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date 02/19/2015
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SERIES: P7805-S DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
date 02/19/2015
page 1 of 6
FEATURES
• up to 500 mA current output
• operating temperature range (-40~85°C)
• pin comparable to LM78 linear regulators
• wider input range
• suited for negative output applications
• low ripple and noise
• efficiency up to 96%
PART NUMBER KEY
MODEL input
voltage
output
voltage
output
current
output
power
ripple
and noise1
efciency
typ
(Vdc)
range
(Vdc) (Vdc)
max
(mA)
max
(W)
max
(mVp-p)
typ
(%)
P7805-Q12-S1R5-S 12
12
4.75~28
4.75~25
1.5
-1.5
500
-400
0.75
0.6
30
35
77
66
P7805-Q12-S1R8-S 12
12
4.75~28
4.75~25
1.8
-1.8
500
-400
0.90
0.72
30
35
81
70
P7805-Q12-S2-S 12
12
4.75~28
4.75~25
2.5
-2.5
500
-400
1.25
1.0
30
35
87
73
P7805-Q24-S3-S 24
12
4.75~28
4.75~25
3.3
-3.3
500
-400
1.65
1.32
30
35
91
78
P7805-Q24-S5-S 24
12
6.5~32
6.5~27
5.0
-5.0
500
-400
2.5
2
30
35
94
83
P7805-Q24-S6-S 24
12
8~32
6.5~25
6.5
-6.5
500
-300
3.25
1.95
30
35
94
84
P7805-Q24-S9-S 24
12
11~32
7.0~23
9.0
-9.0
500
-200
4.5
1.8
30
35
95
86
P7805-Q24-S12-S 24
12
15~32
7.0~20
12
-12
500
-200
6.0
2.4
30
35
95
87
P7805-Q24-S15-S 24
12
18~32
7~17
15
-15
500
-200
7.5
3.0
30
35
96
87
Notes: 1. ripple and noise are measured at 20 MHz BW
P7805 - QXX - SXX - S
Input Voltage
Base Number Output Voltage Packaging Style
SIP
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CUI Inc SERIES: P7805-S DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 02/19/2015 page 2 of 6
INPUT
parameter conditions/description min typ max units
operating input voltage
-1.5, -1.8, -2.5, -3.3 V output
1.5, 1.8, 2.5, V output
3.3 V output
-5.0 V output
5.0 V output
-6.5 V output
6.5 V output
-9.0 V output
9.0 V output
-12 V output
12 V output
-15 V output
15 V output
4.75
4.75
4.75
6.5
6.5
6.5
8
7
11
7
15
7
18
12
12
24
12
24
12
24
12
24
12
24
12
24
25
28
28
27
32
25
32
23
32
20
32
17
32
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
no-load input power input voltage range 0.12 0.256 W
reverse polarity input forbidden
lter capacitance lter (1 μF)
OUTPUT
parameter conditions/description min typ max units
capacitive load for positive output applications
for negative output applications
1,000
470
μF
μF
line regulation input voltage range ±0.2 ±0.4 %
load regulation from 10% to 100% load ±0.4 ±0.6 %
voltage accuracy 100% load, input voltage range ±2 ±3 %
switching frequency 100% load, input voltage range 280 330 450 kHz
temperature coefcient -40°C ~ 85°C ±0.02 %/°C
PROTECTIONS
parameter conditions/description min typ max units
short circuit protection continuous, automatic recovery
short circuit input power input voltage range 0.5 1.8 W
over temperature protection internal IC junction 150 °C
SAFETY AND COMPLIANCE
parameter conditions/description min typ max units
conducted emissions CISPR22/EN55022 class B (external circuit required, see gure 1-b)
radiated emissions CISPR22/EN55022 class B (external circuit required, see gure 1-b)
ESD IEC/EN 61000-4-2 class B, contact ± 4kV
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 2,000,000 hours
RoHS 2011/65/EU
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CUI Inc SERIES: P7805-S DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 02/19/2015 page 3 of 6
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Front View
Bottom View
Top View
PCB Layout
Grid Size:
2.54mm x 2.54mm
MECHANICAL
parameter conditions/description min typ max units
dimensions 11.60 x 7.50 x 10.20 (0.457 x 0.295 x 0.402 inch) mm
case material plastic (UL94-V0)
weight 2.0 g
MECHANICAL DRAWING
units: mm [inches]
tolerance: ±0.25 [±0.010]
pin section tolerance: ±0.10 mm [±0.004]
10 Sec. Max.
Wave Soldering Time
4 Sec. Max.
Peak Temp. 260°C Max.
Time (sec.)
Temperature (°C)
250
200
150
100
50
0
SOLDERABILITY
parameter conditions/description min typ max units
hand soldering 1.5mm from case for 10 seconds 300 °C
wave soldering see wave soldering prole 260 °C
ENVIRONMENTAL
parameter conditions/description min typ max units
operating temperature see derating curve -40 85 °C
storage temperature -55 125 °C
case temperature operating temperature curve range 100 °C
storage humidity non-condensing 95 %
PIN CONNECTIONS
Pin Positive
Output
Negative
Output
1 +Vin +Vin
2 GND -Vout
3 +Vout GND
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CUI Inc SERIES: P7805-S DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 02/19/2015 page 4 of 6
DC/DC
Vin
LDM2
E
C0
LDM1
MOV
FUSE
D
C3
V
in
GN
D
+
+Vo
GND
LO
AD
C2C1
DERATING CURVES
100
80
60
40
20
Operating Temperature (°C)
Output Power (%)
-40-20 0204060 85 100
Safe operating area
71
Recommended external circuit components
FUSE choose according to practical input
current
MOV S10K35
LDM1 82μH
LDM2 12μH
C0 680μF/50V
C3 4.7μF/50V
Temperature Derating Curve
Figure 1
TEST CONFIGURATION
Note: To reduce ripple, it is recommended to add a LC lter in output port. (L: Recommended parameter 10μH ~ 47 μH)
EMC RECOMMENDED CIRCUIT
Effeciency and Output Voltage Ripple Test Start-up and Load Transient Response Test
Scope
Ceramic
3(2)
+V
in
GND
Vout
C2
C1
25.4mm
1
2.54mm
DC/DC
Converter
2(3)
25.4mm
12.7mm
1F 10 F
Tantalum
Copper strip
Copper strip
Load
3(2)
+Vin
GND
Vout
C2
C1
50.8 mm
1
2.54 mm
DC/DC
Converter
2
Scope
Copper strip
Load
Copper strip
(3)
OUTPUT RIPPLE REDUCTION
3(2)
+Vin
GN
D
Vout
1DC/DC
Converter
C1
22 F
2(3) C2
Load
L
Note: See External Capacitor Table on page 5 for C1 & C2 values.
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CUI Inc SERIES: P7805-S DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 02/19/2015 page 5 of 6
1
3
2
+V
in
GND
-Vou
t
C2
GND
1
2
3+Vout
C1
C3 C4
LDM
Part Number C1, C3
(ceramic capacitor)
C2, C4
(ceramic capacitor)
P7805-Q24-S1R5-S 10μF/50V 10μF/6.3V
P7805-Q24-S1R8-S 10μF/50V 10μF/6.3V
P7805-Q24-S2-S 10μF/50V 10μF/6.3V
P7805-Q24-S3-S 10μF/50V 10μF/6.3V
P7805-Q24-S5-S 10μF/50V 10μF/10V
P7805-Q24-S6-S 10μF/50V 10μF/16V
P7805-Q24-S9-S 10μF/50V 10μF/16V
P7805-Q24-S12-S 10μF/50V 10μF/25V
P7805-Q24-S15-S 10μF/50V 10μF/25V
External Capacitor Table
TYPICAL APPLICATION CIRCUIT
Positive Output Application Circuit Negative Output Application Circuit
Positive and Negative Output Paralleling Application Circuit
+V
in
GNDGND
1
2
3+V
out
C1 C2
+Vin
GNDGND
12
3
-Vout
C1 C2
Note: 1. When the products used as negative output and the input-voltage under (Vin-min+2V), C1 and C2 must be added in the circuit, and they should be placed as near as the
products' footprints. Others apply to the application-environment.
2. The capacitance of C1, C2, see external circuit table, can be increased if required, and tantalum or low ESR electrolytic capacitors may also sufce.
3. When the products used as the circuit like gure 4, an inductor named as LDM up to 10μH is recommended in the circuit to reduce the mutual interference.
4. For models ≤ 3.3 VOUT
, if the input voltage of the model's negative output is less than 4.85 V, a dummy load of not less than 5 mA needs to be added to the output.
5. Cannot use in parallel for output and hot swap for input.
Note: 1. Max. capacitive load tested at input voltage range and full load.
2. All specications measured at: Ta=25°C, humidity<75%, nominal input voltage and rated output load, unless otherwise specied.
Figure 2
Figure 4
Figure 3
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CUI Inc SERIES: P7805-S DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 02/19/2015 page 6 of 6
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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800.275.4899
Fax 503.612.2383
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techsupport@cui.com
rev. description date
1.0 initial release 03/20/2013
1.01 updated EMC circuit recommendations 02/19/2015
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
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Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
CUI Inc.:
P7805-Q24-S12-S P7805-Q24-S5-S P7805-Q24-S3-S P7805-Q24-S9-S P7805-Q12-S2-S P7805-Q24-S6-S
P7805-Q12-S1R8-S P7805-Q12-S1R5-S P7805-Q24-S15-S