Features Switching Regulator Description Efficiency up tpo 96%, no heatsinks required Pin-out compatible with LM78XX linears Low profile (L/W/H=.5 x 8.5 x 7.5mm) High input voltage range, up to 7V Short circuit protection, thermal shutdown Low ripple and noise L version with 9 pins The R-78HBxx-Series high efficiency, high input voltage switching regulators are ideally suited to replace 78xx linear regulators and are pin compatible. The efficiency of up to 96% 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. An input voltage range of up to 8:is unsurpassed by any other converter and allows the full stored energy utilization of standard and high voltage batteries. The fully protected output is ideal for industrial applications (especially for industry standard 4VDC bus supplies) and the L-Version with 9 pins allows direct replacement for laid-flat regulators where component height is at a premium. Low ripple and noise figures and a short circuit input current of typically only 5mA round off the specifications of this versatile converter series. Typical applications include telecommunication, automotive, industrial, aerospace and battery powered applications. DC/DC Converter R-78HB-.5(L).5 Amp SIP Single Output Selection Guide Part Input Output Output Efficiency Number Voltage Range Voltage Current @ min Vin @ max. Vin [VDC] [VDC] [A] [%] [%] R-78HB.-.5 9-7..5 8 76 R-78HB5.-.5 9-7 5..5 87 8 R-78HB6.5-.5 9-7 6.5.5 9 84 R-78HB9.-.5 4-7 9..5 9 86 R-78HB-.5 7-7.5 94 89 R-78HB5-.5-7 5.5 95 9 R-78HB4-. 6-7 4. 96 9 Model Numbering R-78HB - /L Output Voltage Pinning () Output Current Note: add suffix /L for 9 bent pins, e.g. R-78B5.-.L IEC/EN69- certified EN5 certified Specifications (measured @ Ta= 5 C, % minimum load, unless otherwise stated) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. Internal Input Filter Absolute Maximum Input Voltage Range µf capacitor 75VDC Quiescent Current nom. Vin= 48VDC ma 5mA Internal Power Dissipation.65W Minimum Load () % Note: Operation under no load will not harm the converter, but specifications may not be met A minimum load of ma is recommended continued on next page www.recom-power.com REV.: 4/8 I-
Specifications (measured @ Ta= 5 C, % minimum load, unless otherwise stated) Parameter Condition Min. Typ. Max. Internal Operating Frequency nom. Vin= 48VDC khz 8kHz Output Ripple and Noise MHz BW ( - % load) mvp-p 6mVp-p Absolute Maximum Capacitive Load Switching Frequency vs. Load second start up, no external components < second start up + diode protection circuit µf 68µF 8 4 Frequency [khz] Vout 6. 4 Output Current (ma) Efficiency vs. Vin (full load) Ripple vs. Vin (full load) Efficiency [%] 9 8 7 6 4 Vout 6. 9 8 7 6 45 54 6 7 Input Voltage [VDC] Ripple [mv] 45 4 5 5 5 5 5, Vout 6. 9 8 7 6 45 54 6 7 Input Voltage [VDC] continued on next page www.recom-power.com REV.: 4/8 I-
Specifications (measured @ Ta= 5 C, % minimum load, unless otherwise stated) Efficiency vs. Load (max. Vin) Ripple vs. Load (max. Vin) Efficiency [%] 9 8 7 6 4 Vout 6. 4 6 7 8 9 Ripple [mv] 6 4 4 6 7 8 9 5, Vout 6. Efficiency vs. Load (min. Vin) Ripple vs. Load (min. Vin) Efficiency [%] 9 8 7 6 4 4, Vout 6. 4 6 7 8 9 Ripple [mv] 6 4 4 6 7 8 9 5, Vout 6. REGULATIONS Parameter Condition Value Output Accuracy full load ±.% typ / ±.% max. Line Regulation low line to high line, full load ±.4% typ. / ±.% max. Load Regulation % to % load ±.% typ. / ±.6% max. Transient Response () % <-> % load ±75mV typ. / ±mv max. Note: Measurements are made with a µf output capacitor www.recom-power.com REV.: 4/8 I-
Specifications (measured @ Ta= 5 C, % minimum load, unless otherwise stated) PROTECTIONS Parameter Condition Value Short Circuit Protection (SCP) below mw continuous, automatic recovery Short Circuit Input Current nom. Vin= 4VDC 5mA typ. / 5mA max. 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. The diode can either be fitted across the device if the source is low impedance or fitted in series with the output (recommended). Optional Protection : Optional Protection : +V IN +V IN = -.V Protection Circuit +V IN C To protect the converter during power-up, use C=.µF/V if Vin>V ENVIRONMENTAL Parameter Condition Value Operating Temperature Range with derating (see graph) -4 C to +85 C Maximum Case Temperature Temperature Coefficient + C ±.5%/ C Thermal Impedance.m/s, vertical 6 C/W Operating Altitude Operating Humidity non-condensing 95% RH max. Pollution Degree MTBF according to MIL-HDBK-7F, G.B. +5 C +7 C m PD 795 x hours 4 x hours Derating Graph 9 8 7 6 4-4 - - - 4 6 7 8 9 7 85 Ambient Temperature [ C] www.recom-power.com REV.: 4/8 I-4
Specifications (measured @ Ta= 5 C, % minimum load, unless otherwise stated) SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Standard Information Technology Equipment, General Requirements for Safety 6 IEC69-:5, nd Edition + AM : EN69-:6 + AM : EAC RU-AT.49.957 TP TC 4/ RoHs + RoHS /65/EU + AM5/86 EMC Compliance Condition Standard / Criterion Electromagnetic compatibility of multimedia equipment - Emission requirements with external components EN5, Class A EN5, Class B ESD Electrostatic discharge immunity test Air ±8kV, Contact ±4kV EN6-4-, Criteria A Radiated, radio-frequency, electromagnetic field immunity test V/m EN6-4-, Criteria A DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value Material Package Dimension (LxWxH) Package Weight case potting non-conductive black plastic, (UL94 V-) silicone, (UL94 V-).5 x 8.5 x 7.5mm 4g typ. Dimension Drawing (mm) with suffix /L bent pins.5 embossed logo 8.5.5 embossed logo 8.5 Pin Connections Pin # Single +Vin +Vout 7.5 Marking.5 7.5 9. Marking Tolerance: xx.x= ±.5mm xx.xx= ±.5mm.5 9-9.5 ±.5.7 +./-.5.5 ±.5 4..7 +./-.5. 6. Recommended Footprint Details Recommended Footprint Details Bottom View.54 Top View Bottom View..54 Top View. 5.8..54 5.8 4..54 www.recom-power.com REV.: 4/8 I-5
Specifications (measured @ Ta= 5 C, % minimum load, unless otherwise stated) INSTALLATION AND APPLICATION Positive to Negative Converter V V C and C are required and should be fitted close to the converter pins. +VIN C C -VOUT Maximum capacitiv load including C is µf Pin Connections Pin # Negative Positive +Vin +Vin -Vout +Vout Selection Guide - Negativ Output Part Input Output Output Efficiency External Capacitor Number Voltage Range Voltage Current @ min Vin @ max. Vin C C (4) [VDC] [VDC] [A] [%] [%] R-78HB.-.5 5-65 -. -.4 78 75 µf/v µf/6.v R-78HB5.-.5 5-65 -5. -.4 8 8 µf/v µf/v R-78HB6.5-.5 5-65 -6.5 -. 84 8 µf/v µf/v R-78HB9.-.5 5-6 -9. -. 87 85 µf/v µf/6v R-78HB-.5 5-59 - -. 88 86 µf/v µf/5v R-78HB5-.5 5-56 -5 -. 89 87 µf/v µf/5v R-78HB4-. 5-48 -4 -. 89 87 µf/v µf/5v Note4: Maximum Capacitive Load including C is µf Dual Output (two Converters) with Negativ Output +VIN +VOUT V V C C -VOUT continued on next page www.recom-power.com REV.: 4/8 I-6
Specifications (measured @ Ta= 5 C, % minimum load, unless otherwise stated) High Input Voltage Multiple Output Supply Revese Polarity Protection +Batt +V @ ma C storage Brown out Protection uf R-785.-. +5V @ 8mA -Batt V Com Wide input range 8V to 7V - can be used with 4V, 48V or 6V batteries +V outputs for interface and display electronics +5V high current output for digital electronics Further decoupling filtering may be necessary between the converters PACKAGING INFORMATION Parameter Type Value Packaging Dimension (LxWxH) tube without suffix with suffix L 5. x 5. x.6mm 5. x 6. x 5.8mm Packaging Quantity tube 4pcs Storage Temperature Range Storage Humidity -55 C to +5 C 95% RH max. 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.: 4/8 I-7