Datasheet

V
IN
= 8V ± 36V
V
OUT
= +3.3V
I
OUT
= 2A
C1
4.7 éF
C10
100 éF
C6
0.1 éF
R6
10.2k
R5
32.1k
J1
J2
ENABLE
GND
R1
10k
C8
2200 pF
R7
0
C2
4.7 éF
R4
0
C11
1 éF
J3
J4
PGOOD
J10
J9
C5
1 éF
D1
R8
49.9k
R3
12.1k
C9
0.1 éF
D2
C3
4.7 éF
C4
0.1éF
LM20242
FB
AGND
SW
GND
GND
GND
U1
14
11
12
2
10
9
SW
13
SW
8
SW
7
BOOT
17
VIN
16
VIN
15
VIN
6
VIN
5
EP
COMP
4
SS
1
RT
20
PGOOD
3
EN
19
VCC
18
C7
120 pF
R9
10.0k
R2
205k
L1
LM20242
SNVS534E –OCTOBER 2007–REVISED MARCH 2013 www.ti.com
Figure 17. Typical Application Schematic
Table 3. Bill of Materials
ID Qty Part Number Size Description Vendor
U1 1 LM20242MH HTSSOP IC, Switching Regulator NSC
L1 1 MSS1260-153MX MSS1260 15 µH, 4.6A ISAT Coilcraft
C1-3 3 GRM32ER71H475KA88L 1210 4.7 µF, 50V, X7R Murata
C4, 6, 9 3 VJ0805JY104KXX 0805 0.1 µF Vishay
C5, 11 2 VJ0805Y105JXACW1BC 0805 1 µF Vishay
C7 1 C1608COG1H121J 0603 120 pF TDK
C8 1 VJ0805Y222J 0805 2.2 nF Vishay
C10 1 C1210C107M9PAC 1210 100 µF Kemet
D1, D2 2 MBR0540 SOD123 0.5A, 40V, Schottky Fairchild
R1,9 2 CRCW06031002F 0603 10 kΩ Vishay
R2 1 CRCW08052053F 0805 205 kΩ Vishay
R3 1 CRCW08051212F 0805 12.1 kΩ Vishay
R4, 7 2 CRCW060330000ZOEA 0603 0 kΩ Vishay
R5 1 CRCW08053212F 0805 32.1 kΩ Vishay
R6 1 CRCW08051022F 0805 10.2 kΩ Vishay
R8 1 CRCW08054992F 0603 49.9 kΩ Vishay
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