Datasheet

SLUU111 – June 2002
12
1-MHz, 3.3-V, High-Efficiency Synchronous Buck Converter With TPS43000 PWM Controller
5 Bill of Materials
Table 1 lists the board components and their values, which can be modified to meet the
application requirements.
. List of Materials
REFERENCE
DESIGNATOR
QTY PART NUMBER DESCRIPTION MFG SIZE
C1 1 GRM1885C1H271J K Capacitor, ceramic, 270 pF, 50 V, COG, 5% Murata 603
C2 1 GRM1885C1H3R0J K Capacitor, ceramic, 3 pF, 50 V, COG, 5% Murata 603
C3 1 GRM188R71H561J K Capacitor, ceramic, 560 pF, 50 V, 5% Murata 603
C4,C5,C6 3 GRM219R71C474K K Capacitor, ceramic, 0.47 µF, 16 V, X7R, 10% Murata 805
C7 1 LMK325BJ106MN Capacitor, ceramic, 10 µF, 10 V, 20% Taiyo-Yuden 1210
C9 1 JMK325BJ226MM Capacitor, ceramic, 22 µF, 6.3 V, 20% Taiyo-Yuden 1210
C8 1 EEFUD0D121R Capacitor, 120 µF, 4.0 V, 18 mΩ, 20% Panasonic 7343 (D)
D1 1 ZHCS2000 Diode, schottky, 2 A, 40 V Zetex SOT23–6
J1,J2 2 PTC36SAAN Header, 4-pin, 100 mil spacing, (36-pin strip) Sullins 0.100 x 4”
L1 1 U2PB–3R3 Inductor, SMT, 5.0 µH, 2.9 A, 24 mΩ Sumida 6.7 X 6.7 mm
R1 1 Std Resistor, chip, 100 kΩ, 1/16-W, 1% Std 603
R2 1 Std Resistor, chip, 115 kΩ, 1/16-W, 1% Std 603
R3 1 Std Resistor, chip, 5.76 kΩ, 1/16–W, 1% Std 603
R4 1 Std Resistor, chip, 37.4 kΩ, 1/16-W, 1% Std 603
R5 1 Std Resistor, chip, 1 kΩ, 1/16-W, 1% Std 603
R6 1 Std Resistor, chip, 32.4 kΩ, 1/16-W, 1% Std 603
R7 1 Std Resistor, chip, 49.9 kΩ, 1/16-W, 1% Std 603
Q1{ 1 Si3442DV MOSFET, N–channel, 2.5-V
GS
, 4 A, 70 mΩ Siliconix TSOP–6
Q2{ 1 Si3443DV MOSFET, P-channel, 2.5-V
GS
, 4.4 A, 90 mΩ Siliconix TSOP–6
U1{ 1 TPS43000PW Multi–topology high-frequency PWM controller
Texas
Instruments
TSSOP–16
TP1,TP2,TP5 3 240–333 Test point, red, 1 mm Farnell 0.038”
TP3,TP4,TP6 3 240–333 Test point, black, 1 mm Farnell 0.038”
N/A 1 SLVP217 Printed circuit board, FR4, 0.032, SMOBC any
†
Components can not be substituted.