Features ● ● ● ● ● ● ● ● ● INNOLINE Efficiency up to 97%,Non isolated, no need for heatsinks Pin-out compatible with LM78XX Linears Low profile( L*W*H=11.5*8.5*17.5mm) Wide input range.(4.75V ~ 34V) Short circuit protection, Thermal shutdown Non standard outputs available as specials between 1.5V ~15V Low ripple and noise “L” version with 90° pins See Positive to Negative Converter Application Note for use as a voltage inverter (alternative to LM79xx Linear) DC/DC-Converter R-78Bxx1.0(L) Series 1.0 AMP SIP3 Single Output Selection Guide Part Number SIP3 Input Range (1) (V) Output Voltage (V) Output Current (A) Efficiency Min. Vin Max. Vin (%) (%) R-78B1.5-1.0 4.75 – 26 1.5 1.0 77 71 R-78B1.8-1.0 4.75 – 26 1.8 1.0 80 74 R-78B2.5-1.0 4.75 – 34 2.5 1.0 85 78 R-78B3.3-1.0 4.75 – 34 3.3 1.0 89 83 R-78B5.0-1.0 6.5 – 34 5.0 1.0 93 88 R-78B6.5-1.0 9.0 – 34 6.5 1.0 94 90 R-78B9.0-1.0 12 – 34 9.0 1.0 95 93 R-78B12-1.0 16 – 34 12 1.0 96 95 R-78B15-1.0 20 – 34 15 1.0 97 96 * add Suffix “L” for 90° bent pins, e.g. R-78B5.0-1.0L Note 1: 1.5V, 1.8V Output can be unstable with Vin>26VDC Description Output Power (%) The R-78Bxx-Series high efficiency switching regulators are ideally suited to replace 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. The L-Version with 90° 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 10mA round off the specifications of this versatile converter series. Derating-Graph (Ambient Temperature) 120 100 80 60 40 20 0 Safe Operating Area -40 0 25 50 Operating Temperature (°C) www.recom-international.com 13-February-2007 85 75 100 71 1 R-78Bxx-1.0 (L) Series INNOLINE DC/DC-Converter Specifications (refer to the standard application circuit, Ta: 25°C, minimum load = 10%) Characteristics Input Voltage Range Conditions 1.5V, 1.8V 2.5V to 15.5V Min. 4.75 4.75 Output Voltage Range (for customized parts) All Series 1.5 Output Current (see Note 2) All Series Output Current Limit All Series Short Circuit Input Current All Series Typ. 15.5V 0 1000mA 2000mA 10 30mA Internal Power Dissipation 0.65W Short Circuit Protection Continuous, automatic recovery Output Voltage Accuracy (At 100% Load) Line Voltage Regulation (Vin = min. to max. at full load) Ripple & Noise (without Output Capacitor) (10% to 100% full load) All Series 1.5V to 6.5V 9V to 15.5V 1.5V to 6.5V 9V to 15.5V 100% <-> 50% load Transient Recovery Time 1.5V to 6.5V 9V to 15.5V Temperature Coefficient -40°C ~ +85°C ambient Load Regulation (10% to 100% full load) Dynamic Load Stability (with Output Capacitor=100µF) ±2 0.2 0.1 0.4 0.25 ±100mV 1.0 15mVp-p 25mVp-p 220µF Switching Frequency 280 Quiescent Current Vin = min. to max. at 0% load Input Reflected Ripple Current All Series Operating Temperature Range 330 5 150 -40°C 200mAp-p +85°C +100°C Storage Temperature Range -55°C +125°C Case Thermal Impendance 60°C / W Thermal Shutdown Internal IC junction +160°C Relative Humidity (+71°C) 380kHz 7mA Operating Case Temperature . ±3% 0.4% 0.2% 0.6% 0.4% ±150mV 1.5ms 20mVp-p 35mVp-p 0.015%/°C Max capacitance Load MTBF (+25°C) Max. 26.0V 34.0V 95% RH } Detailed Information see Application Notes chapter "MTBF" using MIL-HDBK 217F 6584 x 10³ hours using MIL-HDBK 217F 1139 x 10³ hours Note 2: Converter requires a minimum load of 6mA to start up properly. Once started, the load can be reduced to 0%. Standard Application Circuit +Vin +Vout R-78Bxx-1.0 C1 Add a blocking diode to Vout if current can flow backwards into the output, as this can damage the converter.. C2 22µF (Vin>30V) 100µF (Option) -Vin -Vout To protect the converter during power-up, use C1=22µF if Vin>30V 2 13-February-2007 www.recom-international.com R-78Bxx-1.0 (L) Series INNOLINE DC/DC-Converter Characteristics Ripple Efficiency 100 75 Vo=1.8V Vo=1.5V Vo=15V Vo=12V Vo=9V Vo=6.5V Vo=5V Vo=3.3V Vo=2.5V 50 Vo=15V Vo=9V,12V Vo=6.5V Vo=5V Vo=3.3V Vo=2.5V Vo=1.5V,1.8V 25 Ripple (mV) Efficiency (%) 50 25 34 20 10 10 Vin ( V ) Efficiency Vs Vin (Full Load) Ripple Vs Vin ( Full Load ) Vo=15V Vo=12V Vo=9V Vo=6.5V Vo=5V Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V 100 75 50 Ripple (mV) Efficiency (%) Vo=15V Vo=9V, 12V Vo=6.5V Vo=5V Vo=3.3V Vo=2.5V Vo=1.5V, 1.8V 25 50 25 0.2 0.4 0.6 0.8 1.0 0.2 1.2 0.4 0.6 0.8 1.0 1.2 Output Current ( A ) Output Current ( A ) Ripple Vs Load ( Vin=Max ) Efficiency Vs Load ( Vin=Max ) Vo=15V Vo=12V Vo=9V, 6,5V Vo=5V Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V 100 75 50 25 Vo=9V,12V,15V Vo=6.5V Vo=2.5V,3.3V,5V Vo=1.5V,1.8V Ripple (mV) 50 Efficiency (%) 34 20 Vin ( V ) 25 0.2 0.4 0.6 0.8 1.0 0.2 1.2 0.6 0.8 1.0 1.2 Output Current ( A ) Output Current ( A ) Ripple Vs Load ( Vin=Min ) Efficiency Vs Load ( Vin=Min ) www.recom-international.com 0.4 13-February-2007 3 R-78Bxx-1.0 (L) Series INNOLINE DC/DC-Converter Application Examples High efficiency multiple output R-78B5.0-1.0 +Vin [email protected] RD-0512D +12V@84mA C1 C2 0V Com -Vin -12V@84mA C1: optional, C2: required (further decoupling filtering may be necessary - Wide input range 6.5V to 34V between the two converters) - +/-12V outputs for analogue circuits, e.g. instrumentation amplifier - +5V output for digital circuits Isolated, wide Input range, Distributed Power Architecture (Point of Load) REC10-4812SRWZ/H [email protected] +Vin R-78B5.0-1.0 +5V@1A C1 -Vin C2 - High isolation voltage - 1.6kV - Improved loading / line regulation - Wide Input Voltage Range - 18~75V - Point-of-Load Architecture - C1 is required. Further decoupling filtering may be necessary between the converters C2,C3 : optional R-78B3.3-1.0 +3.3V@1A C3 0V Package Style and Pinning (mm) 3rd angle projection SIP3 PIN Package 8.50 8.50 17.5 RECOM R-78B5.0-1.0 **** Pb RECOM R-78B5.0-1.0 **** 0.51 typ. 1.50 max 0.7 typ. 4.10 Pb 4.10 Recommended Footprint Details 1.00 ø+0.15/0 11.50 3.21 4 2.54 Bottom View 0.25 1 2 3 L - Version 5.08 2.0 Top View Pin Connections Pin # 1 +Vin 2 GND 3 +Vout xx.x ±0.5mm xx.xx ±0.25mm 2.54 13-February-2007 www.recom-international.com