Datenblatt

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date
03/21/2014
page
1 of 6
SERIES: V78-2000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
FEATURES
•
•
•
•
•
•
•
•
2 A current output
extremely high efficiency up to 92%
no heat sink required
pin compatible to LM78XX linear regulators
available in straight and right angle SIP packages
low ripple and noise
short circuit protection, thermal shutdown
wide temperature (-40~85°C)
input
voltage
MODEL
output
voltage
output
current
output
power
ripple
and noise1
efficiency
typ
(Vdc)
range
(Vdc)
(Vdc)
max
(mA)
max
(W)
max
(mVp-p)
Vin min
(%)
Vin max
(%)
V7802-2000*
12
4.75~18
2.5
2,000
5
45
85
83
V7803-2000
12
4.75~18
3.3
2,000
6.6
45
87
86
V7805-2000
12
6.5~18
5
2,000
10
45
91
88
V7806-2000
12
8~18
6.5
2,000
13
45
92
91
Notes:
1. ripple and noise are measured at 20 MHz BW
*. Discontinued
PART NUMBER KEY
V78 XX - 2000 X
Base Number
Output Voltage
Output Current
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"blank" = straight pins
R = 90° pins
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CUI Inc │ SERIES: V78-2000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 03/21/2014 │ page 2 of 6
INPUT
parameter
conditions/description
min
typ
max
units
operating input voltage
2.5 and 3.3 V outputs
5 V output
6.5 V output
4.75
7
8.5
12
12
12
18
18
18
Vdc
Vdc
Vdc
parameter
conditions/description
min
typ
max
units
line regulation
Vin = min ~ max, at full load
±0.5
±0.75
%
load regulation
measured from 10% load to full load
±0.5
±1.0
%
OUTPUT
voltage accuracy
100% load
switching frequency
100% load, input voltage range
300
temperature coefficient
±2
±3
%
340
380
kHz
±0.03
%/°C
PROTECTIONS
parameter
conditions/description
min
short circuit protection
continuous, automatic recovery
thermal shutdown
internal IC junction
typ
max
150
units
°C
SAFETY AND COMPLIANCE
parameter
conditions/description
EMI/EMC
EN 55022 class B, EN 61000-4-2 level 3 6kV / 8kV perf. criteria B
min
MTBF
RoHS
typ
max
2,000,000
units
hours
2011/65/EU
ENVIRONMENTAL
parameter
max
units
operating temperature
conditions/description
min
-40
typ
85
°C
storage temperature
-55
125
°C
100
°C
95
%
case temperature
storage humidity
non-condensing
temperature rise
at full load
lead temperature
1.5 mm from case for 10 seconds
25
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°C
300
°C
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CUI Inc │ SERIES: V78-2000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 03/21/2014 │ page 3 of 6
DERATING CURVES
1. output power vs. ambient temperature
Load (%)
100
80
60
40
20
-40
-20
0
20
40
60 71
85
100
120
Ambient Temperature (°C)
MECHANICAL
parameter
conditions/description
dimensions
0.689 x 0.354 x 0.453 (11.50 x 9.00 x 17.50 mm)
min
case material
plastic (UL94-V0)
typ
max
units
inch
weight
4.0
g
MECHANICAL DRAWING
units: mm [inches]
tolerance: ±0.25 [±0.010]
pin section tolerance: ±0.10 mm [±0.004]
V78XX-2000
V78XX-2000R
0.50 [0.020]
17.50 [0.689]
17.50 [0.689]
4.10 [0.161]
9.00 [0.354]
0.50 [0.020]
11.50[0.453]
9.00 [0.354]
11.50[0.453]
1.50
[0.059]
4.10[0.161]
2.15
[0.085]
5.08 [0.200]
5.08 [0.200]
1.00 [0.039]
(Bottom View)
1 2
3
0.30 [0.012]
0.50 [0.020]
1 2
3
2.54 [0.100]
2.15
[0.085]
2.15 [0.085]
(Bottom View)
1
2
5.08 [0.200]
5.08 [0.200]
1.35 [0.053]
1
3
2
3
2.54 [0.100]
1.00 [0.039]
PIN CONNECTIONS
PIN
FUNCTION
1
+Vin
2
GND
3
+Vo
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CUI Inc │ SERIES: V78-2000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 03/21/2014 │ page 4 of 6
EXTERNAL CAPACITOR TABLE
Part Number
C1 (Ceramic capacitor)
C2 (Ceramic capacitor)
V7802-2000
10μF/25V
22μF/6.3V
V7803-2000
10μF/25V
22μF/6.3V
V7805-2000
10μF/25V
22μF/16V
V7806-2000
10μF/25V
22μF/16V
TYPICAL APPLICATION CIRCUIT
APPLICATION EXAMPLE
Positive Output
1
+Vin
1
Vin
V78XX-2000
3
C3
+Vout
V78XX-2000
3
+Vout
C4
2
GND
C1
GND
C1
2
C2
1
GND
GND
V78XX-2000
3
2
C2
Negative Output
-Vout
GND
GND
C1
+Vin
Note:
1
V78XX-2000
2
3
1. C1 and C2 are required and should be fitted close to the converter
pins.
2. The capacitance of C1and C2 sees external capacitor table, it can
be increased properly if required, and tantalum or low ESR
electrolytic capacitors may also suffice.
3. No parallel connection or plug and play.
C2
-Vout
INPUT FILTER CIRCUIT
1 0 u H-4 7 u H
Vin
Vin
Vo
Vout
GND
10uF
10uF
GND
GND
OUTPUT FILTER CIRCUIT
1 0 u H -4 7 u H
Vin
Vin
Vo
GND
10uF
10uF
GND
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22uF
RL
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CUI Inc │ SERIES: V78-2000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 03/21/2014 │ page 5 of 6
EMC RECOMMENDED CIRCUIT
1 mH
Vin
Vin
Vout
Vo
GND
2.2 uF
330 uF
1u F
GND
GND
1mH
TEST CONFIGURATION
Efficiency and Output Voltage Ripple Test
25. 4mm
25.4mm
12.7mm
3
1 F
2
C1
+Vout
Copper strip
C2
10 F
Ceramic Tantalum
Scope
Load
D C /D C
C onv erter
1
2.54 mm
Vin
GND
Copper stri p
Start-up and Load Transient Response Test
50 .8 mm
DC /DC
Conv erter
2
C1
+Vo ut
Copper strip
3
Scope
C2
Load
1
2.54 mm
Vi n
GND
Copper strip
EFFICIENCY AND RIPPLE CURVES
Efficiency
Ripple
Ripple VS. Load(Vin=nominal)
100
95
90
85
80
75
70
37
32
V7802-2000
R ip p le ( m V )
E f fic ie n c y (% )
Efficiency VS. Input voltage (full load)
V7803-2000
V7805-2000
V7806-2000
65
60
27
V7802-2000
22
17
V7803-2000
V7805-2000
V7806-2000
12
7
2
4.75 5
6
6.5 7.2
8
9
10
12
15
18
20
200 400 600 800 1000 1200 1400 1600 1800 2000
Load(mA)
Input voltage(V)
Ripple VS. Input voltage(full load)
Efficiency VS. Load(Vin=nominal)
34
30
100
R ip p le ( m V )
E fficiency(% )
90
V7802-2000
V7803-2000
V7805-2000
V7806-2000
80
70
60
50
26
22
V7802-2000
V7803-2000
V7805-2000
V7806-2000
18
14
10
6
2
4.75 5
200 400 600 800 1000 1200 1400 1600 1800 2000
6
6.5 7.2
8
9
10 12 15 18 20
Input Voltage(V)
Load(mA)
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CUI Inc │ SERIES: V78-2000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 03/21/2014 │ page 6 of 6
REVISION HISTORY
rev.
description
date
1.0
initial release
06/17/2010
1.01
V-Infinity branding removed
09/06/2012
1.02
updated typical application circuits
09/25/2012
discontinued model V7802-2000
03/21/2014
1.03
The revision history provided is for informational purposes only and is believed to be accurate.
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20050 SW 112th Ave.
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800.275.4899
Fax 503.612.2383
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[email protected]
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