SNVA103B October 2005 – February 2022 LM2743
Designator | Function | Part Description | Part Number |
---|---|---|---|
U1 | Controller | IC LM2744 TSSOP14 | Texas Instruments |
U2 | Low Dropout Reg | IC LM4140BCM-1.0 SOIC-8 | Texas Instruments |
C5 | VCC Decoupling | Ceramic Capacitor, 1 µF, 25 V, 10%, 0805 | Murata GRM216R61E105KA12B |
C7 | Soft Start Cap | Ceramic Capacitor, 12 nF, 25 V, 10%, 0805 | Vishay VJ0805Y123KXX |
C8 | Comp Cap | Ceramic Capacitor, 1.2 nF, 25 V, 10%, 0805 | Vishay VJ0805Y122KXX |
C9 | Comp Cap | Ceramic Capacitor, 15 pF, 50 V, 10%, 0805 | Vishay VJ0805A150KAA |
C10 | Cboot | Ceramic Capacitor, 0.1 µF, 25 V, 10%, 0805 | Vishay VJ0805Y104KXX |
C11 | Comp Cap | Ceramic Capacitor, 1.8 nF, 25 V, 10%, 0805 | Vishay VJ0805Y182KXX |
C12 | Input Filter Cap | Ceramic Capacitor, 10 μF, 25 V, 10%, 1210 | AVX 12103D106MAT |
C14 | Input Filter Cap | Ceramic Capacitor, 10 μF, 25 V, 10%, 1210 | AVX 12103D106MAT |
C16 | Output Filter Cap | 470 μF, 6.3 V, 10-mΩ ESR POScap | Sanyo 6TPD470 |
C21 | Reference Output Cap | Niobium Oxide Capacitor, 4.7 µF, 6 V | AVX NOJA475M0006R |
C22 | Reference Input Cap | Ceramic Capacitor, 0.47 µF, 25 V, 10%, 1206 | Vishay VJ1206Y474KXX |
R1 | VCC Filter Resistor | Resistor 10 Ω, .25 W, 0805 | Vishay CRCW08051000F |
R2 | Frequency Adjust Resistor | Resistor, 24.9 kΩ, .25 W, 0805 | Vishay CRCW08052492F |
R3 | Comp Resistor | Resistor, 21 kΩ, .25 W, 0805 | Vishay CRCW08052102F |
R4 | Current Limit Resistor | Resistor, 3.16 kΩ, .25 W, 0805 | Vishay CRCW08053161F |
R5 | Comp Resistor | Resistor, 2.94 kΩ, .25 W, 0805 | Vishay CRCW08052941F |
R6 | Resistor Divider, upper | Resistor, 10.0 kΩ, .25 W, 0805 | Vishay CRCW08051002F |
R7 | Resistor Divider, lower | Resistor, 59 kΩ, .25 W, 0805 | Vishay CRCW08055902F |
R8 | PWGD Pull-Up | Resistor, 100 kΩ, .25 W, 0805 | Vishay CRCW08051003F |
R10 | Zero Ohm | Resistor, 0 Ω, 0805 | Vishay CRCW08050000 |
R11 | Shut Down Pull-Up | Resistor, 100 kΩ, .25 W, 0805 | Vishay CRCW12061003F |
D2 | Bootstrap Diode | Schottky Diode, SOD-123 | MBR0530LTI |
L1 | Output Filter Inductor | Inductor 1 µH, 5.3 Arms, 10.2 mΩ | Cooper DR73-1R0 |
Q1-Q2 | Top and Bottom FETs | Dual N-MOSFET, VDS = 20 V, 24 mΩ at 2.5 V | Vishay 9926BDY |