Additional Resources: Product Page 3D Model PCB Footprint date 09/21/2021 page 1 of 7 SERIES: VX78-1000 DESCRIPTION: NON-ISOLATED DC SWITCHING REGULATOR FEATURES wide input pin-out compatible with linear regulators encapsulated UL & CSA approved high efficiency up to 96% no-load input current as low as 0.2 mA wide operating temp: -40C to +85C supports negative output short circuit protection on the output EN 62368-1 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) (%) VX7803-1000 24 6~36 3.3 1000 3.3 75 90 24 8~36 5 1000 5 75 93 VX7805-1000 12 8~27 -5 -500 2.5 75 86 VX78039-1000 24 13~36 9 1000 9 75 95 24 16~36 12 1000 12 75 96 VX78012-1000 12 8~20 -12 -300 3.6 75 89 24 20~36 15 1000 15 75 96 VX7815-1000 12 8~18 -15 -300 4.5 75 89 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, 20 MHz bandwidth, with 10 F electrolytic and 1 F ceramic capacitor on the output. At loads below 20%, the max ripple and noise of the 3.3 & 5 Vdc outputs will be 100 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 VX78 XX - 1000 Base Number Output Voltage Output Current cui.comAdditional Resources: Product Page 3D Model PCB Footprint CUI Inc SERIES: VX78-1000 DESCRIPTION: NON-ISOLATED DC SWITCHING REGULATOR date 09/21/2021 page 2 of 7 INPUT parameter conditions/description min typ max units for positive output applications 6 24 36 Vdc 1 operating input voltage for negative output applications 8 12 27 Vdc filter capacitor filter input reverse polartiy protection no no-load input current positive outputs 0.1 1 mA Note: 1. See Model section on page 1 for specific input voltage ranges. OUTPUT parameter conditions/description min typ max units for positive output applications 680 F 2 maximum capacitive load for negative output applications 330 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 % load regulation at nominal input, 10~100% load 0.4 0.6 % at nominal input voltage, full load switching frequency 3.3/5 Vdc output models 420 520 620 kHz all other models 580 680 780 kHz transient recovery time at nominal input voltage, 25% load step change 0.1 1 ms transient response deviation at nominal input voltage, 25% load step change 50 300 mV temperature coefficient at full load 0.03 %/C Note: 2. 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 certified to 62368-1: EN safety approvals certified to 60950-1: UL EMI/EMC EN 55032, EN 55024 conducted emissions CISPR22/EN55022, class B (external circuit required, see Figure 4-b) radiated emissions CISPR22/EN55022, class B (external circuit required, see Figure 4-b) ESD IEC/EN61000-4-2, contact 4kV, class B radiated immunity IEC/EN61000-4-3, 10V/m, class A EFT/burst IEC/EN61000-4-4, 1kV, class B (external circuit required, see Figure 4-a) surge IEC/EN61000-4-5, line-line 1kV, class B (external circuit required, see Figure 4-a) conducted immunity IEC/EN61000-4-6, 3 Vr.m.s, class A MTBF as per MIL-HDBK-217F, 25C 2,000,000 hours RoHS 2011/65/EU cui.com