WRN72XX-2000(B)&WRN73XX-3000(B)&WRN74XX-4000(B) Series WIDE INPUT NON-ISOLATED & REGULATED SINGLE OUTPUT Product Program Out put Output Output Input (VDC) Voltage Voltage Nominal Range WRN7203-2000(B) 3.3 FEATURES WRN7205-2000(B) 05 WRN7206-2000(B) ◆Efficiency up to 97%,No heat-sink required Part Number Efficiency (%,Typ) Efficiency(%,Typ) Adjust Current Vin Vin (VDC) (MA) (min.) (max.) 4.5-28 2.5-5.5 2000 95 89 6.5-28 3.0-6.0 2000 96 91 6.5 8.5-28 5.0-8.0 2000 97 93 WRN7209-2000(B) 09 12-28 7.0-11 2000 96 93 WRN7212-2000(B) 12 15-28 10-14 2000 97 95 WRN7215-2000(B) 15 19-28 13-17 2000 97 95 WRN7303-3000(B) 3.3 4.5-28 2.5-5.5 3000 94 89 WRN7305-3000(B) 05 6.5-28 3.0-6.0 3000 95 92 WRN7306-3000(B) 6.5 8.5-28 5.0-8.0 3000 97 93 ◆Continuous short circuit protection WRN7309-3000(B) 09 12-28 7.0-11 3000 96 94 (Very low short current lin<50mA) WRN7312-3000(B) 12 15-28 10-14 3000 97 96 WRN7315-3000(B) 15 19-28 13-17 3000 97 96 ◆Over load protection(125% full load typical) WRN7403-4000(B) 3.3 4.5-28 2.5-5.5 4000 93 88 ◆ SIP12 package style WRN7405-4000(B) 05 6.5-28 3.0-6.0 4000 95 91 ◆Synchronous rectification design WRN7406-4000(B) 6.5 8.5-28 5.0-7.5 4000 Note:Vin-Vout ≥ 1.5V~4.0V depending on Vout if adjust function is used! Add suffix "B" for 90°bend pins, for example: WRN7205-2000B. 96 93 ◆2 AMP adjustable positive step down Integrated Switching Regulator ◆Operating temperature : -40℃~ +85℃ ◆Adjustable Output voltage ◆Remote ON/OFF control(Ground off) ◆Wide input range ◆Input voltage range 4.5V-28V MODEL SELECTION WR WRN72 N72①05②-2000③(B)④ ①Product Series ③Output Current ②Output Voltage ④Bend 90°pins Item Test conditions Min. Output voltage accuracy 100% full load, input voltage range ±1 ±2 Line regulation Vin=min. to max, at full load ±0.5 ±1.0 Load regulation 10% to 100% load ±0.5 ±1.0 Ripple & Noise* 20MHz bandwidth 40 70 mVp-p 50 100 mA Short circuit protection ON / OFF Pin pulled low Switching frequency Full load, input voltage range Quiescent current Vin = min.to max.at 0% load Temperature coefficient -40℃ ~ +85℃ ambient MICRODC reserves the copyright 270 300 2.5 Open or High (Power ON) 4.5 Low (Power OFF) Output current limit Max. Units % Continuous, auto-recovery Shutdown current Remote ON / OFF ** This WRN series is a high performance 2.5V to 15V ,2Amp ,12-Pin SIP (single in-line package).Integrated switching regulator (ISR),Synchrotron-rectified design yields excellent efficiencies up to 97%.Short circuit protection with crowbar function to reduce the short circuit current to under 50mA of input current. Typ. Short circuit input current Output voltage range APPLICATIONS http://www.microdc.cn OUTPUT SPECIFICATION SPECIFICATIONS S 100 µA 330 KHz 30 mA ±0.03 %/℃ 17 V 28 V 0.8 V WRN72XX-2000&WRN72XX-2000B 2500 3000 WRN73XX-3000&WRN73XX-3000B 3750 4250 WRN74XX-4000&WRN74XX-4000B 5000 5500 mA *Test ripple and noise by "Parallel cable" method. **ON / OFF pin driven by TTL (logic gate),open-collector bipolar transistor or open-drain MOSFET. COMMON SPECIFICATION SPECIFICATIONS S Case material Plastic(UL94-V0) MTBF (Nominal Vout,100% load) Tamb.=+25℃≤749kHrs Weight 10.7g Operating Case Temperature , Tamb.=+85℃≤150kHrs +110℃（max) Thermal Impedance Natural Convection Internal Power Dissipation Ta < 60℃ Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 25℃/W（max) 1.4W（max) Page 1 of 4 WRN72XX-2000(B)&WRN73XX-3000(B)&WRN74XX-4000(B) Series OUTPUT CURRENT vs INPUT VOLTAGE How to calculating the max output current The internal power dissipation(PD)follows the equation: PD = Io × Vo × (1-η) Io = PD / Vo × (1-η) Where PD = Internal power dissipation Io = Output current Vo = Output voltage η = Efficiency Example:R-745.0P ,at Vin = 28Vdc ,Vo = 5Vdc ,η=91% (see table 1) (a) When Ta = 60°C ,PD = 1.4 Watt (see fig-1) Io = 1.4(W) / 5(V) × (1-0.91) = 3.11(A) (b) When Ta = 85°C ,PD = 1 Watt (see fig-1) Io = 1(W) / 5(V) × (1-0.91) = 2.222(A) (c) At Vin = 12Vdc efficiency = 94% (see table 1) When Ta = 85°C ,PD = 1 Watt (see fig-1) Io = 1(W) / 5(V) × (1-0.94) =3.33(A) STANDARD APPLICATION CIRCUIT CHARACTEISTICS WRN72XX / WRN73XX WRN74XX Ripple VS Vin Ripple VS Vin WRN74XX Efficiency VS Vin http://www.microdc.cn WRN72XX / WRN73XX / WRN74XX Efficiency / Load Vin=Min WRN72XX / WRN73XX Efficiency VS Vin WRN72XX / WRN73XX / WRN74XX Efficiency / Load Vin=Max Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 4 WRN72XX-2000(B)&WRN73XX-3000(B)&WRN74XX-4000(B) Series Table1:Adjustment Resistor Values 2000mA DC WRN7203-2000(B) WRN7205-2000(B) WRN7206-2000(B) WRN7209-2000(B) WRN7212-2000(B) WRN7215-2000(B) 3000mA DC WRN7303-3000(B) WRN7305-3000(B) WRN7306-3000(B) WRN7309-3000(B) WRN7312-3000(B) WRN7315-3000(B) 4000mA DC WRN7403-4000(B) WRN7405-4000(B) WRN7406-4000(B) ----- ----- ----- Vout (nominal) 3.3VDC 5VDC 6.5VDC 9VDC 12VDC 15VDC Vout (adj) R1 R2 R2 R1 R2 R1 R2 R1 2.5 8.5KΩ 3.0 33KΩ 470Ω 3.2 110KΩ 1.6KΩ 7.0 560Ω 13KΩ 8.0 330Ω 31KΩ 10 2.2KΩ 20KΩ 11 390Ω 47KΩ 13 2.4KΩ 36KΩ 14 390Ω 76KΩ 3.3 R1 R2 R1 R2 2.2KΩ 3.4 36KΩ 3.0KΩ 3.6 11KΩ 4.7KΩ 3.9 4.7KΩ 8.5KΩ 4.5 1.6KΩ 30KΩ 4.9 820Ω 220KΩ 5.0 680Ω 5.1 560Ω 28KΩ 12KΩ 5.5 190Ω 2.6KΩ 20KΩ 6.0 11KΩ 47KΩ 6.5 9.0 12 15 16 2.6KΩ 17 860Ω 18 http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 4 WRN72XX-2000(B)&WRN73XX-3000(B)&WRN74XX-4000(B) Series OUTLINE DIMENSIONS & FOOTPRINT DETAILS MECHANICAL DIMENSIONS RECOMMENDED FOOTPRINT Pin Connections Pin Name Description 1 ON/OFF Input pin :Active low (less than 0.8V) to disable the device 2.3.4 Vin 5.6.7.8 GND Input and output ground (common) 9.10.11 Vout Power output 12 Vout-Adj Power input With external resistors R1,R2 to selected output voltage Tolerance: ± 0.25 mm Note: Unit:mm[inch] Pin section tolerances: ±0.10mm[±0.004inch] General tolerances: ±0.25mm[±0.010inch] Note: Unit:mm[inch] Pin section tolerances: ±0.10mm[±0.004inch] General tolerances: ±0.25mm[±0.010inch] TUBE OUTLINE DIMENSIONS WRN72XX-2000 WRN72XX-2000B Note: Unit :mm[inch] General tolerances:±0.50mm[±0.020inch] L=530mm[20.866inch] Devices per tube quantity: 15pcs L=220mm[8.661inch] Devices per tube quantity: 6pcs 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 data sheet, 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