WRN78XX-1000(B) Series WIDE INPUT NON NON--ISOLATED & REGULATED SINGLE OUTPUT Product Program Input Voltage(VDC) Output Part Number FEATURES Efficiency up to 97% ◆ Operating temperature: -40°C ~ +85°C Efficiency(%,Typ) Voltage Current Vin Vin (VDC) (MA) (min.) (max.) 4.75-26 1.5 1000 80 71 4.75-26 1.8 1000 83 74 12 4.75-28 2.5 1000 88 80 WRN7803-1000(B) 24 4.75~28 3.3 1000 90 83 WRN7805-1000(B) 24 6.5~32 5.0 1000 93 88 WRN786.5-1000(B) 24 9.0~32 6.5 1000 94 90 WRN7809-1000(B) 24 12~32 9.0 1000 95 92 WRN7812-1000(B) 24 16~32 12 1000 96 94 1000 97 94 Nominal Range WRN781.5-1000(B) 12 WRN781.8-1000(B) 12 WRN782.5-1000(B) ◆ Short circuit protection, thermal shutdown ◆ Low ripple and noise ◆ WRN7815-1000(B) 24 20~32 15 Add suffix "B" for 90°bend pins, for example: WRN7805-1000B. Micro miniature SIP package ◆ ◆ No heatsink required ◆ Industry standard pinout OUTPUT SPECIFICATION SPECIFICATIONS S MTBF>2,000,000 hours ◆ MODEL SELECTION Test conditions Output voltage accuracy 100% full load Line regulation Typ. Max. ±2 ±3 Vin=min. to max. at full load ±0.2 ±0.4 Load regulation* 10% to 100% load ±0.4 ±0.6 Ripple & Noise 20MHz bandwidth (refer to figure 3) Short circuit protection ②Output Voltage ④Bend 90°pins APPLICATIONS The Internal IC junction Switching frequency 100% full load regulators are series ideally high suited efficiency to replace WRN78xx linear regulators and are pin compatible. The Temperature coefficient % 25 35 mVp-p 0.5 1.8 W ℃ 150 280 330 450 Vin= min. to max. Vout:1.5V~3.3 3000 (at full load) Vout:5V~15V 2000 Quiescent current WRN78xx-1000(B) Units Continuous, automatic recovery Thermal shutdown Output current limit switching Min. Short circuit input power** ① ② ③ ④ WR WRN78 N78 05 -1000 (B) ①Product Series ③Output Current Item 5 -40℃ ~ +85℃ ambient Max capacitance load * WRN781.8-1000 is ±0.75%(Max), KHz mA 8 mA ±0.0 %/℃ 1000 µF ** WRN781.5-1000 is 4W(Max). efficiency of up to 97% means that very little energy is wasted as heat so there is no need for any heatsinks with COMMON SPECIFICATION SPECIFICATIONS S their additional space and mounting costs. Item Test conditions Min. Typ. Max. Storage humidity Operating temperature MICRODC RESERVES THE COPYRIGHT 95 Power derating (above 71℃) -40 % 85 Operating case temp. 100 Storage temperature Lead temperature Units -55 ℃ 125 1.5mm from case for 10 seconds 300 Cooling Free air convection Case material Plastic (UL94-V0) 25℃（MIL-HDBK-217F） MTBF 2000 Weight k hours 3.7 g Note: 1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. Only typical models listed. If you need other model, please confirm the power, input voltage and output voltage, then phone us. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 4 WRN78XX-1000(B) Series EXTERNAL CAPACITOR TABL TYPICAL CHARECTERISTICS Part Number C1 (Ceramic capacitor) C2 (Ceramic capacitor) WRN7801-1000(B) 10µF/50V 22µF/6.3V WRN781.8-1000(B) 10µF/50V 22µF/6.3V WRN782.5-1000(B) 10µF/50V 22µF/6.3V WRN7803-1000(B) 10µF/50V 22µF/6.3V WRN7805-1000(B) 10µF/50V 22µF/16V WRN786.5-1000(B) 10µF/50V 10µF/16V WRN7809-1000(B) 10µF/50V 10µF/16V WRN7812-1000(B) 10µF/50V 10µF/25V WRN7815-1000(B) 10µF/50V 10µF/25V TYPICAL APPLICATION CIRCUIT 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 (TA=25℃ ℃) 1 Efficiency and Output Voltage Ripple Test 2 Start-up and Load Transient Response Test (figure 3) 、 (figure 4) http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 4 WRN78XX-1000(B) Series OUTPUT RIPPLE REDUCTION To reduce output ripple, it is recommended to add a LC filter in output port. L: Recommended parameter 10µF~ 47µF. (figure 5) OUTPUT RIPPLE REDUCTION Efficiency http://www.microdc.cn Ripple Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 4 WRN78XX-1000(B) Series OUTLINE DIMENSIONS & FOOTPRINT DETAILS MECHANICAL DIMENSIONS RECOMMENDED FOOTPRINT 78XX-1000 WRN WRN78XX-1000 WRN78XX-1000 WRN78XX-1000B Note: Unit:mm[inch] Pin section tolerances: ±0.10mm[±0.004inch] General tolerances: ±0.25mm[±0.010inch] TUBE OUTLINE DIMENSIONS 78XX-1000 B WRN WRN78XX-1000 78XX-1000B 78XX-1000 WRN WRN78XX-1000 78XX-1000 B WRN WRN78XX-1000 78XX-1000B Note: Unit :mm[inch] General tolerances:±0.50mm[±0.020inch] L=530mm[20.866inch] L=220mm[8.661inch] Note: Unit:mm[inch] Devices per tube quantity: 44pcs 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 Pin section tolerances: ±0.10mm[±0.004inch] General tolerances: ±0.25mm[±0.010inch] 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 http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 4 of 4