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date
09/16/2020
page
1 of 6
SERIES: V78-1000-SMT Ϳ 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 (-40°C~+85°C)
U
ED
•
•
•
•
•
•
•
•
input
voltage
output
voltage
range
(Vdc)
(Vdc)
V7801-1000-SMT*
4.75 ~ 15
V7801A-1000-SMT*
4.75 ~ 15
5 ~ 18
V7803-1000-SMT
5 ~ 18
V7805-1000-SMT
7 ~ 18
V7806-1000-SMT*
Notes:
output
power
ripple and
noise1
HϒFLHQF\
level2
(mA)
max
(W)
max
(mVp-p)
W\S
(%)
1.5
1,000
1.5
35
76
1.8
1,000
1.8
35
79
2.5
1,000
2.5
35
83
3.3
1,000
3.3
35
84
5.0
1,000
5
35
90
6.5
1,000
6.5
35
93
O
N
V7802-1000-SMT*
output
current
TI
MODEL
N
RoHS
8.5 ~ 18
1. 20 MHz bandwidth
2. Measured at Vin min. and 100% load
*. Discontinued model
IS
C
PART NUMBER KEY
Output Voltage
Output Current
D
Base Number
V78 XX - XXX -SMT- X
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Package Options
"blank" = standard
TR = Tape & Reel
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CUI Inc Ϳ SERIES: V78-1000-SMT Ϳ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 09/16/2020 Ϳ page 2 of 6
INPUT
conditions/description
min
W\S
max
units
operating input voltage
1.5, 1.8 Vdc models
2.5, 3.3 Vdc models
5.0 Vdc model
6.5 Vdc model
4.75
5.0
7.0
8.5
12
12
12
12
15
18
18
18
Vdc
Vdc
Vdc
Vdc
LQSXW¿OWHU
capacitor
UHPRWHRQRϑ
on:
Rϑ
RSHQRU9F9
Vc < 0.6 V
RQRϑFRQWUROFXUUHQW
on:
Rϑ
RSHQRU9F9
GND or Vc < 0.4 V
10
µF
100
200
µA
120
200
µA
U
shutdown input current
OUTPUT
parameter
ED
parameter
conditions/description
min
W\S
N
max capacitive load
max
units
1,000
µF
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
adjustability1
1.8
2.5
3.3
5.0
switching frequency
PWM type
WHPSHUDWXUHFRHϒFLHQW
-40 °C ~ +85 °C ambient
±2
1.5
1.5
1.8
2.5
TI
model
model
model
model
±3
%
3.6
3.9
5.5
6.5
Vdc
Vdc
Vdc
Vdc
1.4
MHz
±0.02
%/°C
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.
N
Notes:
Vdc
Vdc
Vdc
Vdc
PROTECTIONS
conditions/description
short circuit protection
hiccup, continuous, automatic recovery
thermal shutdown
internal IC junction
current limit
CO
parameter
min
W\S
max
units
150
°C
1.8
A
SAFETY AND COMPLIANCE
parameter
conditions/description
min
thermal resistance
rediated emissions
CISPR22/EN55022 class A
(external circuit required, see Figure 1-b)
ESD
IEC/EN 61000-4-2, class B, contact ±6KV/ Air
±8KV
radiated immunity
IEC/EN 61000-4-3, class A, 10V/m
EFT/burst
IEC/EN 61000-4-4, class B, ±2KV
(external circuit required, see Figure 1-a)
surge
IEC/EN 61000-4-5, class B, ±2KV
(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
RoHS
2011/65/EU
max
units
90
°C/W
D
IS
conducted emissions
CISPR22/EN55022 class A (without external circuit)
CISPR22/EN55022 class B (external circuit required, see Figure 1-b)
W\S
1,000,000
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CUI Inc Ϳ SERIES: V78-1000-SMT Ϳ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 09/16/2020 Ϳ page 3 of 6
ENVIRONMENTAL
parameter
conditions/description
min
W\S
opertaing temperature
see derating curve
-40
storage temperature
-55
storage humidity
hand soldering
for 10 seconds
UHÀRZVROGHULQJ
refer to IPC/JEDEC J-STD-020D.1
MECHANICAL
conditions/description
dimensions
15.24 x 8.30 x 7.25
(0.600 x 0.327 x 0.285)
case material
Plastic (UL94-V0)
W\S
2.3
N
weight
min
units: mm [in]
pin tolerance: ±0.10 mm [±0.004 in]
general tolerance: ±0.25 mm [±0.010 in]
+Vin
GND
5
+Vout
6
Vadj
10
2Q2ϑ
D
IS
C
O
1
7,9
N
PIN CONNECTIONS
TI
MECHANICAL DRAWING
units
100
°C
85
°C
125
°C
95
%
260
°C
240
°C
max
units
U
parameter
max
ED
case operating temperature
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mm
inches
g
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CUI Inc Ϳ SERIES: V78-1000-SMT Ϳ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
TYPICAL APPLICATION CIRCUIT
DERATING CURVE
7,9
100
6
R1
C1
ON/OFF
GND
C4
470pF
Output Power (%)
10
120
Vo u t
5
1
C2
R2
GND
1. C1 and C2 are required for best performance and should
EH¿WWHGFORVHWRWKHFRQYHUWHUSLQV
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
VXϒFH
10 µF / 25 V
22 µF / 16 V
10 µF / 25 V
22 µF / 16 V
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
U
N
DC/DC
Converter
5
L
+Vo u t
IS
C
1
C1
7 ,9
6
C4
C2
470pF
22 F
Load
Vin
O
APPLICATION EXAMPLE
-40
0
TI
V7801-1000-SMT
V7801A-1000-SMT
20
Safe Operating Area
N
C2 (Ceramic)
40
40
71 85
Operating Temperature (°C)
EXTERNAL CAPACITOR TABLE
C1 (Ceramic)
60
0
3. No parallel connection or plug and play.
MODEL
80
ED
V7805-1000-SMT
Vin
date 09/16/2020 Ϳ page 4 of 6
GND
7RUHGXFHRXWSXWULSSOHLWLVUHFRPPHQGHGWRDGGD/&¿OWHUWRWKH
output port.
D
L: Recommended parameter 10 ~ Nj+
cui.com
120
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CUI Inc Ϳ SERIES: V78-1000-SMT Ϳ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 09/16/2020 Ϳ page 5 of 6
ADJUSTMENT RESISTOR VALUES
V7801A-1000
V7802-1000
V7803-1000
5N
5N
5N
5N
1.5
188.1
-
15.4
-
1.8
-
-
68.6
-
V7805-1000
5N
5N
5N
5N
-
-
-
-
15.4
-
-
-
U
ED
MODEL
Vadj (V)
2.5
-
81.4
-
-
87
-
9.7
-
3.0
-
32.2
-
88.7
339
-
30.5
-
3.3
-
18.6
-
41.3
-
-
48.8
-
3.6
-
9.5
-
20.1
3.9
-
-
-
8.0
4.5
-
-
-
-
4.9
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
6.5
-
-
-
75
-
115
-
-
16.6
338
-
-
8.0
1,835
-
-
6.5
-
-
-
5.2
-
426
-
-
1.1
-
58.7
-
-
-
-
16.9
-
-
-
-
3.2
TI
5.5
6.0
121
51.0
N
5.0
5.1
-
-
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.
FUSE
LDM1
LDM2
CO
V in
N
EMC RECOMMENDED CIRCUIT
MOV
D
IS
GND
TVS
C0
a
EUT
+Vout
+Vin
GND
C1
b
Figure 1
Recommended External Circuit Components
FUSE
choose according to practical
input current
MOV
10D560
LDM1
Nj+
TVS
SMCJ36A
C0
Nj)9
C1
Nj)9
LDM2
Nj+
Table 1
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Load
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CUI Inc Ϳ SERIES: V78-1000-SMT Ϳ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 09/16/2020 Ϳ page 6 of 6
REVISION HISTORY
rev.
description
date
11/23/2011
initial release
9,Q¿QLW\EUDQGLQJUHPRYHG
1.02
added TR package option
1.03
housing width changed, EMC recommendations updated
U
ED
1.0
1.01
09/04/2012
10/31/2012
01/26/2016
1.04
discontinued V7802-1000-SMT model
10/23/2018
1.05
discontinued V7801-1000-SMT, V7801A-1000-SMT models
06/24/2019
1.06
discontinued V7806-1000-SMT model
09/16/2020
D
IS
CO
N
TI
N
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
techsupport@cui.com
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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
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