Datasheet

cui.com
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
1
DC/DC
Converter
C1
22 F
2(3)
C2
Load
L
Note: See External Capacitor Table on page 5 for C1 & C2 values.
For more information, please visit the product page.