• Non-isolated Features • Synchronous rectification design • Adjustable output voltage DC/DC Converter • 2, 3, 4Amp adjustable positive step down Switching Integrated switching regulator • Over load protection Regulator • Continuous short circuit protection R-7xxxP_D • Efficiency up to 97% Description 2,3,4 Amp The R-7xxx series is a high performance 2.5V to 17V, 2Amp to 4Amp, 12-Pin SIP (single in-line SIP12 package), integrated switching regulator (ISR). The synchronous - rectified design yields excellent efficiencies up to 97%. Short circuit protection reduces the short circuit input current to under 50mA. Vertical & Horizontal Selection Guide Single Output Part Input Output Vout Output Efficiency Max. Capacitive Number Voltage Range Voltage Adjust Range (1) Current @ min Vin @ max. Vin Load (2) [VDC] [VDC] [VDC] [A] [%] [%] [µF] R-723.3x 4.5 - 28 3.3 2.5 - 5.5 2 95 89 200/6800 R-725.0x 6.5 - 28 5.0 3.0 - 5.5 2 96 91 200/6800 R-726.5x 8.5 - 28 6.5 5.0 - 8.0 2 97 93 200/6800 R-729.0x 12 - 28 9.0 7.0 - 11 2 96 93 200/6800 R-7212x 15 - 28 12 10 - 14 2 97 95 200/6800 R-7215x 19 - 28 15 13 - 17 2 97 96 200/6800 R-733.3x 4.5 - 28 3.3 2.5 - 5.5 3 94 89 200/6800 R-735.0x 6.5 - 28 5.0 3.0 - 5.5 3 95 92 200/6800 R-736.5x 8.5 - 28 6.5 5.0 - 8.0 3 97 93 200/6800 R-739.0x 12 - 28 9.0 7.0 - 11 3 96 94 200/6800 R-7312x 15 - 28 12 10 - 14 3 97 96 200/6800 R-7315x 19 - 28 15 13 - 17 3 97 96 200/6800 R-743.3x 4.5 - 28 3.3 2.5 - 5.5 4 93 88 200/6800 R-745.0x 6.5 - 28 5.0 3.0 - 5.5 4 95 91 200/6800 IEC/EN60950-1 certified R-746.5x 8.5 - 28 6.5 5.0 - 7.5 4 96 93 200/6800 Notes: Note1: Vin-Vout ≥ 1.5V~4.0V depending on Vout if adjust function is used Note2: Please refer to basic characteristics on page I-2 Model Numbering R-7___x Output Current (A) Pinning (3) nom. Output Voltage Notes: Note3: x can be „P“ = vertical through hole x can be „D“ = bent pins for horizontal through hole mounting Ordering Examples: R-723.3P Iout= 2A nom. Vout= 3.3VDC P= vertical through hole R-7312D Iout= 3A nom. Vout= 12VDC D= horizontal through hole www.recom-power.com REV.: 5/2018 I-1

R-7xxxP_D DC/DC Converter Series Specifications (refer to standard application circuit, Ta= 25°C) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. Quiescent Current min. Vin to max. 30mA Internal Power Dissipation ta<60°C 1.4W R-72xxx 2.5A 3.0A Output Current Limit R-73xxx 3.75A 4.25A R-74xxx 5.0A 5.5A Minimum Load 10% DC-DC ON Open or high, 4.5V min. / 28V max. ON/OFF CTRL (4) DC-DC OFF Low (Power OFF) 0.8V max. Input Current of CTRL Pin DC-DC OFF 100µA Internal Operating Frequency 270kHz 300kHz 330kHz Output Ripple and Noise 40mVp-p 70mVp-p normal start-up time, no external diodes 200µF Maximum Capacitive Load <1 second start-up time + diode protection circuit 6800µF Notes: Note4: ON/OFF pin driven by TTL (logic gate), open-collector bipolar transistor or open-drain MOSFET How to calculate the max output current 100 ] C The internal power dissipiation (P ) follows the equation: [° 85 D e 80 r u t a P = Iout x Vout x (1-Eff ) er 60 D max Vin p m e T t 40 n P e Iout= D bi Vout x (1-Eff ) m 20 max Vin A 0 0 0.5 1 1.4 Internal Power Dissipation [W] Example: R-745.0P Calculation 1: Calculation 2: Vin = 28V Vin = 28V Vout = 5V Vout = 5V 1.4W 1W Eff = 91% Iout= = 3.11A Eff = 91% Iout= = 2.222A max Vin max Vin 5V x (1-0.91) 5V x (1-0.91) P = 1.4W P = 1.0W D D T = 60°C T = 85°C Ambient Ambient Calculation 3: Vin = 12V Eff = 94% 1W max Vin Iout= = 3.33A P = 1.0W D 5V x (1-0.94) T = 85°C Ambient continued on next page www.recom-power.com REV.: 5/2018 I-2

R-7xxxP_D DC/DC Converter Series Specifications (refer to standard application circuit, Ta= 25°C) Efficiency vs. Load R-72xx / R-73xx / R-74xx R-72xx / R-73xx / R-74xx max. Vin min. Vin 100 100 90 95 %] 80 %] 90 y [ y [ c c en 70 en 85 ci ci Effi 60 Effi 80 15Vout 6.5Vout 50 75 5Vout 5Vout 3.3Vout 3.3Vout 40 70 0 1 2 3 4 0 1 2 3 4 Output Current [A] Output Current [A] Efficiency vs. Input Voltage R-72xx / R-73xx R-74xx 100 100 90 90 80 80 %] 70 %] 70 y [ 60 y [ 60 c c en 50 en 50 ci ci Effi 40 Effi 40 30 30 15Vout 20 6.5Vout 20 6.5Vout 5Vout 5Vout 10 10 3.3Vout 3.3Vout 0 0 0 5 10 15 20 25 28 0 5 10 15 20 25 28 Input Voltage [VDC] Input Voltage [VDC] Ripple vs. Input Voltage R-72xx / R-73xx R-74xx 50 100 45 90 40 80 V) 35 70 m e ( 30 mV) 60 ppl 25 e ( 50 Ri 20 ppl 40 Ri 15 30 10 15Vout 6.5Vout 20 6.5Vout 12Vout 5Vout 5Vout 5 9Vout 3.3Vout 10 3.3Vout 0 0 0 5 10 15 20 25 28 0 5 10 15 20 25 28 Input Voltage [VDC] Input Voltage [VDC] www.recom-power.com REV.: 5/2018 I-3

R-7xxxP_D DC/DC Converter Series Specifications (refer to standard application circuit, Ta= 25°C) Trim Table 2ADC R-723.3P/D R-725.0P/D R-726.5P/D R-729.0P/D R-7212P/D R-7215P/D 3ADC R-733.3P/D R-735.0P/D R-736.5P/D R-739.0P/D R-7312P/D R-7315P/D 4ADC R-743.3P/D R-745.0P/D R-746.5P/D Vout nom. 3.3VDC 5.0VDC 6.5VDC 9.0VDC 12VDC 15VDC Vout adj. R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 2.5 8.5kΩ 3.0 33kΩ 470kΩ 3.2 110kΩ 1.6kΩ 3.3 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 11kΩ 5.1 560Ω 28kΩ 12kΩ 5.5 190Ω 2.6kΩ 20kΩ 6.0 47kΩ 6.5 7.0 4.5kΩ 13kΩ 7.5 2.2kΩ 8.0 31kΩ 9.0 10 2.2kΩ 20kΩ 11 390Ω 47kΩ 12 13 2.4kΩ 36kΩ 14 390Ω 76kΩ 15 16 2.6kΩ 17 860Ω REGULATIONS Parameter Condition Value Output Accuracy full load ±1.0% typ. / ±2.0% max. Line Regulation low line to high line, full load ± 0.5% typ. / ±1.0% max. Load Regulation (5) 10% to 100%, full load ± 0.5% typ. / ±1.0% max. 50% load step change 100µs typ. / 200µs max. Transient Response (6) Vout Over / Undershoot 100mV max. Notes: Note5: Operation below 10% load will not harm the converter, but specifications may not be met Note6: Requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications (the capacitor has to be placed as close as possible to the output pins) www.recom-power.com REV.: 5/2018 I-4

R-7xxxP_D DC/DC Converter Series Specifications (refer to standard application circuit, Ta= 25°C) PROTECTIONS Parameter Condition Value Short Circuit Protection (SCP) continuous, automatic recovery Short Circuit Input Current 50mA typ. / 100mA max. Optional Diode Protection Circuit Optional Protection 1: Optional Protection : Add a blocking diode to Vout if current D1 can flow backwards into the output, as this can damage the converter when it is powered down. Protection diodes are +Vin +Vin R-5/6/7xxx +Vout +Vout +Vin +Vin R-5/6/7xxx +Vout +Vout required for high capacitive loads. GND GND Vadj D1 The diode can either be fitted across R1 the divice, if the source is low imped- ance or fitted in series with the output GND GND GND GND (recommended). R1: Trim output voltage up to 1 diode drop ENVIRONMENTAL Parameter Condition Value Operating Temperature Range without derating @ natural convection 0.1m/s -40°C to +85°C Maximum Case Temperature +110°C Thermal Impedance @ natural convection 0.1m/s 25°C/W Operating Humidity non-condensing 95% RH max. Operating Altitude 2000m Pollution Degree PD2 +25°C 749 x 103 hours MTBF according to MIL-HDBK 217F, G.B. +85°C 150 x 103 hours SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Standard IEC60950-1:2005, 2nd Edition + AM2:2013 Information Technology Equipment, General Requirements for Safety 1605077-12 EN60950-1:2006 + AM2:2013 EAC RU-AT.49.09571 TP TC 004/2011 RoHS 2+ RoHS-2011/65/EU + AM-2015/863 continued on next page www.recom-power.com REV.: 5/2018 I-5

R-7xxxP_D DC/DC Converter Series Specifications (refer to standard application circuit, Ta= 25°C) EMC Filtering Suggestions according to EN55032 C4 L1 L2 R-746.5 +Vin +Vin +Vout +Vout GND C1 C2 C3 GND GND Component List EN55022 C1 C2 C3 C4 L1 L2 Class A N/A 33µF N/A N/A 0.45mH CMC Class B 10µF 33µF 1nF/2kV 2mH 0.45mH CMC DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value case non-conducive black plastic, (UL94 V-0) Material potting epoxy, (UL94 V-0) Dimension (LxWxH) 32.2 x 9.1 x 15.0mm Weight 9g typ. Dimension Drawing (mm) 32.2 R-7xxxD 0 5. 1 embossed logo 32.2 9.1 0 R-7xxxP 5. Marking 1 1 9. 2.1 0.70+0.10/-0.05 0.25±0.05 11 x 2.54 = 27.94 Recommended Footprint Details 2.1 0.70+0.10/-0.05 10 0.25±0.05 4. Recommended Footprint Details 1 2 3 4 5 6 7 8 9 101112 2.54 Bottom View 17.0 Top View 1 2 3 4Bo5tto6m7 Vie8w9 101112 2.54 1 2 3 4 5Top6 V7iew8 9 101112 1 2 3 4 5 6 7 8 9 101112 11 x 2.54 = 27.94 8 2.54 0. 2.54 Pin Connections Pin # Single Description 1 ON/OFF Input pin: Active low (less than 0.8V) to disable the device 2,3,4 Vin Power Input 5, 6, 7, 8 GND Input and Output ground (common) 9, 10, 11 Vout Power output 12 Vadj with external resistors R1, R2 to selected output voltage Tolerance: xx.x= ±0.5mm xx.xx= ±0.25mm www.recom-power.com REV.: 5/2018 I-6

R-7xxxP_D DC/DC Converter Series Specifications (refer to standard application circuit, Ta= 25°C) INSTALLATION AND APPLICATION Standard Application Circuit +V +V +V +V in in out out R-7xxxP_D OFF 1µF C1 (Optional) R ON ON/OFF GND V down C2 adj 100µF V ESR= 150mΩ max. CTRL Q1 (Required) R up Com Com Add blocking diode to Vout if current can flow backwards into the output, as this can damage the converter. (Please refer to “Optional Diode Protection Circuit” on Page I-5) PACKAGING INFORMATION Parameter Type Value R-7xxxD 520.0 x 20.0 x 19.0mm Packaging Dimensions (LxWxH) R-7xxxP 530.0 x 23.0 x 19.0mm Packaging Quantity tube 15pcs Storage Temperature Range -40°C to +125°C The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer. The products are not authorized for use in safety-critical applications without RECOM’s explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications. www.recom-power.com REV.: 5/2018 I-7

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: R ECOM: R-743.3P R-745.0P R-746.5P R-7212D R-7212P R-7215D R-7215P R-723.3D R-723.3P R-725.0D R-725.0P R-726.5D R-726.5P R-729.0D R-729.0P R-7312D R-7312P R-7315D R-7315P R-733.3D R-733.3P R-735.0D R-735.0P R-736.5D R-736.5P R-739.0D R-739.0P R-743.3D R-745.0D R-746.5D