SNVU697 September   2020 LMQ62440-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 LMQ62440-Q1 Synchronous Step-Down Voltage Converter
  3. 2Quick Start
  4. 3Detailed Descriptions
  5. 4EVM Performance
    1. 4.1 Board Efficiency, Load Regulation, Transient, and Steady-state Curves
    2. 4.2 EMI Test Results
    3. 4.3 Thermal Picture
  6. 5EVM Schematic Entry
  7. 6Bill of Materials
  8. 7Board Layout

6 Bill of Materials

Table 6-1 LMQ62440EVM-2MHz Bill of Materials
DESIGNATOR QUANTITY VALUE DESCRIPTION PACKAGE REFERENCE PART NUMBER MANUFACTURER
C1, C4 2 4.7 µF CAP, CERM, 4.7 µF, 50 V, ±20%, X7R, AEC-Q200 Grade 1, 1210 1210 UMK325B7475MMHT Taiyo Yuden
C2, C3 2 0.022 µF CAP, CERM, 0.022 µF, 50 V, ±10%, X7R, 0402 0402 GRM155R71H223KA12D MuRata
C5 1 1 µF CAP, CERM, 1 µF, 25 V, ±10%, X7R, 0805 0805 C0805C105K3RACTU Kemet
C6, C7 2 22 µF CAP, CERM, 22 µF, 16 V, ±20%, X7R, AEC-Q200 Grade 1, 1210 1210 CGA6P1X7R1C226M250AC TDK
C12 1 0.1 µF CAP, CERM, 0.1 µF, 10 V, ±10%, X7R, 0603 0603 C0603X104K8RACTU Kemet
C14 1 CAP CER 0603 1UF 10V X7R 10% 0603 (1608 Metric) C0603C105K8RACAUTO KEMET
C15 1 C0603 22 pF X7R 30ppm/°C 10.00% 50 V 0603 C0603C220K5RACAUTO KEMET
C16, C17, C18, C19 4 2.2 µF CAP, CERM, 2.2 µF, 50 V, ±10%, X7R, AEC-Q200 Grade 1, 0805 0805 CGA4J3X7R1H225K125AB TDK
C20, C21 2 0.47 µF CAP, CERM, 0.47 µF, 50 V, ±10%, X7R, AEC-Q200 Grade 1, 0603 0603 CGA3E3X7R1H474K080AE TDK
J1, J2, J5 3 Terminal Block, 5 mm, 2x1, Tin, TH Terminal Block, 5 mm, 2x1, TH 691 101 710 002 Wurth Elektronik
J3 1 Header, 100 mil, 3x1, Gold, TH Header, 100 mil, 3x1, TH HTSW-103-07-G-S Samtec
J4 1 Header, 2 mm, 4x2, Tin, TH Header, 2 mm, 4x2, TH TMM-104-03-T-D Samtec
L1 1 1.5 µH Inductor, Shielded, Metal Composite, 1.5 µH, 5.8 A, 0.019 Ω, SMD 4.1x4.1 mm 74438356015 Wurth Elektronik
L2 1 1 µH Inductor, Shielded, 1 µH, 7.2 A, 0.012 Ω, SMD 4.1x4.1 mm 74438356010 Wurth Elektronik
R1, R5 2 1.00 k RES, 1.00 k, 1%, 0.25 W, 1206 1206 RC1206FR-071KL Yageo America
R2, R12 2 0 RES, 0, 5%, 0.1 W, 0603 0603 RC0603JR-070RL Yageo
R3, R6, R13 3 100 k RES, 100 k, 1%, 0.1 W, 0603 0603 RC0603FR-07100KL Yageo
R4 1 100 RES, 100, 1%, 0.1 W, 0603 0603 RC0603FR-07100RL Yageo
R7 1 24.9 k RES, 24.9 k, 1%, 0.1 W, 0603 0603 RC0603FR-0724K9L Yageo
R8 1 1.00 k RES, 1.00 k, 1%, 0.1 W, 0603 0603 ERJ-3EKF1001V Panasonic
R9 1 1.00 k RES, 1.00 k, 1%, 0.1 W, 0603 0603 RC0603FR-071KL Yageo
R11 1 255 k RES, 255 k, 1%, 0.1 W, 0603 0603 RC0603FR-07255KL Yageo
SH-J1, SH-J2 2 Shunt, 100 mil, Gold plated, Black Shunt 2 pos. 100 mil 881545-2 TE Connectivity
TP1, TP8 2 Test Point, Multipurpose, Red, TH Red Multipurpose Testpoint 5010 Keystone
TP2, TP3, TP4, TP5 4 Test Point, Multipurpose, Black, TH Black Multipurpose Testpoint 5011 Keystone
TP6, TP9 2 Test Point, Multipurpose, Orange, TH Orange Multipurpose Testpoint 5013 Keystone
TP7, TP10 2 Test Point, Multipurpose, White, TH White Multipurpose Testpoint 5012 Keystone
U1 1 Automotive 4 A Low Noise Synchronous Buck Regulators, RJR0014A (VQFN-HR-14) RJR0014A

LMQ62440APPQRJRRQ1

 Texas Instruments
C8, C9, C10, C11 0 22 µF CAP, CERM, 22 µF, 16 V, ±20%, X7R, AEC-Q200 Grade 1, 1210 1210 CGA6P1X7R1C226M250AC TDK
C13 0 CAP CER 0603 1UF 10V X7R 10% 0603 (1608 Metric) C0603C105K8RACAUTO KEMET
C22 0 1000 pF CAP, CERM, 1000 pF, 50 V, ±10%, X7R, 0603 0603 C0603C102K5RACTU Kemet
C23 0 1 µF CAP, CERM, 1 µF, 50 V, ±10%, X7R, 0603 0603 UMK107AB7105KA-T Taiyo Yuden
R10 0 0.51 RES, 0.51, 1%, 0.25 W, 0805 0805 CRM0805-FX-R510ELF Bourns
R14 0 100 k RES, 100 k, 1%, 0.1 W, 0603 0603 RC0603FR-07100KL Yageo