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date
05/26/2022
page
1 of 5
SERIES: P78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
FEATURES
•
•
•
•
•
•
0.5 A output current
up to 10:1 input range (9~90 Vdc)
straight and bent pin options
certified to EN/IEC 62368
no-load input current as low as 1.5 mA
-40°C to +85°C temperature range
RoHS
MODEL
input
voltage1
output
voltage
output
current
output
power
ripple
and noise2
efficiency
typ
(Vdc)
range
(Vdc)
(Vdc)
max
(mA)
max
(W)
max
(mVp-p)
Vin min
(%)
Vin max
(%)
P7803-500
48
9 ~ 90
3.3
500
1.65
80
82
69
P7805-500
48
9 ~ 90
5.0
500
2.50
80
87
75
P7806-500
48
9 ~ 90
6.5
500
3.25
80
91
78
P7809-500
48
14 ~ 90
9.0
500
4.50
80
91
80
P7812-500
48
18 ~ 90
12.0
500
6.0
80
91
83
P7815-500
48
20 ~ 90
15.0
500
7.50
80
93
84
P7824-500
48
36 ~ 90
24.0
300
7.2
80
93
85
Notes:
1. For input voltage exceeding 80 Vdc, an input capacitor of 22µF/100V is required.
2. The ripple and noise are measured at 20 MHz BW using the parallel cable method at nominal input voltage, full load. See Application notes.
PART NUMBER KEY
P78 XX - 500 X
Base Number
Output Voltage
cui.com
Output Current
Mounting Style:
"blank" = straight pin
R = bent pin
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CUI Inc │ SERIES: P78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 05/26/2022 │ page 2 of 5
INPUT
parameter
conditions/description
no load input current
at nominal input
reverse polarity at input
avoid / not protected
input filter
capacitance filter
min
typ
max
units
1.5
mA
OUTPUT
parameter
conditions/description
typ
max
units
line regulation
Vin = min ~ max, at full load
3.3, 5, 6.5 Vdc output models
9, 12, 15 Vdc output models
24 Vdc output model
±0.6
±0.6
±1.2
±1.5
±2.0
±2.5
%
%
%
load regulation
at nominal input, 10% ~ 100% load
±1.0
±2.0
%
voltage accuracy
at nominal input, 10% ~ 100% load
3.3 Vdc output model
all other output models
±3.5
±2.0
±4.5
±3.0
%
%
switching frequency3
at nominal input, full load
330
temperature coefficient
-40°C ~ 80°C
±0.03
%/°C
transient response deviation
at nominal input, 25% load step change
±0.4
±1.5
%
transient recovery time
at nominal input, 25% load step change
0.2
1
ms
min
typ
max
units
min
typ
max
units
Note:
min
kHz
3. Different output voltage with different switching frequency.
PROTECTIONS
parameter
conditions/description
short circuit protection
continuous, auto recovery
SAFETY AND COMPLIANCE
parameter
conditions/description
safety approvals
certified to 62368: EN, IEC
conducted emissions
CISPR32/EN55032 Class B (see Figure 2-2)
radiated emissions
CISPR32/EN55032 Class B (see Figure 2.2)
ESD
IEC/EN 61000-4-2 Contact±4kV, perf. Criteria B
radiated immunity
IEC/EN 61000-4-3 10V/m, perf. Criteria B
EFT/burst
IEC/EN 61000-4-4 100kHz±1kV, perf. Criteria B (see Figure 2-1)
surge
IEC/EN 61000-4-5 line to line±1kV, perf. Criteria B (see Figure 2-1)
conducted immunity
IEC/EN 61000-4-6 3Vr.m.s, perf. Criteria B
MTBF
as per MIL-HDBK-217 at 25°C
RoHS compliant
yes
2,000,000
hours
ENVIRONMENTAL
parameter
conditions/description
min
operating temperature
storage temperature
storage humidity
non-condensing
pin soldering resistance
temperature
1.5 mm from case for 10 seconds
cui.com
typ
max
units
-40
85
°C
-55
125
°C
5
95
%
300
°C
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CUI Inc │ SERIES: P78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 05/26/2022 │ page 3 of 5
DERATING CURVES
MECHANICAL
parameter
conditions/description
dimensions
straight pin models: 17.50 x 11.50 x 9.00 [0.689 x 0.453 x 0.354 inch]
bent pin models: 19.00 x 11.50 x 9.00 [0.748 x 0.453 x 0.354 inch]
min
case material
black plastic, flame retardant and heat resistant (UL94-V0)
weight
cooling
typ
max
units
mm
mm
3.8
g
natural convection
MECHANICAL DRAWING
units: mm [inches]
tolerance: ±0.50 [±0.020]
pin section tolerance: ±0.10 mm [±0.004]
Straight pin
Bent pin
PIN CONNECTIONS
cui.com
PIN
FUNCTION
1
+Vin
2
GND
3
+Vo
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CUI Inc │ SERIES: P78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 05/26/2022 │ page 4 of 5
TYPICAL APPLICATION CIRCUIT
Figure 1
Table 1
Output Voltage (Vdc)
C1 (ceramic capacitor)
3.3, 5, 6.5
9
12, 15
C2 (ceramic capacitor)
22µF/10V
10µF/100V
24
22µF/16V
22µF/25V
10µF/50V
1. The required C1 and C2 capacitors must be connected as close as possible to the module.
2. Refer to Table 1 for C1 and C2 capacitor values. For certain applications, increased values and/or tantalum or low ESR electrolytic
capacitors may also be used instead.
3. Converter cannot be used for hot swap and with output in parallel.
EMC RECOMMENDED CIRCUIT
Figure 2
Table 2
cui.com
Component
Recommended
value
MOV
S20K30
C1
680µF/100V
C2
4.7µF/100V
LDM2
120µH
C3
4.7µF/100V
C4
10µF/50V
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CUI Inc │ SERIES: P78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 05/26/2022 │ page 5 of 5
REVISION HISTORY
rev.
1.0
description
date
initial release
05/26/2022
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
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
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
affect its safety or effectiveness.
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