Datasheet

GND
FB
EN
V
IN
SW
V
IN
= 5V
C1
R3
D1
L1
LM2831
R2
R1
C2
V
O
= 3.3V @ 1.5A
LM2831
www.ti.com SNVS422C –AUGUST 2006–REVISED APRIL 2013
LM2831Y Design Example 4
Figure 31. LM2831Y (550kHz): Vin = 5V, Vout = 3.3V @ 1.5A
Table 5. Bill of Materials
Part ID Part Value Manufacturer Part Number
U1 1.5A Buck Regulator TI LM2831Y
C1, Input Cap 22µF, 6.3V, X5R TDK C3216X5ROJ226M
C2, Output Cap 2x22µF, 6.3V, X5R TDK C3216X5ROJ226M
D1, Catch Diode 0.3V
f
Schottky 1.5A, 30V
R
TOSHIBA CRS08
L1 4.7µH 2.1A TDK SLF7045T-4R7M2R0-PF
R1 45.3kΩ, 1% Vishay CRCW080545K3FKEA
R2 10.0kΩ, 1% Vishay CRCW08051002F
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