Datasheet

FB
PGOOD
V
IN
LM21215A-1
V
OUT
AGND
COMP
PVIN
SYNC
SW
EN
C
IN3
L
O
R
C1
C
C1
C
C2
C
C3
R
FB1
R
FB2
R
C2
PGND
AVIN
C
F
1
11-16
3
4
17
19
18
20
8,9,10
5,6,7
R
F
SS /
TRK
C
SS
2
eTSSOP-20
C
IN2
C
IN1
V
IN
R
PGOOD
C
O1
C
O2
C
O3
OPEN
LM21215A
www.ti.com SNOSB87B –MARCH 2011–REVISED MARCH 2013
Figure 40. Typical Application Schematic 1
Table 1. Bill of Materials (V
IN
= 3.3V - 5.5V, V
OUT
= 1.2V, I
OUT
= 15A, f
SW
= 500kHz)
ID DESCRIPTION VENDOR PART NUMBER QUANTITY
C
F
CAP, CERM, 1 uF, 10V, +/-10%, MuRata GRM188R71A105KA61D 1
X7R, 0603
C
IN1
, C
IN2
, C
IN3
, CAP, CERM, 100 uF, 6.3V, +/-20%, MuRata GRM31CR60J107ME39L 6
C
O1
, C
O2
, C
O3
X5R, 1206
C
C1
CAP, CERM, 1800 pF, 50V, +/-5%, TDK C1608C0G1H182J 1
C0G/NP0, 0603
C
C2
CAP, CERM, 68 pF, 50V, +/-5%, TDK C1608C0G1H680J 1
C0G/NP0, 0603
C
C3
CAP, CERM, 820 pF, 50V, +/-5%, TDK C1608C0G1H821J 1
C0G/NP0, 0603
C
SS
CAP, CERM, 0.033 uF, 16V, +/- MuRata GRM188R71C333KA01D 1
10%, X7R, 0603
L
O
Inductor, Shielded Drum Core, Vishay-Dale IHLP4040DZERR56M01 1
Powdered Iron, 560nH, 27.5A,
0.0018 ohm, SMD
R
F
RES, 1.0 ohm, 5%, 0.1W, 0603 Vishay-Dale CRCW06031R00JNEA 1
R
C1
RES, 9.31 kohm, 1%, 0.1W, 0603 Vishay-Dale CRCW06039K31FKEA 1
R
C2
RES, 165 ohm, 1%, 0.1W, 0603 Vishay-Dale CRCW0603165RFKEA 1
R
FB1
, R
FB2
, R
PGOOD
RES, 10 kohm, 1%, 0.1W, 0603 Vishay-Dale CRCW060310K0FKEA 3
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