LM2744EVAL National Semiconductor, LM2744EVAL Datasheet - Page 5

• Manufacturer Part Number: LM2744EVAL
• Description: BOARD EVALUATION LM2744
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM2744EVAL

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1.2V
• Current - Output: 3.5A
• Voltage - Input: 1.8 ~ 5.5V
• Regulator Topology: Buck
• Frequency - Switching: 1MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM2744
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -

Designator
Bill of Materials
Q1-Q2
C10
C11
C12
C14
C16
C21
C22
R10
R11
U1
U2
C5
C7
C8
C9
R1
R2
R3
R4
R5
R6
R7
R8
D2
L1
Reference Output Cap
Frequency Adjust Res
Top and Bottom FETs
Output Filter Inductor
Reference Input Cap
Shut Down Pull-Up
Res Divider, upper
Res Divider, lower
Low Dropout Reg
Current Limit Res
Output Filter Cap
VCC Decoupling
Bootstrap Diode
Input Filter Cap
Input Filter Cap
VCC Filter Res
PWGD Pull-Up
Soft Start Cap
Comp Cap
Comp Cap
Comp Cap
Comp Res
Comp Res
Zero Ohm
Controller
Function
Cboot
FIGURE 9. Complete Demo Board Schematic
Dual N-MOSFET, V
470uF, 6.3V, 10m ohm ESR POScap
Inductor 1µH, 5.3Arms, 10.2mΩ
Cer Cap 0.47µF 25V 10% 1206
Cer Cap 1.2nF 25V 10% 0805
Cer Cap 0.1µF 25V 10% 0805
Cer Cap 1.8nF 25V 10% 0805
Cer Cap 12nF 25V 10% 0805
Cer Cap 15pF 50V 10% 0805
Cer Cap 10uF 25V 10% 1210
Cer Cap 10uF 25V 10% 1210
Niobium Oxide Cap 4.7µF 6V
Cer Cap 1µF 25V 10% 0805
IC LM4140BCM-1.0 SO-8
Schottky Diode, SOD-123
Res 24.9KΩ .25W 0805
Res 3.16KΩ .25W 0805
Res 2.94KΩ .25W 0805
Res 10.0KΩ .25W 0805
Res 100KΩ .25W 0805
Res 100KΩ .25W 0805
Res 21KΩ .25W 0805
Res 59KΩ .25W 0805
IC LM2744 TSSOP14
Res 10Ω .25W 0805
Part Description
Res 0Ω 0805
DS
5
= 20V, 24mΩ
@
2.5V
Murata GRM216R61E105KA12B
Vishay CRCW08051000F
Vishay CRCW08052492F
Vishay CRCW08052102F
Vishay CRCW08053161F
Vishay CRCW08052941F
Vishay CRCW08051002F
Vishay CRCW08055902F
Vishay CRCW08051003F
Vishay CRCW12061003F
Vishay VJ0805Y123KXX
Vishay VJ0805Y122KXX
Vishay VJ0805A150KAA
Vishay VJ0805Y104KXX
Vishay VJ0805Y182KXX
Vishay VJ1206Y474KXX
Vishay CRCW08050000
National Semiconductor
National Semiconductor
AVX NOJA475M0006R
AVX 12103D106MAT
AVX 12103D106MAT
Cooper DR73-1R0
Vishay 9926BDY
Sanyo 6TPD470
Part Number
MBR0530LTI
20134312
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