Additional Resources: Product Page 3D Model PCB Footprint date 09/17/2021 page 1 of 6 SERIES: VXO78-500-M DESCRIPTION: NON-ISOLATED DC SWITCHING REGULATOR FEATURES ultra-thin SMD Package, thickness 3.5 mm open frame high efficiency up to 95% no-load input current as low as 0.2 mA wide temperature range: -40C ~ +85C output short-circuit protection 3 input output output output ripple efficiency MODEL 1 2 voltage voltage current power & noise typ range max max max typ (Vdc) (Vdc) (Vdc) (mA) (W) (mVp-p) (%) VXO7803-500-M 24 4.75~36 3.3 500 1.65 50 86 90 VXO7805-500-M 24 6.5~36 5 500 2.5 50 VXO7809-500-M 24 12~36 9 500 4.5 50 93 VXO7812-500-M 24 15~36 12 500 6 50 94 VXO7815-500-M 24 19~36 15 500 7.5 50 95 Notes: 1. For input voltages higher than 30 Vdc, a 22 F / 50 V input capacitor is required. 2. Tested at nominal input, 20~100% load for 3.3 Vdc model, 20 MHz bandwidth, with 10 F electrolytic and 1 F ceramic capacitor on the output. At loads below 10%, the max ripple and noise of the 3.3 & 5 Vdc outputs will be 150 mVp-p, and the other outputs will be 2% Vo. 3. Measured at min Vin, full load. 4. All specifications are measured at Ta=25C, humidity < 75%, nominal input voltage, and rated output load unless otherwise specified. PART NUMBER KEY VXO78 XX - 500 - M Base Number Output Current Output Voltage cui.comAdditional Resources: Product Page 3D Model PCB Footprint CUI Inc SERIES: VXO78-500-M DESCRIPTION: NON-ISOLATED DC SWITCHING REGULATOR date 09/17/2021 page 2 of 6 INPUT parameter conditions/description min typ max units 1 operating input voltage for positive output applications 24 36 Vdc filter capacitor filter input reverse polarity protection no no-load input current positive outputs 0.2 1.5 mA module on Ctrl pin open or pulled high (TTL 3.2-8VDC) 2 Ctrl* module off Ctrl pin pulled low to GND (0-0.8VDC) input current when off 30 100 A Note: 1. See Model section on page 1 for specific input voltage ranges. 2. The Ctrl pin voltage is referenced to input GND. OUTPUT parameter conditions/description min typ max units 3 maximum capacitive load for positive output applications 680 F at full load, input voltage range voltage accuracy 3.3 Vdc output model 2 4 % all other models 2 3 % line regulation at full load, input voltage range 0.2 0.4 % at nominal input, 10~100% load load regulation 3.3 Vdc output model 0.6 % all other models 0.3 % switching frequency at nominal input voltage, full load 700 kHz transient recovery time at nominal input voltage, 25% load step change 0.2 1 ms transient response deviation at nominal input voltage, 25% load step change 50 200 mV temperature coefficient at full load 0.03 %/C Note: 3. The maximum capacitive load was tested at nominal input voltage, full load. PROTECTIONS parameter conditions/description min typ max units short circuit protection continuous, auto recovery SAFETY AND COMPLIANCE parameter conditions/description min typ max units safety approvals EN62368-1 conducted emissions CISPR32/EN55032 Class B (see Fig. 4-2 for recommended circuit) radiated emissions CISPR32/EN55032 Class B (see Fig. 4-2 for recommended circuit) ESD IEC/EN61000-4-2, contact 4kV, perf. Criteria B radiated immunity IEC/EN61000-4-3, 10V/m, perf. Criteria A EFT/burst IEC/EN61000-4-4, 1kV (see Fig. 4-1 for recommended circuit), perf. Criteria B surge IEC/EN61000-4-5, line-line 1kV (see Fig. 4-1 for recommended circuit), perf. Criteria B conducted immunity IEC/EN61000-4-6, 3 Vr.m.s, perf. Criteria A MTBF as per MIL-HDBK-217F, 25C 2,000 K hours RoHS 2011/65/EU cui.com