TYPICAL ? APPLICATION ?
+3.3V
10A ? Highly ? Integrated ? SupIRBuck TM ?
?
IR3475 ?
VCC
R1
TP1
VINS
R2
10K
10K
VIN
TP2
VIN
TP4
EN
EN
C1
1uF
C2
22uF
+ C3
68uF
FCCM
SW1
R3
200K
TP5
PGND
EN / FCCM
R4
C4
0.22uF
TP6
TP23
VOUTS
13.7K
PGNDS
VSW
ISET
L1
1.5uH
+3.3V
U1
IR3475
VSW
VOUT
TP7
VOUT
R6
open
C13
open
C6
C7
C8
C9
C10
C11
C12
TP11
PGOOD
R5
10K
TP13
SS
PGOOD
FB
SS
C20
0.1uF
1
2
3
4
5
6
7
FCCM
ISET
PGOOD
GND1
FB
SS
NC1
IR3475
PHASE
12
R13
open
C24
open
open
C15
open
open
C16
open
open
C17
open
330uF
C18
open
47uF
C19
open
open
C26
open
0.1uF
C27
open
TP24
PGNDS
TP10
PGND
TP14
+3.3V
+3.3V
C21
1uF
TP26
AGND
R12
4.99 ohms
C25
1uF
C14
open
R7
2.80K
TP18
VOLTAGE SENSE
TP16
VCC
VCC
C23
TP17
PGND
open
TP27
A
TP25
B
R11
20
R9
open
R8
2.55K
R10
TP28
VID
open
1
Q1
open
C22
open
?
Figure ? 4: ? Demoboard ? Schematic ? for ? VOUT ? = ? 1.05V, ? F S ? = ? 300kHz ?
?
DEMOBOARD ? BILL ? OF ? MATERIALS ?
QTY ?
3 ?
1 ?
2 ?
1 ?
1 ?
1 ?
1 ?
1 ?
3 ?
1 ?
1 ?
1 ?
1 ?
1 ?
1 ?
1 ?
1 ?
REFERENCE ? DESIGNATOR ?
C1, ? C21, ? C25 ?
C10 ?
C12, ? C20 ?
C2 ?
C3 ?
C4 ?
C9 ?
L1 ?
R1, ? R2, ? R5 ?
R11 ?
R12 ?
R3 ?
R4 ?
R7 ?
R8 ?
SW1 ?
U1 ?
VALUE ?
1.00uF ?
47uF ?
0.100uF ?
22.0uF ?
68uF ?
0.22uF ?
330uF ?
1.5uH ?
10.0K ?
20 ?
4.99 ?
200K ?
13.7K ?
2.80K ?
2.55K ?
SPST ?
IR3475 ?
DESCRIPTION ?
capacitor, ? X7R, ? 1.00uF, ? 25V, ? 0.1, ? 0603 ?
capacitor, ? 47uF, ? 6.3V, ? 805 ?
capacitor, ? X7R, ? 0.100uF, ? 25V, ? 0.1, ? 603 ?
capacitor, ? X5R, ? 22.0uF, ? 16V, ? 20%, ? 1206 ?
capacitor, ? electrolytic, ? 68uF, ? 25V, ? 0.2, ? SMD ?
capacitor, ? X5R, ? 0.22uF, ? 10V, ? 0.1, ? 0603 ?
capacitor, ? electrolytic, ? 330uF, ? 2.5V, ? 0.2, ? 7343 ?
inductor, ? ferrite, ? 1.5uH, ? 16.0A, ? 3.8mOhm, ? SMT ?
resistor, ? thick ? film, ? 10.0K, ? 1/10W, ? 0.01, ? 0603 ?
resistor, ? thick ? film, ? 20, ? 1/10W, ? 0.01, ? 603 ?
resistor, ? thick ? film, ? 4.99, ? 1/10W, ? 0.01, ? 603 ?
resistor, ? thick ? film, ? 200K, ? 1/10W, ? 0.01, ? 603 ?
resistor, ? thick ? film, ? 13.7K, ? 1/10W, ? 0.01, ? 603 ?
resistor, ? thick ? film, ? 2.80K, ? 1/10W, ? 0.01, ? 603 ?
resistor, ? thick ? film, ? 2.55K, ? 1/10W, ? 0.01, ? 0603 ?
switch, ? DIP, ? SPST, ? 2 ? position, ? SMT ?
4mm ? x ? 5mm ? QFN ?
MANUFACTURER ?
Murata ?
TDK ?
TDK ?
Taiyo ? Yuden ?
Panasonic ?
TDK ?
Sanyo ?
Cyntec ?
KOA ?
KOA ?
Vishay/Dale ?
KOA ?
KOA ?
KOA ?
KOA ?
C&K ? Components ?
IRF ?
PART ? NUMBER ?
GRM188R71E105KA12D ?
C2012X5R0J476M ?
C1608X7R1E104K ?
EMK316BJ226ML ‐ T ?
EEV ‐ FK1E680P ?
C1608X5R1A224K ?
2R5TPE330M9 ?
PIMB104T ‐ 1R5MS ‐ 39 ?
RK73H1J1002F ?
RK73H1JLTD20R0F ?
CRCW06034R99FNEA ?
RK73H1JLTD2003F ?
RK73H1JLTD1372F ?
RK73H1JLTD2801F ?
RK73H1J2551F ?
SD02H0SK ?
IR3475MTRPBF ?
4
March ? 27, ? 2013 ?? | ?? V2.2 ?? | ?? PD97602
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