LM20343MH/NOPB National Semiconductor, LM20343MH/NOPB Datasheet - Page 18

• Manufacturer Part Number: LM20343MH/NOPB
• Description: IC REG SYNC BUCK 3A 20TSSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: Step-Down (Buck)r

Specifications of LM20343MH/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 32 V
• Current - Output: 3A
• Frequency - Switching: 250kHz, 750kHz
• Voltage - Input: 4.5 ~ 36 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP Exposed Pad, 20-eTSSOP, 20-HTSSOP
• Primary Input Voltage: 36V
• No. Of Outputs: 1
• Output Voltage: 32V
• Output Current: 3A
• No. Of Pins: 20
• Operating Temperature Range: -40°C To +125°C
• Msl: MSL 1 - Unlimited
• Filter Terminals: SMD
• Rohs Compliant: Yes
• For Use With: LM20343EVAL - EVALUATION BOARD FOR THE LM20343
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: *LM20343MH; *LM20343MH/NOPB; LM20343MH

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Bill of Materials (V
C2, C3
C5, C6
R1, R5
U1
C1
C4
C7
C8
C9
D1
R2
R3
R4
L1
ID
Qty
1
1
2
1
1
1
1
1
1
1
2
1
1
1
GRM21BR61E475KA12L
C3225X5R1E226M
C1608X7R1H104K
C1608X5R1A105K
C1608C0G1H100J
C1608C0G1H102J
MSS1048-472NLB
CMMSH1-40-NST
CRCW06031002F
CRCW06034992F
CRCW06034992F
CRCW06033092F
IN
6TPB150MAZB
Part Number
LM20343MH
= 12V, V
FIGURE 14. Typical Application Schematic
OUT
= 3.3V, I
eTSSOP-20
MSS1048
SOD123
1210
0805
0603
0603
0603
0603
0603
0603
0603
0603
Size
18
B
OUT
= 3A, f
Vr = 40V, Io = 1A, Vf = 0.55V
150µF,POSCAP, 6.3V, 20%
4.7µH, 0.012 Ohms, 6.4A
IC, Switching Regulator
100nF, X7R, 50V, 10%
4.7µF, X5R, 25V, 10%
22µF, X5R, 25V, 20%
10pF, C0G, 50V, 5%
1µF, X7R, 10V, 10%
1nF, C0G, 50V, 5%
Description
49.9kΩ, 1%
49.9kΩ, 1%
30.9kΩ, 1%
SW
10kΩ, 1%
= 750 kHz)
Semiconductor
Coilcraft
Vendor
MuRata
Central
Vishay
Vishay
Vishay
Vishay
Sanyo
30051744
NSC
TDK
TDK
TDK
TDK
TDK