN78XX-1500B 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(12V) 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