● ● ● ● Features ● ● ● INNOLINE Efficiency up to 95%, no Need for Heatsinks! Industry Standard Pin-Out 1.5A Start-Up Overload Capacity Non-Isolated Regulator with very low Standby Current Wide Input Range (7V ~ 42V) Short Circuit Protection Fixed Switching Frequency (350kHz), Shielded Magnetics DC/DC-Converter with 3 year Warranty 1.0 AMP SMD Single Output Description The R-78T is a switching regulator with a wide input voltage range and a low profile SMD package. Three output voltages are available as standard: 3.3V, 5V and 12V. Due to the 1.5A start-up overload capability, the R-78T can be used to replace 1A or 1.5A regulators in many applications. These modules come with three different styles to be pin-compatible with existing solutions, but at a lower cost. Selection Guide Part Number SIP3 Input Range (V) Output Voltage (V) Output Current (A) Efficiency Min. Vin Max. Vin (%) (%) R-78T3.3-1.0* 7 – 42 3.3 1.0 88 79 R-78T5.0-1.0* 8 – 42 5.0 1.0 92 85 R-78T12-1.0* 15 – 42 12 1.0 95 92 *add suffix /FC, /AC or /AL for required pinning option * add suffix -R for tape&reel packing e.g. R-78T3.3-1.0/FC-R. -Tray for Tray packaging, e.g. R-78T5.0-1.0/AC-Tray For more details see Application Notes. RoHS 2011/65/EU 6/6 Specifications ( typical at 25°C, 10% minimum load, unless otherwise specified ) 3.3V 5V 12V No Load Input Current Input Filter Voltage Accuracy Line Regulation Load Regulation Minimum Load Ripple & Noise (20MHz Limited) Transient Response 50mA/uS Operating Frequency Current Limit Short Circuit Protection Operating Temperature Storage Temperature Humidity Dimension (LL to HL at Full Load) (10-100%) 100% - 50% Load suffix /AC or /AL suffix /FC Weight Cooling Method MTBF (25°C) MIL-HDBK-217F 7-42VDC 8-42VDC 15-42VDC 1mA typ. C Filter ±2% typ. / ±3% max. ±0.2% typ. ±0.4% typ. 10% 50mVp-p typ. / 100mVp-p max. ±250mV max. 350KHz typ. 1.5A / 10sec max. Current limited to 3.5A typ. -40°C to 85°C -55°C to 125°C 5% to 95% RH max. 23 x 27.2 x 10mm 23 x 29.4 x 8mm 4.5g typ. Free Air Convection 367 x 10³ hours Standard Application Circuit +Vin 1 C1 Optional GND www.recom-power.com R-78T5.0-1.0 2 3 R-78T-1.0 Derating-Graph (Ambient Temperature) 1.6 10s Overload 1.4 Iout (Amps) Input Voltage Range 1.2 1.0 0.8 0.6 Safe Operating Area 0.4 0.2 0 -40 85 50 75 100 55 Operating Temperature (°C) 0 25 +Vout C2 Optional GND REV: 0/2015 Refer to Application Notes I-33 R-78Txx-1.0 Series INNOLINE DC/DC-Converter Typical Characteristics Efficiency Ripple R-78T3.3-1.0 45 95 40 Efficiency (%) 90 Ripple & Noise [mVp-p] 100 7V 12V 24V 36V 42V 85 80 75 70 30 25 20 15 65 10 60 5 55 0 20 40 60 80 42V 24V 36V 35 0 100 0 0,2 Load (%) 0,4 0,6 0,8 1,0 Load Current [A] R-78T5.0-1.0 100 45 95 85 Ripple & Noise [mVp-p] Efficiency (%) R-78T 40 8V 12V 24V 36V 42V 90 80 75 70 30 25 20 15 65 10 60 5 55 0 20 40 60 80 0 100 42V 24V 36V 35 0 0,2 Load (%) 0,4 0,6 0,8 1,0 Load Current [A] R-78T12-1.0 45 100 Ripple & Noise [mVp-p] 95 Efficiency (%) 40 15V 24V 36V 42V 90 85 80 25 20 15 5 0 0 20 40 60 80 100 0 0,2 0,4 0,6 0,8 1,0 Load Current [A] Load (%) I-34 24V 30 10 75 70 42V 36V 35 REV: 0/2015 www.recom-power.com R-78Txx-1.0 Series INNOLINE DC/DC-Converter Package Style and Pinning (mm) R-78Txx-1.0/AC Pin Connections Recommended Footprint Pin # 1 2 3 Æ 2.00 (2x Mounting Pads) 20.00 +Vin GND +Vout 11.23 23 25 11.10 Bottom View Bottom Top View 2.2 4.00 1 2 3 2.54 1.20 ±0.1 Æ0.64 ±0.1 2.2 5.08 2.54 2.82 10 max. Tolerance ±0.5mm unless otherwise specified R-78T R-78Txx-1.0/AL Recommended Footprint Æ 2.00 Pin Connections (2x Mounting Pads) 20.00 Pin # 1 2 3 5.08 5.08 11.23 7.40 11.10 +Vin GND +Vout 23 Bottom View 4.00 25 Bottom Top View 2.2 1 2 3 1.20 ±0.1 2.54 2.54 Æ0.64±0.1 5.08 2.2 2.82 10 max. Tolerance ±0.5mm unless otherwise specified www.recom-power.com REV: 0/2015 I-35 R-78Txx-1.0 Series INNOLINE DC/DC-Converter Package Style and Pinning (mm) R-78Txx-1.0/FC Pin Connections Pin # 1 2 3 Recommended Footprint 10.16 2.2 23 11.10 +Vin GND +Vout 11.10 10.16 Bottom View 25 Top 4.00 Bottom View 1 2 3 2.2 1.20± 0.1 2.54 2.54 Æ0.64±0.1 2.2 6.72 8 max. 5.08 R-78T Tolerance ±0.5mm unless otherwise specified The product information and specifications are subject to change without prior notice. RECOM products are not authorized for use in safety-critical applications (such as life support) without RECOM’s explicit written consent. A safety-critical application is defined as an application where a failure of a RECOM product may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The buyer 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. I-36 REV: 0/2015 www.recom-power.com