Additional Resources: Product Page | 3D Model | PCB Footprint
date 06/24/2019
page 1 of 6
SERIES: V78-1000-SMT DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
FEATURES
1 A current output
high efficiency up to 93%
no heat sink required
SMT package
remote on/off control
low ripple and noise
short circuit protection, thermal shutdown
wide temperature (-40C~+85C)
RoHS
input output output output ripple and efficiency
MODEL
1 2
voltage voltage current power noise level
range max max typ
(Vdc) (Vdc) (mA) (W) (mVp-p) (%)
V7801-1000-SMT* 4.75 ~ 15 1.5 1,000 1.5 35 76
V7801A-1000-SMT* 4.75 ~ 15 1.8 1,000 1.8 35 79
V7802-1000-SMT* 5 ~ 18 2.5 1,000 2.5 35 83
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 93
Notes: 1. 20 MHz bandwidth
2. Measured at Vin min. and 100% load
*. Discontinued model
PART NUMBER KEY
V78 XX - XXX -SMT- X
Base Number Output Voltage Output Current Package Optionsblan = standard
TR = Tape & Reel
cui.comAdditional Resources: Product Page | 3D Model | PCB Footprint
CUI Inc SERIES: V78-1000-SMT DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 06/24/2019 page 2 of 6
INPUT
parameter conditions/description min typ max units
1.5, 1.8 Vdc models 4.75 12 15 Vdc
2.5, 3.3 Vdc models 5.0 12 18 Vdc
operating input voltage
5.0 Vdc model 7.0 12 18 Vdc
6.5 Vdc model 8.5 12 18 Vdc
input filter capacitor 10 F
on: open or 1.2 < Vc 6 V
remote on/off
off: Vc < 0.6 V
on: open or 1.2 < Vc 6 V
on/off control current 100 200 A
off: GND or Vc < 0.4 V
shutdown input current 120 200 A
OUTPUT
parameter conditions/description min typ max units
max capacitive load 1,000 F
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 %
1.8 Vdc model 1.5 3.6 Vdc
2.5 Vdc model 1.5 3.9 Vdc
1
adjustability
3.3 Vdc model 1.8 5.5 Vdc
5.0 Vdc model 2.5 6.5 Vdc
switching frequency PWM type 1.4 MHz
temperature coefficient -40 C ~ +85 C ambient 0.02 %/C
Notes: 1. Output voltage adjustment must meet Vin-Vo > 2V requirement, see adjustment resistor values on page 4. Not availabe on 1.5 or 6.5 Vdc output models.
PROTECTIONS
parameter conditions/description min typ max units
short circuit protection hiccup, continuous, automatic recovery
thermal shutdown internal IC junction 150 C
current limit 1.8 A
SAFETY AND COMPLIANCE
parameter conditions/description min typ max units
thermal resistance 90 C/W
CISPR22/EN55022 class A (without external circuit)
conducted emissions
CISPR22/EN55022 class B (external circuit required, see Figure 1-b)
CISPR22/EN55022 class A
rediated emissions
(external circuit required, see Figure 1-b)
IEC/EN 61000-4-2, class B, contact 6KV/ Air
ESD
8KV
radiated immunity IEC/EN 61000-4-3, class A, 10V/m
IEC/EN 61000-4-4, class B, 2KV
EFT/burst
(external circuit required, see Figure 1-a)
IEC/EN 61000-4-5, class B, 2KV
surge
(external circuit required, see Figure 1-a)
conducted immunity IEC/EN 61000-4-6, class A, 3 Vr.ms
voltage dips & interruptions IEC/EN 61000-4-29, class B, 0%-70%
MTBF as per MIL-HDBK-217F, 25 C 1,000,000 hours
RoHS 2011/65/EU
cui.com