date 11/23/2011 page 1 of 6 SERIES: V78-1000-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR FEATURES • • • • • • • • 1 A current output high efficiency up to 92% no heat sink required SMT package remote on/off control low ripple and noise short circuit protection, thermal shutdown wide temperature( -40°C~+85°C) RoHS input voltage output voltage output current output power ripple and noise1 efficiency level2 range (Vdc) (Vdc) (mA) max (W) max (mVp-p) typ (%) V7802-1000-SMT 5 ~ 18 2.5 1,000 2.5 35 82 V7803-1000-SMT 5 ~ 18 3.3 1,000 3.3 35 84 V7805-1000-SMT 7 ~ 18 5.0 1,000 5 35 90 V7806-1000-SMT 8.5 ~ 18 6.5 1,000 6.5 35 92 MODEL Notes: 1. 20 MHz bandwidth 2. Measured at Vin min. and 100% load PART NUMBER KEY V78 XX - XXXX -SMT Base Number Output Voltage cui.com Output Current CUI Inc │ SERIES: V78-1000-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 11/23/2011 │ page 2 of 6 INPUT parameter conditions/description min typ max units operating input voltage 2.5, 3.3 V models 5.0 V model 6.5 V model 5.0 7.0 8.5 12 12 12 18 18 18 Vdc Vdc Vdc input filter capacitor remote on/off on: off: open or 1.2 < Vc ≤ 6 V Vc < 0.6 V on/off control current on: off: open or 1.2 < Vc ≤ 6 V GND or Vc < 0.4 V 10 100 μF 200 μA OUTPUT parameter conditions/description typ max units line regulation measured from low line to high line at 100% load ±0.2 ±0.5 % load regulation measured from 10% to full load at nominal input ±0.4 ±1.0 % voltage accuracy measured from low line to high line at 100% load ±2 ±3 % adjustability1 2.5 3.3 5.0 6.5 3.9 5.5 6.5 Vdc Vdc Vdc switching frequency PWM type temperature coefficient -40°C ~ +85°C ambient ±0.02 %/°C V V V V min model model model models, fixed output 1.5 1.8 2.5 1.4 quiescent current 1 max capacitance load Notes: MHz 3 mA 1,000 μF max units 1. Output voltage adjustment must meet Vin-Vo > 2V requirement, see adjustment resistor values on page 4. PROTECTIONS parameter conditions/description short circuit protection continuous, automatic recovery (hiccup mode) min thermal shutdown internal IC junction current limit typ 150 °C 1.8 A SAFETY AND COMPLIANCE parameter conditions/description min typ thermal resistance EMI/EMC EN55022, class A and class B (refer to page 4), IEC/EN 61000-4-2 Criteria B, IEC/EN 61000-4-4 Criteria B, IEC/EN 61000-4-5 Criteria B (refer to page 4) RoHS compliant yes MTBF 25°C (MIL-HDBK-217K) max units 90 °C/W 1,000,000 hours ENVIRONMENTAL parameter conditions/description min case operating temperature operating temperature power derating above 71°C storage temperature storage humidity cui.com typ max units 100 °C -40 85 °C -55 125 °C 95 % CUI Inc │ SERIES: V78-1000-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 11/23/2011 │ page 3 of 6 MECHANICAL parameter conditions/description dimensions 15.24 x 8.50 x 7.25 mm (0.600 x 0.335 x 0.285 inch) case material Plastic (UL94-V0) min weight typ max units 2.3 g MECHANICAL DRAWING units: mm [in] pin tolerance: ±0.10 mm [±0.004 in] general tolerance: ±0.25 mm [±0.010 in] 2.54 0.100 10 9 7 6 12.10 0.476 1 5 10.16 0.400 15.24 0.600 1.13 0.044 8.50 0.335 0.25 0.010 5° max 7.25 0.285 7.00 0.276 DETAIL A SCALE 10 : 1 A 11.02 [0.434] RECOMMENDED FOOTPRINT 10 9 1 7 6 5 1.00 [0.039] cui.com 2.54 [0.100] 1.80 [0.071] 2.54 [0.100] PIN CONNECTIONS 1 +Vin 7,9 GND 5 +Vout 6 Vadj 10 On/Off CUI Inc │ SERIES: V78-1000-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR TYPICAL APPLICATION CIRCUIT DERATING CURVE V7805-1000-SMT 120 Vo u t 5 1 7,9 10 100 6 Output Power (%) Vin date 11/23/2011 │ page 4 of 6 R1 C1 C2 ON/OFF GND C4 470pF R2 GND 1. C1 and C2 are required for best performance and should be fitted close to the converter pins. 80 60 Safe Operating Area 40 20 2. See the capacitor values for C1 and C2 in the external capacitor table below. These can be increased if required and tantalum or low ESR electrolytic capacitors will also suffice. 0 -40 0 40 71 85 120 Operating Temperature (°C) 3. No parallel connection or plug and play. EXTERNAL CAPACITOR TABLE C1 (Ceramic) REFLOW SOLDERING PROFILE C2 (Ceramic) V7802-1000-SMT 10 μF / 25 V 22 μF / 16 V V7803-1000-SMT 10 μF / 25 V 22 μF / 16 V V7805-1000-SMT 10 μF / 25 V 22 μF / 16 V V7806-1000-SMT 10 μF / 25 V 22 μF / 16 V 2 50 APPLICATION EXAMPLE 1 C1 DC/DC Converter 7 ,9 5 90 S ec Max (>2 2 0 C) 1 50 100 50 +Vo u t 6 0 C2 22 F C4 2 00 L Load Vin P ea k .Te m p 2 4 0 C 10 Se c M ax 220 C Temperature (°C) MODEL 470pF GND To reduce output ripple, it is recommended to add a LC filter to the output port. L: Recommended parameter 10 ~ 47μH. cui.com Time (seconds) CUI Inc │ SERIES: V78-1000-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 11/23/2011 │ page 5 of 6 ADJUSTMENT RESISTOR VALUES MODEL V7802 V7803 V7805 Vo (nominal) 2.5 V 3.3 V 5.0 V Vadj (V) R1 (kΩ) R2 (kΩ) R1 (kΩ) R2 (kΩ) R1 (kΩ) R2 (kΩ) 1.5 51.1 - - - - - 1.8 104.3 - 15.4 - - - 2.5 - - 87 - 9.7 - 3.0 - 88.7 339 - 30.5 - 3.3 - 41.3 - - 48.8 - 3.6 - 20.1 - 121 75 - 3.9 - 8.0 - 51.0 115 - 4.5 - - - 16.6 338 - 4.9 - - - 8.0 1,835 - 5.0 - - - 6.5 - - 5.1 - - - 5.2 - 426 5.5 - - - 1.1 - 58.7 6.0 - - - - - 16.9 6.5 - - - - - 3.2 The R1, R2 in the above table are used to set the output voltage. If no need to adjust the output voltage, connect a ceramic capacitor to GND with 470pF typical value for increase immunity. Insure the output voltage is in the adjust range or else may cause permanent damage to the device. Fine-tune output voltage must appease Vin-Vo>2V. EMC RECOMMENDED CIRCUIT L1 +Vin V7805-1000-SMT 5 1 10 T VS L2 V7805-1000-SMT 5 1 6 10 C1 7,9 + Vo 6 C3 RL ON/O FF GN D 7,9 +Vin + Vo RL O N/O FF C2 47 0p F GND GND TVS: SMCJ18A, 1500W L1: 68 μH C1: 680 μF / 50 V electrolytic capacitors L2: 516 μH C3: 1 μF / 50 V ceramic capacitor cui.com C4 470 pF G ND CUI Inc │ SERIES: V78-1000-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 11/23/2011 │ page 6 of 6 REVISION HISTORY rev. 1.0 description date initial release 11/23/2011 The revision history provided is for informational purposes only and is believed to be accurate. Headquarters 20050 SW 112th Ave. Tualatin, OR 97062 800.275.4899 Fax 503.612.2383 cui.com [email protected] CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website. CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use. CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.