date 07/2010 page 1 of 5 a division of CUI INC SERIES: DESCRIPTION: V78XX-1000 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 97% •1A 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) V7803-1000 4.75 4.75 28 28 3.3 -3.3 1,000 -600 90 80 83 82 V7805-1000 6.5 7 32 27 5.0 -5.0 1,000 -600 93 85 88 87 V7806-1000 9 7 32 25 6.5 -6.5 1,000 -400 94 88 90 90 V7809-1000 12 7 32 23 9.0 -9.0 1,000 -400 95 89 92 91 V7812-1000 16 7 32 20 12 -12 1,000 -300 96 89 94 91 V7815-1000 20 7 32 17 15 -15 1,000 -300 97 87 94 92 *add suffix “R” for 90° pins, for example: V7803-1000R OUTPUT parameter conditions/description voltage accuracy at 100% load line regulation min nom max units ±2 ±3 % Vin = min to max at full load ±0.2 ±0.4 % load regulation 10% to 100% ±0.4 ±0.6 % output ripple 20 MHz bandwidth, typical application circuit 25 35 mVp-p short circuit protection continuous, auto-restart 0.5 1.8 W 340 380 KHz 5 7 8 13 mA mA ±0.02 %/°C 1,000 μF short circuit input power current limit 2,000 switching frequency full load, input voltage range quiescent current positive output negative output 300 thermal shutdown temperature coefficient mA 150 -40 ~ +85°C load capacitance 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 °C fax 503.612.2382 www.v-infinity.com date 07/2010 page 2 of 5 a division of CUI INC SERIES: DESCRIPTION: V78XX-1000 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 1.5 mm from the case for 10 seconds case material plastic (UL94-V0) MTBF 2,000,000 hours package weight 3.7 g MECHANICAL DRAWING V78XX-1000 V78XX-1000R 11.50[0.453] 9.00 [0.354] 9.00 [0.354] 17.50 [0.689] 0.50 [0.020] 17.50 [0.689] 0.50 [0.020] 11.50[0.453] 4.10 [0.161] 1.50 [0.059] 4.10[0.161] 5.08 [0.200] 2.15 [0.085] 5.08 [0.200] (Bottom View) (Bottom View) 1 2.15 [0.085] 1 2 3 2 3 0.30 [0.012] 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: 0.25mm[ 0.010inch] phone 503.612.2300 fax 503.612.2382 www.v-infinity.com date 07/2010 page 3 of 5 a division of CUI INC SERIES: DESCRIPTION: V78XX-1000 DC SWITCHING REGULATOR, NON-ISOLATED RECOMMENDED FOOTPRINT V78XX-1000 5.08 [0.200] 1.00 [0.039] 3 1.35 [0.053] FOOTPRINT DETAILS 2.54 [0.100] 1 2 2.15 [0.085] 5.08 [0.200] V78XX-1000R Negative Pin Positive 1 +Vin +Vin 2 GND -Vout 3 +Vout GND 2.54 [0.100] 1.00 [0.039] DERATING CURVE EXTERNAL CAPACITOR TABLE Temperature Derating Graph Part Number Operating Temp.( C ) TYPICAL APPLICATION CIRCUIT 1 Vin V78XX-1000(R) 3 C1,C3 C2,C4 (Ceramic capacitor) (Ceramic capacitor) V7803-1000(R) 10µF/50V 22µF/6.3V V7805-1000(R) 10µF/50V 22µF/10V V7806-1000(R) 10µF/50V 10µF/10V V7809-1000(R) 10µF/50V 10µF/16V V7812-1000(R) 10µF/50V 10µF/25V V7815-1000(R) 10µF/50V 10µF/25V APPLICATION EXAMPLE +Vout 1 +Vin C3 V78XX-1000(R) 3 +Vout C4 2 2 C1 GN D C2 GN D 1 GND V78XX-1000(R) 2 C1 3 C2 GND GND -Vout 1 +Vin C1 V78XX-1000(R) 2 1. C1 and C2 are required and should be fitted close to the converter pins. 3 C2 -Vout 20050 SW 112th Ave. Tualatin, Oregon 97062 2. The capacitance of C1, C2, C3 and C4 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 07/2010 page 4 of 5 a division of CUI INC SERIES: DC SWITCHING REGULATOR, NON-ISOLATED DESCRIPTION: V78XX-1000 OUTPUT RIPPLE REDUCTION 1 DC/DC Converter 3 2 C1 L +Vout Load Vin C2 22 F GND To reduce output ripple, it is recommended to add a LC filter in output port. L: Recommended parameter 10 H ~ 47 H. TEST CONFIGURATION Efficiency and Output Voltage Ripple Test 25.4mm 25.4mm 12.7mm 1 F 2 C1 Copper strip C2 +Vout 10 F Ceramic Tantalum Scope Load 3 Load DC/DC Converter 2.54 mm 1 2.54 mm Vin GND Copper strip Start-up and Load Transient Response Test 50.8 mm Vin 1 DC/DC Converter C1 2 Copper strip 3 +Vout Scope C2 GND Copper strip 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 www.v-infinity.com date 07/2010 page 5 of 5 a division of CUI INC SERIES: DC SWITCHING REGULATOR, NON-ISOLATED DESCRIPTION: V78XX-1000 EFFICIENCY AND RIPPLE CURVES Efficiency Ripple Ripple (mV) Efficiency(%) 40 100 35 90 80 70 V7803-1000 30 V7805-1000 25 V7812-1000 V7806-1000 20 V7809-1000 15 V7803-1000 V7805-1000 V7812-1000 V7806-1000 V7809-1000 V7815-1000 10 V7815-1000 60 4.75 8 12 16 20 24 28 32 5 Vin(V) 4.75 Efficiency VS Vin(Full Load) 8 12 16 20 24 28 32 Vin (V) Ripple VS Vin ( Full Load) Efficiency(%) Ripple(mV) 20 100 95 15 90 V7803-1000 V7803-1000 85 V7805-1000 V7805-1000 10 V7812-1000 V7806-1000 V7812-1000 80 V7806-1000 75 V7809-1000 5 V7809-1000 V7815-1000 V7815-1000 70 0 65 40 80 80 200 400 600 800 1000 Load(mA) Efficiency VS Load(Vin=Vin_min) 40 Efficiency(%) 200 400 600 800 1000 Load(mA) Ripple VS Load(Vin=Vin_min) Ripple(mV) 35 100 30 90 25 V7803-1000 80 V7805-1000 V7812-1000 70 V7806-1000 V7803-1000 V7805-1000 20 15 V7812-1000 V7806-1000 10 V7809-1000 V7809-1000 60 V7815-1000 50 V7815-1000 5 0 40 80 200 400 600 800 1000 Load(mA) Efficiency VS Load(Vin=Vin_max) 20050 SW 112th Ave. Tualatin, Oregon 97062 40 80 200 400 600 800 1000 Load(mA) Ripple VS Load(Vin=24V) phone 503.612.2300 fax 503.612.2382 www.v-infinity.com