SNVU927 October   2024

 

  1.   1
  2. 1Trademarks
  3. 2Introduction
  4. 3Setup
    1. 3.1 Input/Output Connector Description
    2. 3.2 Setup
    3. 3.3 Operation
  5. 4Board Layout
  6. 5Schematic

5 Schematic

LM3645EVM Schematic

LM3645
Table 5-1 Bill of Materials
Designator Quantity Value Description PackageReference PartNumber Manufacturer
!PCB1 1 Printed Circuit Board LED-040 Any
C1 1 220pF CAP, CERM, 220 pF, 25 V, +/- 10%, X7R, 0201 0201 GRM033R71E221KA01D MuRata
C1p8V, C5pOV, Ci3p3V, Co3p3 4 1uF CAP, CERM, 1 uF, 16 V, +/- 10%, X7R, 0603 0603 C1608X7R1C105K080AC TDK
CBATT 1 100uF CAP, CERM, 100 uF, 6.3 V, +/- 20%, X5R, 1206 1206 GRM31CR60J107ME39L MuRata
Cin1, Cin2, Cout1, Cout2 4 10uF CAP, CERM, 10 µF, 10 V,+/- 20%, X5R, 0402 0402 GRM155R61A106ME44 MuRata
CSNUB 1 3900pF CAP, CERM, 3900 pF, 10 V, +/- 10%, X7R, 0201 0201 GRM033R71A392KA01D MuRata
D1, D2, D3, D4 4 LED Lighting OSRAM OSTAR White 3V 1.4A 120° 1212 (3030 Metric) 1212 KW CSLPM1.TG-8N7P-EBVF46FCBB46-15B5-S OSRAM
J1 1 Standard Banana Jack, Insulated, Red 6091 6091 Keystone
J2 1 Standard Banana Jack, Insulated, Black 6092 6092 Keystone
J3, J8, J9, J10, J16, J18, J20, J28, J29 9 Header, 100mil, 1pos, Gold, TH Testpoint TSW-101-07-G-S Samtec
J5, J11, J12, J13, J14, J35 6 Header, 100mil, 2x1, Gold, TH 2x1 Header TSW-102-07-G-S Samtec
J6, J7, J15, J17, J19, J21, J22, J23, J24, J25, J26, J27, J30, J31, J32, J33, J34, J38 18 Header, 100mil, 3x1, Gold, TH 3x1 Header TSW-103-07-G-S Samtec
J36, J37 2 Header (shrouded), 100mil, 5x2, High-Temperature, Gold, TH 5x2 Shrouded header N2510-6002-RB 3M
L1 1 470nH Inductor, 470 nH, 4.8 A, 0.022 ohm, SMD 2x1.6mm HTEK20161T-R47MSR Cyntec
R1, R2, R3, R4 4 0.5 RES, 0.5, 1%, .33 W, 0805 0805 RL1220S-R50-F Susumu Co Ltd
R5, R6 2 0 RES, 0, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 RMCF0603ZT0R00 Stackpole Electronics Inc
R7, R8 2 49.9k RES, 49.9 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW040249K9FKED Vishay-Dale
R9 1 100k RES, 100 k, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 ERJ-3GEYJ104V Panasonic
R_SCL, R_SDA 2 1.0k RES, 1.0 k, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 CRCW06031K00JNEA Vishay-Dale
Rin 1 0 RES, 0, 5%, 0.25 W, 1206 1206 RC1206JR-070RL Yageo America
RSCL_3p3, RSDA_3p3 2 2.0k RES, 2.0 k, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 CRCW06032K00JNEA Vishay-Dale
RSNUB 1 1 RES, 1.00, 1%, 0.05 W, 0201 0201 RC0201FR-071RL Yageo America
SH-D1, SH-D2, SH-D3, SH-D4, SH-EN, SH-STRB1, SH-STRB2, SH-TORCH/TX, SH-VIO 9 Shunt, 100mil, Gold plated, Black Shunt 2 pos. 100 mil 881545-2 TE Connectivity
TH1, TH2 2 100k Thermistor NTC, 100k ohm, 5%, 0402 0402 NCP15WF104J03RC MuRata
U1 1 Synchronous Boost Quad LED Flash Driver with 2A High-Side Current Sources DSBGA25 LM3645YCGR Texas Instruments
U2 1 250-mA Ultra-Low-Noise, Low-IQ LDO, DBV0005A (SOT-23-5) DBV0005A LP5907MFX-3.3/NOPB Texas Instruments
U3 1 250-mA Ultra-Low-Noise, Low-IQ LDO, DBV0005A (SOT-23-5) DBV0005A LP5907MFX-1.8/NOPB Texas Instruments
U4 1 2-Bit Bidirectional 1-MHz I2C Bus and SMBus Voltage-Level Shifter, DCU0008A (VSSOP-8) DCU0008A TCA9406DCUR Texas Instruments
U5 1 4-bit Bidirectional Auto-direction Sensing Translator with Fully Symmetric 0.9V to 3.6V Range, RUT0012A (UQFN-12) RUT0012A TXB0304RUTR Texas Instruments