Datasheet

Circuit Example: Complies with EN55022 Class B Radiated Emissions www.ti.com
Table 3. Bill of Materials
Designator Description Case Size Manufacturer Manufacturer P/N Quantity
U1 SIMPLE SWITCHER TO-PMOD-7 Texas Instruments LMZ10503/4/05TZ-ADJ 1
C
in1
1 µF, X7R, 16V 0805 TDK C2012X7R1C105K 1
C
in2
4.7 µF, X5R, 6.3V 0805 TDK C2012X5R0J475K 1
C
in3
47 µF, X5R, 6.3V 1210 TDK C3225X5R0J476M 1
C
O1
100 µF, X5R, 6.3V 1812 TDK C4532X5R0J107M 1
R
fbt
75 kΩ 0805 Vishay Dale CRCW080575K0FKEA 1
R
fbb
34.8 kΩ 0805 Vishay Dale CRCW080534K8FKEA 1
R
comp
1.1 kΩ 0805 Vishay Dale CRCW08051K10FKEA 1
C
comp
180 pF, ±5%, C0G, 50V 0603 TDK C1608C0G1H181J 1
C
SS
10 nF, ±5%, C0G, 50V 0805 TDK C2012C0G1H103J 1
Figure 20. Radiated Emissions (EN55022, Class B)
V
IN
= 5V, V
OUT
= 2.5V, I
OUT
= 3A
Tested on LMZ10503 Evaluation Board
Figure 21. Radiated Emissions (EN55022, Class B)
V
IN
= 5V, V
OUT
= 2.5V, I
OUT
= 4A
Tested on LMZ10504 Evaluation Board
12
AN-2022 LMZ1050x Evaluation Board SNVA421D–January 2010–Revised April 2013
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