date 06/2010 page 1 of 5 a division of CUI INC SERIES: DESCRIPTION: V78XX-2000 DESCRIPTION The V78XX switching regulator series is designed to be a high efficiency drop-in replacement for 78XX linear regulators. Unlike linear regulators, the V78XX series does not require a heatsink, creating a much more compact solution. Built-in short-circuit and over-temperature protections ensure very rugged operations. Additionally, low ripple and noise performance make the parts useful in a wide range of applications. MODEL DC SWITCHING REGULATOR, NON-ISOLATED FEATURES •efficiency up to 92% •2A current output •operating temp: -40 ~ +85°C •short circuit protection •thermal shutdown •low ripple and noise •miniature SIP package, meets UL94-V0 requirement •ultra low power loss •negative output capacity •pin compatible to LM78XX series •MTBF >2,000,000 hours input voltage RoHS output voltage output current min (V dc) max (V dc) max (V dc) max. (mA) Vin (min) efficiency level Vin (max) V7802-2000 4.75 6.5 18 15 2.5 -2.5 2,000 -1,200 85 81 83 84 V7803-2000 4.75 6.5 18 16 3.3 -3.3 2,000 -1,200 87 82 86 86 V7805-2000 7 7 18 13 5 -5 2,000 -1,000 91 84 88 88 V7806-2000 8.5 7 18 13 6.5 -6.5 2,000 -800 92 87 91 90 *add suffix “R” for 90° pins, for example: V7802-2000R OUTPUT parameter conditions/description voltage accuracy at 100% load min nom max units ±2 ±3 % line regulation Vin = min to max at full load ±0.5 ±0.75 % load regulation 10% to 100% ±0.5 ±1.0 % 25 45 mVp-p 0.5 1.8 output ripple 20 MHz bandwidth, typical application circuit short circuit protection continuous, auto-restart short circuit input power current limit 5,000 switching frequency full load, input voltage range quiescent current positive output negative output 300 thermal shutdown temperature coefficient 340 380 KHz 5 11 10 13 mA mA 150 -40 ~ +85°C load capacitance 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 W mA °C ±0.03 %/°C 1,000 μF fax 503.612.2382 www.v-infinity.com date 06/2010 page 2 of 5 a division of CUI INC SERIES: DESCRIPTION: V78XX-2000 DC SWITCHING REGULATOR, NON-ISOLATED COMMON SPECIFICATIONS parameter conditions/description min operating temperature max units -40 nom 85 °C 100 °C -55 125 °C 95 % 300 °C operating case temperature storage temperature storage humidity cooling free air convection lead temperature case material plastic (UL94-V0) MTBF 2,000,000 hours package weight 4.0 g SAFETY parameter conditions/description conducted/radiated emissions EN55022 class B ESD EN61000-4-2 class A min nom max units MECHANICAL DRAWING V78XX-2000R 11.50[0.453] 9.00 [0.354] 0.50 [0.020] 11.50[0.453] 17.50 [0.689] 9.00 [0.354] 0.50 [0.020] V78XX-2000 17.50 [0.689] 4.10[0.161] 4.10 [0.161] 1.50 [0.059] 5.08 [0.200] 2.15 [0.085] 5.08 [0.200] (Bottom View) (Bottom View) 2.15 [0.085] 1 2 3 1 0.30 [0.012] 2 3 0.50 [0.020] Note: Unit:mm[inch] Pin section tolerances: 0.10mm[ 0.004inch] General tolerances: 0.25mm[ 0.010inch] 20050 SW 112th Ave. Tualatin, Oregon 97062 Note: Unit:mm[inch] Pin section tolerances: 0.10mm[ 0.004inch] General tolerances: 0.50mm[ 0.020inch] phone 503.612.2300 fax 503.612.2382 www.v-infinity.com date 06/2010 page 3 of 5 a division of CUI INC SERIES: DESCRIPTION: V78XX-2000 DC SWITCHING REGULATOR, NON-ISOLATED RECOMMENDED FOOTPRINT V78XX-2000 1.00 [0.039] 3 2.54 [0.100] 1 2 2.15 [0.085] 5.08 [0.200] V78XX-2000R 5.08 [0.200] 1.35 [0.053] FOOTPRINT DETAILS 1 Pin 1 Positive +Vin Negative 2 3 GND -Vout GND 2 3 +Vin +Vout 2.54 [0.100] 1.00 [0.039] DERATING CURVE EXTERNAL CAPACITOR TABLE Part Number C1 (Ceramic capacitor) C2 (Ceramic capacitor) V7802-2000 10µF/25V 22µF/6.3V V7803-2000 10µF/25V 22µF/6.3V V7805-2000 10µF/25V 22µF/16V V7806-2000 10µF/25V 22µF/16V Operating Temp.( C ) (Figure 1) TYPICAL APPLICATION CIRCUIT Positive and Negative Outputs Positive Output 1 Vin V78XX-2000 3 +Vout 1 +Vin C3 2 C1 C2 GND 1 C1 GND 1 +Vin C1 V78XX-2000 2 +Vout C4 2 V78XX-2000 2 Negative Output GND 3 GND GND GND V78XX-2000 3 C2 -Vout 20050 SW 112th Ave. Tualatin, Oregon 97062 3 C2 -Vout Note: 1. C1 and C2 are required and should be fitted close to the converter pins. 2. The capacitance of C1and C2 sees external capacitor table, it can be increased properly if required, and tantalum or low ESR electrolytic capacitors may also suffice. 3. No parallel connection or plug and play. phone 503.612.2300 fax 503.612.2382 www.v-infinity.com date 06/2010 page 4 of 5 a division of CUI INC SERIES: DESCRIPTION: V78XX-2000 DC SWITCHING REGULATOR, NON-ISOLATED INPUT FILTER CIRCUIT 1 0 u H-4 7 u H Vin Vo Vin Vout GND 10uF 10uF GND GND OUTPUT FILTER CIRCUIT 1 0 u H -4 7 u H Vin Vin Vo GND 10uF 22uF 10uF RL GND EMC RECOMMENDED CIRCUIT 1 mH Vin Vin Vo Vout GND 330 uF 2.2 uF 1u F GND GND 1mH 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 www.v-infinity.com date 06/2010 page 5 of 5 a division of CUI INC SERIES: DC SWITCHING REGULATOR, NON-ISOLATED DESCRIPTION: V78XX-2000 TEST CONFIGURATION Efficiency and Output Voltage Ripple Test 25. 4mm 25.4mm 12.7mm D C /D C C onverter 3 1 F 2 C1 +Vout Copper strip C2 10 F Ceramic Tantalum Scope Load 1 2.54 mm Vin GND Copper stri p Start-up and Load Transient Response Test 50 .8 mm DC /DC Converter 2 C1 +Vo ut Copper strip 3 Scope C2 Load 1 2.54 mm Vi n GND Copper strip EFFICIENCY AND RIPPLE CURVES Efficiency Ripple Ripple VS. Load(Vin=nominal) 100 95 90 85 80 75 70 V7802-2000 V7803-2000 V7805-2000 V7806-2000 37 32 R ip p le ( m V ) E f fic ie n c y (% ) Efficiency VS. Input voltage (full load) 65 60 27 V7802-2000 22 17 V7803-2000 V7805-2000 V7806-2000 12 7 2 4.75 5 6 6.5 7.2 8 9 10 12 15 18 20 200 400 600 800 1000 1200 1400 1600 1800 2000 Load(mA) Input voltage(V) Ripple VS. Input voltage(full load) Efficiency VS. Load(Vin=nominal) 34 30 100 V7802-2000 V7803-2000 V7805-2000 V7806-2000 80 70 60 50 200 400 600 800 1000 1200 1400 1600 1800 2000 R ip p le ( m V ) E fficiency(% ) 90 26 22 V7802-2000 V7803-2000 V7805-2000 V7806-2000 18 14 10 6 2 4.75 5 20050 SW 112th Ave. Tualatin, Oregon 97062 6 6.5 7.2 8 9 10 12 15 18 20 Input Voltage(V) Load(mA) phone 503.612.2300 fax 503.612.2382 www.v-infinity.com