Datasheet

cui.com
CUI Inc │ SERIES: PEM1-S │ DESCRIPTION: DC-DC CONVERTER date 02/10/2016 │ page 5 of 7
EMC RECOMMENDED CIRCUIT
Recommended external circuit components
Vin
(Vdc)
C1 CY LDM
3.3 4.7μF/50V -- 6.8μH
5 4.7μF/50V -- 6.8μH
12 4.7μF/50V -- 6.8μH
15 4.7μF/50V 1nF/2KV 6.8μH
24 4.7μF/50V 1nF/2KV 6.8μH
Vin
GND
+Vo
-Vo
(0V)
DC/DC
LOAD
LDM
C1
Vin
GND
Cout
CY
TEST CONFIGURATION
DC
Cin
Lin
DC
Load
Oscilloscope
Current
Probe
DERATING CURVES
Note: Input reected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
External components
Lin 4.7μH
Cin
220μF, ESR < 1.0Ω
at 100 kHz
10 20 30 40 50 60 70 80 90 100
10
0
5
Typical Load Line
Rated Output Voltage
-2.5
2.5
-7.5
Output Current Percentage (%)
(Nominal Input Voltage)
Tolerance Envelope Curve (all other models)
Output Voltage Accuracy (%)
10 20 30 40 50 60 70 80 90 100
10
0
5
-5
Rated Output Voltage
1.0
-7.5
-15
Output Current Percentage (%)
(Nominal Input Voltage)
Tolerance Envelope Curve (3.3 Vdc)
Output Voltage Accuracy (%)
Typical Load Line
100
80
60
40
20
Ambient Temperature (°C)
Load (%)
-40-20 0204060
85 105 120
Temperature Derating Curve
Safe operating area
Figure 1
Figure 2
Table 1
Table 2
Note: 1. See Table 3 for Cout values.
Rated Output Voltage
Output Current Percentage (%)
(Nominal Input Voltage)
Tolerance Envelope Curve
(all other models)
Output Voltage Accuracy (%)
10 20 40 60 80 100
10
0
5
-5
Rated Output Voltage
1.0
-7.5
-15
Output Current Percentage (%)
(Nominal Input Voltage)
Tolerance Envelope Curve
(3.3 & 5 Vdc outputs only)
Output Voltage Accuracy (%)
Typical Load Line
-10
-15
10 20 40 60 80 100
15
5
10
-0
2.5
-2.5
Typical Load Line
-5
-10
-7.5
Max
Max
Min
Min
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