LM2831XMF/NOPB National Semiconductor, LM2831XMF/NOPB Datasheet - Page 25

• Manufacturer Part Number: LM2831XMF/NOPB
• Description: IC REGULATOR BUCK 1.5A SOT23-5
• Manufacturer: National Semiconductor
• Type: Step-Down (Buck)r

Specifications of LM2831XMF/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 4.5 V
• Current - Output: 1.5A
• Frequency - Switching: 1.6MHz
• Voltage - Input: 3 ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• For Use With: LM2831XMF EVAL - EVAL BOARD FOR LM2831XMF
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: LM2831XMF; LM2831XMFTR

LM2831X Buck Converter & Voltage Double Circuit with LDO Follower
Design Example 9
D1, Catch Diode
C2, Output Cap
C1, Input Cap
C3 – C6
Part ID
U1
U2
D2
R2
R1
L2
L1
FIGURE 14. LM2831X (1.6MHz): Vin = 5V, Vo = 3.3V
0.4V
0.3V
1.5A Buck Regulator
f
f
Schottky 20V
2.2µF, 6.3V, X5R
22µF, 6.3V, X5R
22µF, 6.3V, X5R
Schottky 1.5A, 30V
10µH, 800mA
200mA LDO
3.3µH, 2.2A
45.3kΩ, 1%
10.0kΩ, 1%
Part Value
R
, 500mA
Bill of Materials
R
25
Manufacturer
TOSHIBA
ON Semi
@
CoilCraft
Vishay
Vishay
NSC
NSC
TDK
TDK
TDK
TDK
1.5A & LP2986-5.0
@
VLCF5020T-3R3N2R0-1
150mA
C3216X5ROJ226M
C3216X5ROJ226M
C1608X5R0J225M
CRCW08054532F
CRCW08051002F
Part Number
ME3220-103
LP2986-5.0
MBR0520
LM2831X
CRS08
20174863
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