Features Switching Regulator Description Non-isolated Synchronous rectification design Adjustable output voltage 2, 3, 4 & 5AMP adjustable positive step down integrated switching regulator Over load protection Continuous short circuit protection Efficiency up to 96% The R-5xxxA series is a high performance.2v to 5.5V, 2Amp to 5Amp, 2-Pin SIP (single in-line package) integrated switching regulator (ISR). The synchronous - rectified design yields excellent efficiencies up to 96%. Short circuit protection reduces the short circuit input current to under 5mA. Autosense function compensates for any losses in long circuit loops. Selection Guide Part Input Output Vout Output Efficiency Max. Capacitive Number Voltage Range Voltage Adjust Range () Current @ min Vin @ max. Vin Load (2) [VDC] [VDC] [VDC] [A] [%] 2V [%] [µf] R-52.2xA 4.5-8.2. - 3. 2 83 79 75 3/6 R-52.8xA 4.5-8.8. - 4.5 2 88 85 82 3/6 R-522.5xA 4.5-8 2.5.6-5.5 2 9 88 86 3/6 R-523.3xA 4.5-8 3.3.6-5.5 2 92 9 89 3/6 R-525.xA 6.5-8 5. 3. - 5.5 2 95 93 92 3/6 R-53.2xA 4.5-8.2. - 3. 3 85 84 82 3/6 R-53.8xA 4.5-8.8. - 4.5 3 89 88 86 3/6 R-532.5xA 4.5-8 2.5.6-5.5 3 92 9 89 3/6 R-533.3xA 4.5-8 3.3.6-5.5 3 94 93 92 3/6 R-535.xA 6.5-8 5. 3. - 5.5 3 96 95 94 3/6 R-54.2xA 4.5-8.2. - 3. 4 82 8 79 3/6 R-54.8xA 4.5-8.8. - 4.5 4 87 86 85 3/6 R-542.5xA 4.5-8 2.5.6-5.5 4 9 89 88 3/6 R-543.3xA 4.5-8 3.3.6-5.5 4 93 92 9 3/6 R-545.xA 6.5-8 5. 3. - 5.5 4 95 94 93 3/6 R-55.2xA 4.4-8.2. - 3. 5 8 78 3/6 R-55.8xA 4.5-8.8. - 4.5 5 86 85 84 3/6 R-552.5xA 4.5-8 2.5.6-5.5 5 9 89 88 3/6 R-553.3xA 4.5-8 3.3.6-5.5 5 92 9 9 3/6 R-555.xA 7. -.8 5. 3. - 5.5 5 94 93 92 3/6 DC/DC Converter 2,3,4,5 Amp SIP2 Vertical & Horizontal Single Output IEC/EN695- certified Notes: Note: Vin-Vout.5V~4.V depending on Vout if adjust function is used Note2: please refer to basic characteristics Model Numbering Output Current (A) nom. Output Voltage R-5 xa Pinning (3) Notes: Note3: x can be P = vertical through hole x can be D = bent for horizontal through hole mounting Ordering Examples: R-553.3PA Iout= 5A nom. Vout= 3.3VDC P= vertical through hole R-522.5DA Iout= 2A nom. Vout= 2.5VDC D= bent for horizontal through hole mounting www.recom-power.com REV.: 4/28 I-
BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. Quiescent Current min. Vin to max. 2mA Internal Power Dissipation ta<6 C.4W Output Current Limit R-53xx R-54xx R-55xx Minimum Load % ON/OFF CTRL (4) DC-DC ON DC-DC OFF 2.5A 3.75A 5.A 6.A 3.A 4.25A 5.5A 6.5A Open or high, 4.5V min. / 8V max. Low (Power OFF).8V max. Input Current of CTRL Pin DC-DC OFF µa Internal Operating Frequency 27kHz 3kHz 33kHz Output Ripple and Noise Maximum Capacitive Load R-53xx & R-54xx & R-55xx 4mVp-p mvp-p 7mVp-p 2mVp-p normal start-up time, no external diodes 3µF < second start-up time + diode protection circuit 6µF 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 The internal power dissipiation (P D ) follows the equation: P D = Iout x Vout x (-Eff max Vin ) Iout= P D Vout x (-Eff max Vin ) Ambient Temperature [ C] 85 6 4 2 Example: R-545.P.5 Internal Power Dissipation [W].4 Calculation : Calculation 2: Vin = 8V Vin = 8V Vout = 5V Vout = 5V.4W Eff max Vin = 93% Iout= = 4.A Eff max Vin = 93% 5V x (-.93 P D =.4W P D = W T Ambient = 6 C T Ambient = 85 C Iout= W 5V x (-.93 ) = 2.857A Calculation 3: Vin = 2V Eff max Vin = 94% P D =.W T Ambient = 85 C Iout= W 5V x (-.94 ) = 3.33A www.recom-power.com REV.: 4/28 I-2
Efficiency vs. Load R-53xx / R-54xx / R-55xx min. Vin min. Vin 95 95 Efficiency [%] 9 85 75 2..8Vout.2Vout 7. 2 3 4 5 Efficiency [%] 9 85 75 2..8Vout.2Vout 7..5.5 2 Output Load [A] Output Load [A] R-53xx / R-54xx / R-55xx Vin=8V Vin=8V 95 9 Efficiency [%] 9 85 Efficiency [%] 7 6 75 2..8Vout.2Vout 7. 2 3 4 5 5 2..8Vout.2Vout 4..5.5 2 Output Load [A] Output Load [A] Trim Tables or Calculation 2ADC R-52.2PA/DA R-52.8PA/DA R-522.5PA/DA R-523.3PA/DA R-525.PA/DA 3ADC R-53.2PA/DA R-53.8PA/DA R-532.5PA/DA R-533.3PA/DA R-535.PA/DA 4ADC R-54.2PA/DA R-54.8PA/DA R-542.5PA/DA R-543.3PA/DA R-545.PA/DA 5ADC R-55.2PA/DA R-55.8PA/DA R-552.5PA/DA R-553.3PA/DA R-555.PA/DA Vout nom..2vdc.8vdc 2.5VDC 3.3VDC 5.VDC Vout adj. R R2 R R2 R R2 R R2 R R2.8.9 74Ω. 3.9kΩ. 3kΩ.5kΩ.2 2.kΩ 27Ω www.recom-power.com REV.: 4/28 I-3
Trim Tables or Calculation 2ADC R-52.2PA/DA R-52.8PA/DA R-522.5PA/DA R-523.3PA/DA R-525.PA/DA 3ADC R-53.2PA/DA R-53.8PA/DA R-532.5PA/DA R-533.3PA/DA R-535.PA/DA 4ADC R-54.2PA/DA R-54.8PA/DA R-542.5PA/DA R-543.3PA/DA R-545.PA/DA 5ADC R-55.2PA/DA R-55.8PA/DA R-552.5PA/DA R-553.3PA/DA R-555.PA/DA Vout nom..2vdc.8vdc 2.5VDC 3.3VDC 5.VDC Vout adj. R R2 R R2 R R2 R R2 R R2.3 37kΩ 3.7kΩ 75Ω.5.5kΩ kω 2.KΩ 39Ω.6 8.2kΩ 8kΩ 3.KΩ 75Ω.7 6.5kΩ 4kΩ 4.KΩ.2kΩ.8 5.2kΩ 5.6KΩ.7kΩ.9 4.3kΩ 36kΩ 7.5KΩ 2.2kΩ 2. 3.6kΩ.8kΩ.5KΩ 2.8kΩ 2.4 2.kΩ 5.2kΩ 82KΩ 6.8kΩ 2.5.8kΩ 4.3kΩ 8.5kΩ 2.6.65kΩ 3.6kΩ 33kΩ.5kΩ 3..5kΩ 2.kΩ 6.2kΩ 33kΩ 47Ω 3.2.65kΩ 4.kΩ kω.6kω 3.3.5kΩ 3.4kΩ 2.2kΩ 3.4.35kΩ 2.9kΩ 36kΩ 3.kΩ 3.6.7kΩ 2.2kΩ kω 4.7kΩ 3.9 7Ω.4kΩ 4.7kΩ 8.5kΩ 4.5 39Ω 65Ω.6Ω 3kΩ 4.9 35Ω 82Ω 22kΩ 5. 29Ω 6Ω 5. 22Ω 56Ω 28kΩ 5.5 39Ω 9Ω 2.6kΩ REGULATIONS Parameter Condition Value Output Accuracy Line Regulation Load Regulation (5) Transient Response (6) low line to high line, full load % to %, full load 5% load step change Vout Over / Undershoot R-53xx & R-54xx & R-55xx R-53xx & R-54xx & R-55xx Notes: Note5: Operation below % load will not harm the converter, but specifications may not be met Note6: Requires a µf electronic or tantalum output capacitpr for proper operation in all applications (the capacitor has to be placed as close as possible to the output pins): µf for x, R-53xx and R-54xx, 22µF for R-55xx ±.% typ. / ±2.% max. ±.25% typ. / ±.5% max. ±.5% typ. / ±.% max. ±.5% typ. / ±.% max. ±.% typ. / ±2.% max. µs typ. / 2µs max. mv max. www.recom-power.com REV.: 4/28 I-4
Line Regulation R-53xx / R-54xx / R- 55xx Line Regulation [%].5 Line Regulation [%].5.2.8 2.3 3.3 5..2.8 2.3 3.3 5. Output Voltage [V] Output Voltage [V] Load Regulation R-53xx / R-54xx / R- 55xx Load Regulation [%] 2..5..5 2..8Vout.2Vout 5. 5 8 Load Regulation [%] 2..5..5 2..8Vout.2Vout 5. 5 8 Input Voltage [V] Input Voltage [V] PROTECTIONS Parameter Condition Value Short Circuit Protection (SCP) continuous, automatic recovery Short Circuit Input Current 5mA max. www.recom-power.com REV.: 4/28 I-5
Optional Diode Protection Circuit Add a blocking diode to Vout if current can flow backwards into the output, as this can damage the converter when it is powered down. Protection diodes are required for high capacitive loads. Optional Protection : Optional Protection : D R-5/6/7xxx R-5/6/7xxx V adj D The diode can either be fitted across the divice, if the source is low impedance or fitted in series with the output (recommended). R R: Trim output voltage up to diode drop ENVIRONMENTAL Parameter Condition Value Operating Temperature Range without derating @ natural convection.m/s -4 C to +85 C Maximum Case Temperature + C Thermal Impedance @ natural convection.m/s 25 C/W Operating Humidity non-condensing 95% RH max. Operating Altitude Pollution Degree MTBF according to MIL-HDBK 27F, G.B. +25 C +85 C 2m PD2 749 x 3 hours 5 x 3 hours SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Standard Information Technology Equipment, General Requirements for Safety 6577-2 IEC695-:25, 2nd Edition + AM2:23 EN695-:26 + AM2:23 EAC RU-AT.49.957 TP TC 4/2 RoHS 2+ RoHS-2/65/EU + AM-25/863 DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value Material Dimension (LxWxH) Weight case potting non-conducive black plastic, (UL94 V-) epoxy, (UL94 V-) 32.2 x 9. x 5.mm www.recom-power.com REV.: 4/28 I-6 9g typ.
Dimension Drawing (mm) 32.2 R-5xxxDA 5. embossed logo 32.2 9. R-5xxxPA 5. Marking 2. 9..7 +./-.5.25 ±.5 x 2.54 = 27.94 Recommended Footprint Details 2..7 +./-.5.25 ±.5 4. 2 3 4 5 6 7 8 9 2 2.54 Recommended Footprint Details Bottom View 7. Top View 2 3 4 5 6 7 8 9 2 Bottom View 2 3 4 5 6 7 8 9 2 x 2.54 = 27.94.8 2.54 2.54 2 3 4 5 6 7 8 9 2 Top View 2.54 Pin Connections Pin # Single Description ON/OFF Input pin: Active low (less than.8v) to disable the device 2,3,4 Vin Power Input 5, 6, 7, 8 Input and Output ground (common) 9, Vout Power output Vout (Auto Sense) If unused this pin must be connected to Pin 9 and 2 Vadj With external resistors R, R2 to selected output voltage Tolerance: xx.x= ±.5mm xx.xx= ±.25mm INSTALLATION AND APPLICATION Standard Application Circuit OFF µf (Optional) ON V CTRL C Q ON/OFF V adj R down R up C2 µf ESR= 5mΩ max. (Required) 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-6) www.recom-power.com REV.: 4/28 I-7
Parallel Application Circuit The, R-53xx, R-54xx series can be used in parallel to upgrade the output current capacity for the same output voltage. For example, the R-543.3PA can parallel up with another R-554.3PA to give up to 8 amps or with the R-533.3PA or R-23-3PA types to give output currents of up to 7 amps or 6 amps. The R-55xx series cannot be paralleled. 2 3 U 2 ON/OFF Control C µf/25v (REQ D) 4 5 6 7 8 9 C2- µf/v (REQ D) V out C2-2 µf/v (REQ D) 4 5 6 7 8 9 3 2 U2 2 must be connected together ponent side Solder side 2 C +Vin 2 U U C2-2 U2 2 U2 Keep 2mm to 5mm distance between both converters +Vout Sense C2-2 To Load PACKAGING INFORMATION Parameter Type Value Packaging Dimensions (LxWxH) R-5xxxDA R-5xxxPA 52. x 2. x 9.mm 53. x 23. x 9.mm Packaging Quantity tube 5pcs Storage Temperature Range -4 C to +25 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.: 4/28 I-8