SNVA213B May   2007  – February 2022 LM2745

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Specifics Of The Board
  4. 3 Feature Options
  5. 4 Specification Summary
  6. 5 Performance Characteristics – Efficiency
  7. 6 Switch Node Voltage and Output Voltage Ripple
  8. 7 Load Transient Response
  9. 8 Bill of Materials
  10. 9 PCB Layout
  11. 10Revision History

8 Bill of Materials

Table 8-1 Bill of Materials for LM2745 POL EVB (VIN: 8 V to 14 V, VOUT: 3.3 V, 19 A)
Location Part Number Type Size Parameters Qty Vendor
U1 LM2745 Syn. Buck Controller TSSOP-14 VIN: 4.5 V–5.5 V 1 NSC
U2 LM27937IMP-5.0 Linear Regulator 5 V,500 mA SOT-223 5 V, 500 mA 1 NSC
L1 SER2010-202ML Inductor 2 μH, 27 A, 0.852 mΩ 1 Coilcraft
Q1-2 IRF6633 N-MOSFET DirectFET-MP 20 V, 16 A, 4.1 mΩ, 11 nC 2 Vishay
Q3 IRF6609 N-MOSFET DirectFET-MT 20 V, 150 A, 2 mΩ, 46 nC 1 Vishay
D1 SL22-E3/2C Schottky Diode SMB 20 V, 2 A 1 Vishay
D2 MBRS0520 Schottky Diode SOD123 20 V, 0.5 A 1 Vishay
C1, 2 GRM32ER61C226KE20L Ceramic Capacitor 1210 22 µF, 25 V, X7R, 5% 2 Murata
C3, 11 GRM319R71H104KA01B Ceramic Capacitor 1206 100 nF, 25 V, X7R, 10% 2 Murata
C14 GRM319R71H474KA01B Ceramic Capacitor 1206 470 nF, 25 V, X7R, 10% 1 Murata
C9 GRM1885C1H1210JA01 Ceramic Capacitor 0603 120 pF, 50 V, C0G, 5% 1 Murata
C6 GRM188R71H222KA01 Ceramic Capacitor 0603 2.2 nF, 50 V, X7R, 10% 1 Murata
C7 GRM1885C1H101JA01 Ceramic Capacitor 0603 100 pF, 50 V, C0G, 5% 1 Murata
C8 GRM188R71H332KA01 Ceramic Capacitor 0603 3.3 nF, 50 V, X7R, 10% 1 Murata
C10 GRM188R71H153KA01 Ceramic Capacitor 0603 15 nF, 50 V, X7R, 10% 1 Murata
C12 GRM40X7R472K25 Ceramic Capacitor 0805 470 nF, 25 V, X7R, 10% 1 Murata
C13 12066D226MAT Ceramic Capacitor 1206 22 µF, 6.3 V, X5R, 20% 1 AVX
C4, 5 6SVPC220M OS-CON C6 220 µF, 6.3 V, 20% 2 Sanyo
R1,18 CRCW06030R00F Chip Resistor 0603 0 Ω 2 Vishay
R2 CRCW06032151F Chip Resistor 0603 2.15 k, 1% 1 Vishay
R3, R17 CRCW06031002F Chip Resistor 0603 10 k, 1% 2 Vishay
R4 CRCW06032211F Chip Resistor 0603 2.21 k, 1% 1 Vishay
R10, 11 CRCW06031003F Chip Resistor 0603 100 k, 1% 2 Vishay
R5, 6, 8 CRCW06032R21F Chip Resistor 0603 2.21 Ω, 1% 3 Vishay
R7, 9 CRCW06034702F Chip Resistor 0603 47 k, 1% 2 Vishay
R12 CRCW06038451F Chip Resistor 0603 8.45 k, 1% 1 Vishay
R15 CRCW06031821F Chip Resistor 0603 1.82 k, 1% 1 Vishay
R16 CRCW060310R0F Chip Resistor 0603 10 Ω, 1% 1 Vishay
— — F-Pin 8
— — Pin 90 deg., SIP, 6 way Pitch: 2.54 mm 1
GUID-639A32F3-4D98-4829-9E7D-7CFBDAFDF1B5-low.gif Figure 8-1 300 kHz Demo Board Schematic