Datasheet

LDO
C5
U2
D2
L2
R1
R2
EN
FB
SW
VINA
VIND
GND
V
O
= 3.3V @ 2.0A
V
O
= 5.0V @ 150mA
C4
C6
C2
C3
D1
L1
U1
C1
LM2832
V
IN
= 5V
LM2832
SNVS455A AUGUST 2006REVISED APRIL 2013
www.ti.com
LM2832X Buck Converter & Voltage Double Circuit with LDO Follower Design Example 9
Figure 36. LM2832X (1.6MHz): Vin = 5V, Vo = 3.3V @ 2.0A & LP2986-5.0 @ 150mA
Table 10. Bill of Materials
Part ID Part Value Manufacturer Part Number
U1 2.0A Buck Regulator TI LM2832X
U2 200mA LDO TI LP2986-5.0
C1, Input Cap 22µF, 6.3V, X5R TDK C3216X5ROJ226M
C2, Output Cap 2x22µF, 6.3V, X5R TDK C3216X5ROJ226M
C3 – C6 2.2µF, 6.3V, X5R TDK C1608X5R0J225M
D1, Catch Diode 0.4V
f
Schottky 2A, 20V
R
Diodes Inc. B220/A
D2 0.4V
f
Schottky 20V
R
, 500mA ON Semi MBR0520
L2 10µH, 800mA CoilCraft ME3220-103
L1 2.2µH, 3.5A CoilCraft DS3316P-222
R2 45.3k, 1% Vishay CRCW08054532F
R1 10.0k, 1% Vishay CRCW08051002F
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