Features ● ● ● ● ● ● ● ● INNOLINE Efficiency up to 94%, non-isolated, no need for heatsinks! Pin-out compatible with LM78XX Linears Very low profile (L*W*H=11.5*7.5*10.2mm) Wide input range (4.75V ~ 18V) Short circuit protection, thermal shutdown DC/DC-Converter R-78xx-1.0 Series UL94V-0 Package Material Non standard outputs available as specials between 1.5V ~5.5V Low ripple and noise 1.0 AMP SIP3 Single Output Selection Guide Part Number SIP3 Input Range (V) Output Voltage (V) Output Current (A) Efficiency Min. Vin Max. Vin (%) (%) R-781.8-1.0 4.75 – 18 1.8 1.0 82 76 R-782.5-1.0 4.75 – 18 2.5 1.0 87 81 R-783.3-1.0 4.75 – 18 3.3 1.0 90 84 R-785.0-1.0 6.5 – 18 5.0 1.0 94 89 Description The R-78xx-1.0 series high efficiency switching regulators are ideally suited to replace 1 Amp 78xx linear regulators and are pin compatible. The efficiency of up to 97% 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. Low ripple and noise figures and a short circuit input current of typically only 10mA round off the specifications of this versatile converter series. Specifications ( typical at 25°C, 10% minimum load, unless otherwise specified ) Characteristics Conditions Min. Typ. Max. Input Voltage Range All Series 4.75 18V Output Voltage Range All Series 1.5 5.5V Output Current All Series 0 Output Current Limit All Series Short Circuit Input Current All Series 1000mA 3000mA 10 Internal Power Dissipation 30mA 0.4W Short Circuit Protection Continuous, automatic recovery Output Voltage Accuracy (At 100% Load) All Series ±2 ±3% Line Regulation (100% Load, Vin max.) All Series 0.2 0.4% Load Regulation (10 to 100% full load) All Series 0.4 0.6% Dynamic Load Stability 100% <-> 50% load ±85mV Ripple & Noise (20Mhz BW) All Series Temperature Coefficient -40°C ~ +85°C ambient 0.015%/°C 350 5 -40°C +100°C Storage Temperature Range -55°C +125°C Case Thermal Impendance 70°C/W Internal IC junction 148 80 60 40 30 20 0 -40 Safe Operating Area 0 25 50 Operating Temperature (°C) +160°C Package Weight (+71°C) 7mA +85°C Operating Case Temperature (with derating) . 430kHz Output Power (%) 280 Vin = min. to max. at 0% load Operating Temperature Range MTBF (+25°C) 120 100 220µF Switching Frequency Thermal Shutdown (Ambient Temperature) ±100mV 20mVp-p 30mVp-p Max capacitance Load Quiescent Current Derating-Graph 60 85 75 100 1.9g } Detailed Information see Application Notes chapter "MTBF" using MIL-HDBK 217F 13338 x 10³ hours using MIL-HDBK 217F 3880 x 10³ hours 27-March-2007 www.recom-international.com R-78xx-1.0 Series INNOLINE DC/DC-Converter Standard Application Circuit +Vin +Vout R-78xx-1.0 Add a blocking diode to Vout if current can flow backwards into the output, as this can damage the converter.. -Vin -Vout Characteristics Ripple Efficiency 100 50 Vo=5V Vo=3.3V Vo=2.5V Vo=1.8V 75 Vo=5V 25 Vo=3.3V Vo=2.5V Vo=1.8V Ripple (mV) Efficiency (%) 50 25 5 15 10 18 5 Ripple Vs Vin ( Full Load ) 100 50 Vo=5V Vo=3.3V Vo=2.5V Vo=1.8V 75 50 Vo=5V 25 Vo=3.3V Vo=2.5V Vo=1.8V Ripple (mV) Efficiency (%) 18 Vin ( V ) Efficiency Vs Vin (Full Load) 25 0.2 0.4 0.6 0.8 1.0 1.2 0.2 Output Current ( A ) 0.4 0.6 0.8 1.0 1.2 Output Current ( A ) Efficiency Vs Load ( Vin=Max ) Ripple Vs Load ( Vin=Max ) 100 50 Vo=5V Vo=3.3V Vo=2.5V Vo=1.8V 75 50 25 Vo=5V Vo=3.3V Vo=2.5V Vo=1.8V Ripple (mV) Efficiency (%) 15 10 Vin ( V ) 25 0.2 0.4 0.6 0.8 1.0 1.2 0.2 Output Current ( A ) 0.6 0.8 1.0 1.2 Output Current ( A ) Efficiency Vs Load ( Vin=Min ) www.recom-international.com 0.4 Ripple Vs Load ( Vin=Min ) 27-March-2007 149 R-78xx-1.0 Series INNOLINE DC/DC-Converter Application Examples High efficiency, isolated, dual regulated outputs REC3-0515DRW/H4 +15VDC R-785.0-1.0 +Vin Com C1 -15VDC C2 - Medical Grade Isolated Dual Outputs -Vin C1: Optional , C2 : Required (further decoupling filtering may be necessary between the two converters) - Wide input range 6.5V to 18V - High Efficiency, Suitable for 12V Battery Powered Devices Isolated (up to 6KV), wide Input range regulated output DC/DC Converter ( 1:1 ) +Vin R-78xx-1.0 +Vout C1 -Vin C2 - High isolation voltage - Improved loading / line regulation - Wide Input Voltage Range - Point-of-Load Architecture -Vout C1: Required (further decoupling filtering may be necessary between the two converters), C2: Optional Package Style and Pinning (mm) SIP3 PIN Package 3rd angle projection 7.55 10.2 RECOM R-785.0-1.0 **** Pb RECOM R-785.0-1.0 0.51 typ. **** Pb 1 2 3 0.7 typ. 4.10 Recommended Footprint Details 1.00 ø+0.15/0 11.50 0.25 Bottom View 3.21 150 2.54 2.0 Top View 5.08 2.54 27-March-2007 Pin Connections Pin # 1 2 3 xx.x ±0.5mm xx.xx ±0.25mm +Vin GND +Vout www.recom-international.com