IRU3033

5

Rev. 1.7

07/17/02

www.irf.com

Ref Desig

Description

Qty

Part #

Manuf

U1

LDO/Switcher IC

1

IRU3033CS (8-Pin SOIC)

IR

Q1

MOSFET

1

MTP3055 (TO-220)

Motorola

Q2

MOSFET

1

IRL3303 (TO-220)

IR

IRL3103S (TO-263) (Note 1)

D2

Diode, GP

1

1N4148

D1

Schottky Diode

1

MBR1045CT (TO-220)

MBRB1545CT (TO-263) (Note1)

Motorola

L2

Inductor

1

Core: T50-18, L=4

Micro Metal

Turns: 10T, 18 AWG

(core)

L1

Inductor

1

L=2

R1

Resistor

1

22

V, 5%, SMT 1206 size

R2

Resistor

1

10

V, 5%, SMT 1206 size

R3

Resistor

1

324K

V, 1%, SMT 0805 size

R4A*

Resistor

1

806

V, 1%, SMT 0805 size

R4B*

Resistor

1

90.9K

V, 1%, SMT 0805 size

R5A

Resistor

1

1.24K

V, 1%, SMT 0805 size

R5B

Resistor

1

2.49K

V, 1%, SMT 0805 size

R5C

Resistor

1

4.99K

V, 1%, SMT 0805 size

R5D

Resistor

1

1K

V, 1%, SMT 0805 size

R5E

Resistor

1

1.30K

V, 1%, SMT 0805 size

R6

Resistor

1

2 K

V, 1%, SMT 0805 size

R7

Resistor

1

1.21K

V,1%, SMT 0805 size

R8

Resistor

1

1 K

V, 5%, SMT 0805 size

R9

Resistor

1

10

V, 5%, SMT 0805 size

R10

Resistor

1

1K

V, 5%, SMT 0805 size

R11

Resistor

1

2.4K

V, 5%, SMT 0805 size

R13

Resistor

1

7.5K

V, 5%, SMT 0805 size

C1

Capacitor

1

6MV1500GX, 1500

C2

Capacitor

1

6MV1500GX, 1500

Sanyo

C3

Capacitor

1

1

C4

Capacitor

1

470pF, Ceramic, SMT 0805 size

Sanyo

C5

Capacitor

1

10pF, Ceramic, SMT 0805 size

Sanyo

C6

Capacitor

1

6MV1500GX, 1500

Sanyo

C7

Capacitor

4

6MV1500GX, 1500

Sanyo

C8

Capacitor

1

1

C9

Capacitor

1

470p, Ceramic, SMT 0805 size

HS1

Heat Sink

1

For MOSFET, 577002

Aavid

HS2

Heat Sink

1

For Schottky Diode , 577002

Aavid

HS3

Heat Sink

1

For Q1, 507222 (I/O curren<5A)

Aavid

576602 (I/O current< 3.5A)

*R4 is a parallel combination of R4A and R4B.

Note 1: For the applications where it is desirable to eliminate the heat sink, the IRL3103S for Q2 and

MBR1545CT for D2 in TO-263 packages with minimum of 1" square copper pad can be used.

APPLICATION PARTS LIST

Pentium Dual Supply