Converter K78xx-5R Series Wide input voltage, non-isolated & regulated single output Patent Protection RoHS FEATURES Efficiency up to 96% Operating temperature range: -4 to + Low ripple & noise Supporting negative output perfectly Short circuit protection and overheat protection Subminiature SIP package, meeting requirements of UL94-V Pin-out compatible with LM78XX series EN6 approved K78xx-5R series are high efficiency switching regulators and ideal substitutes of LM78XX series three-terminal linear regulators. The product is featured with high efficiency, low loss, low radiation and no heat sink requirement. They are widely used in industrial control, instrumentation, and electric power applications. Selection Guide Certification CE Part No. K78-5R K78X-5R K78-5R Input Voltage (VDC) Output Efficiency (%/Typ.) Output Voltage Output Current (Min. Vin)/ (Max. Nominal Range (VDC) (ma) Vin) Max. Capacitive (μf) 4.-8.5 5 77/66 *4.-5 -.5-4 66/64 47 4.-8.8 5 8/69 *4.-5 -.8-4 7/68 47 4.-8.5 5 87/76 *4.-5 -.5-4 7/7 47 4 4.-8. 5 9/8 *4.-5 -. -4 74/78 47 4 6.5-5. 5 94/86 6.5-7 -5. -4 78/8 47 -- K78X5-5R 4 7-5. 5 94/86 CE K78X6-5R K789-5R K7-5R 4 8-6.5 5 94/87 6.5-5 -6.5-8/84 47 4-9. 5 /9 7.- -9. - /86 47 4 5-5 /9 7- - - 8/87 47 4 8-5 5 96/9 7-7 -5-8/87 47 Input Specifications Item Operating Conditions Min. Typ. Max. Unit No-load Power Consumption Input voltage range --..56 W Reverse Polarity Input Forbidden Input Filter Capacitor filter Output Specifications Item Operating Conditions Min. Typ. Max. Unit Output Voltage Accuracy % load, input voltage range -- ± ± Line Regulation Input voltage range -- ±. ±.4 % Regulation %-% load -- ±.4 ±.6 4.9.5-A/ Page of 5
Converter K78xx-5R Series Ripple & Noise* MHz bandwidth Positive output -- (refer to Fig. ) Negative output -- 5 mvp-p Temperature Drift Coefficient -4 to + -- -- ±. %/ Over temperature Protection IC built-in -- -- 6 Output short circuit protection Continuous, self-recovery Transient response deviation -- 55 5 mv Nominal input, 5% load step change Transient recovery time --.5 ms Thermal impedance -- -- / W Note: * Ripple and noise tested with parallel cable method, please see DC-DC Converter Application Notes for specific operation methods. General Specifications Item Operating Condition Min. Typ. Max. Unit Operating Temperature Derating if the temperature 7 (see Fig. ) -4 -- Storage Temperature -55 -- 5 Max. Operating Temperature for casing Within the operating temperature curve -- -- Pin Welding Resistance Temperature Welding spot is.5mm away from the casing, seconds -- -- Storage Humidity Non-condensing -- -- %RH Switching Frequency % load, input voltage range 8 45 KHz MTBF MIL-HDBK-7F@5 -- -- Khours Safety-regulated Certification EN6 Physical Specifications Casing Material Package Dimensions Weight Cooling Method EMC Specifications EMI EMS Black flame-retardant and heat-resistant plastic (UL94-V).6*7.55*.6 mm.g (Typ.) Free air convection Conducted Disturbance CISPR/EN55 CLASS B (see Fig. 6- for recommended circuit) Radiated Emission CISPR/EN55 CLASS B (see Fig. 6- for recommended circuit) Electrostatic Discharge IEC/EN 6-4- Contact ±4KV perf. Criteria B Radiation Immunity IEC/EN 6-4- V/m perf. Criteria A EFT IEC/EN 6-4-4 ±KV (see Fig. 6- for recommended circuit) perf. Criteria B Surge Immunity IEC/EN 6-4-5 ±KV (see Fig. 6- for recommended circuit) perf. Criteria B Conducted Disturbance Immunity IEC/EN 6-4-6 Vr.m.s perf. Criteria A Voltage dip, drop and short interruption IEC/EN 6-4-9 %-7% perf. Criteria B Product Characteristic Curve Temperature Derating Curve 8 6 Safe Operating Area 4-4 4 7 Operating Temperature ( ) Fig. 4.9.5-A/ Page of 5
Converter K78xx-5R Series Positive output character curve Efficiency Vs Input Voltage (Full ) Efficiency Vs Output (Vin=nominal) 9 8 9 8 7 7 4. 6 9 5 8 4 6 8 65 4 5 6 7 8 9 Ripple Vs Input Voltage (Full ) 4 Ripple Vs Output (Vin=nominal) 5 5 6 8 5 4 4. 6 9 5 8 4 6 8 4 5 6 7 8 9 Negative output character curve Efficiency Vs Input Voltage (Full ) 9 8 7 4. 6 9 5 8 4 6 8 Ripple Vs Input Voltage (Full ) 5 5 5 4. 6 9 5 8 4 6 8 Efficiency Vs Output (Vin=nominal) 9 8 7 65 6 55 5 4 5 6 7 8 9 Ripple Vs Output (Vin=nominal) 4 6 8 4 4 5 6 7 8 9 Design Reference. Typical application circuit Vin C +Vo GN D C - Fig. Positive output application circuit Fig. Negative output application circuit 4.9.5-A/ Page of 5
Converter K78xx-5R Series + C C4 LDM - C Fig. 4 Positive and Negative output parallelling application circuit Part No. K78-5R K78X-5R K78-5R K78X5-5R K78X6-5R K789-5R K7-5R C,C (ceramic capacitor) μf/5v,c4 (ceramic capacitor) μf/6.v μf/6.v μf/6.v μf/6.v μf/v μf/v μf/6v μf/6v μf/5v μf/5v Note:. When the products used as negative output and the input-voltage under (Vin-min+V),C and must be added in the circuit, and they should be placed as near as the products' footprints. Others apply to the application-environment.. The capacitance of C, sees external capacitor table, it can be increased properly if required, and tantalum or low ESR electrolytic capacitors may also suffice.. When the products used as the circuit like figure 7,an inductor named as LDM up to μh, is recommended in the circuit to reduce the mutual interference. 4. For the product of output voltage is below.v or at.v, if the input voltage of model s negative output is less than 4.V, The output need to add a dummy load of not less than 5mA. 5. Cannot use in parallel for output and hot swap for input. To reduce the output ripple furtherly, it is suggested to connect a LC filter at the output terminal, and recommended value of L is μh-47μh. () L C () μf Fig. 5. EMC solution-recommended circuit V in FUSE LDM LDM Vin +Vo MOV + C C C Fig. 6 Recommended EMC circuit LOAD Fig.7 Recommended EMC circuit-pcb layout FUSE MOV LDM C C/ C LDM Selected based on the actual input current from the customer SK5 8μH 68μF /5V Refer to Fig. 4.7μF /5V μh Note: Part in the Fig. is for EMS test, part is for EMI filtering; parts and can be added based on actual requirement.. Test Configurations (TA=5 ) ) Efficiency and Output Voltage Ripple Test () 5.4mm 5.4mm.7mm C () μf μf Scope Ceramic Tant alum.54 mm Fig. 8 4.9.5-A/ Page 4 of 5
Converter K78xx-5R Series ).Start-up and Transient Response Test 5.8 mm () C () Scope Fig. 9.54 mm 4. For more information please find the application notes on www.mornsun-power.com Dimensions and Recommended Layout Notes:. Packing Information please refer to 'Product Packing Information'. Packing bag number: 58;. The max. capacitive load should be tested within the input voltage range and under full load conditions;. Unless otherwise specified, data in this datasheet should be tested under the conditions of Ta=5 C, humidity<% when inputting nominal voltage and outputting rated load; 4. All index testing methods in this datasheet are based on our Company s corporate standards; 5. The performance indexes of the product models listed in this manual are as above, but some indexes of non-standard model products will exceed the above-mentioned requirements, and please directly contact with our technician for specific information; 6. We can provide product customization service; 7. Specifications of this product are subject to changes without prior notice. Mornsun Guangzhou Science & Technology Co., Ltd. Address: No. 5, Kehui St., Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District, Guangzhou, P. R. China Tel: 86--86-88 Fax: 86--867 E-mail: info@mornsun.cn 4.9.5-A/ Page 5 of 5