Datasheet
Table Of Contents
- Features
- Applications
- Description
- Absolute Maximum Ratings
- Operating Ratings
- Electrical Characteristics
- Typical Performance Characteristics
- Simplified Block Diagram
- Applications Information
- THEORY OF OPERATION
- SOFT-START
- OUTPUT OVERVOLTAGE PROTECTION
- UNDERVOLTAGE LOCKOUT
- CURRENT LIMIT
- THERMAL SHUTDOWN
- Design Guide
- Calculating Efficiency, and Junction Temperature
- Thermal Definitions
- WSON Package
- LM2832X Design Example 1
- LM2832X Design Example 2
- LM2832X Design Example 3
- LM2832Y Design Example 4
- LM2832Y Design Example 5
- LM2832Z Design Example 6
- LM2832Z Design Example 7
- LM2832X Dual Converters with Delayed Enabled Design Example 8
- LM2832X Buck Converter & Voltage Double Circuit with LDO Follower Design Example 9
- Revision History
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 2006–REVISED 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 45.3kΩ, 1% Vishay CRCW08054532F
R1 10.0kΩ, 1% Vishay CRCW08051002F
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