US3033

4-5

Rev. 1.5

1/14/99

Ref Desig

Description

Qty

Part #

Manufacturer

U1

LDO/Switcher IC

1

US3033CS ( 8 pin SOIC)

Unisem

Q1

MOSFET

1

MTP3055 (TO220)

Motorola

Q2

MOSFET

1

IRL3303 (TO220)

International

IRL3103S (TO263)

(note 1)

Rectifier

D2

Diode, GP

1

1N4148

D1

Schottky Diode

1

MBR1045CT (TO220)

MBRB1545CT (TO263) (note1)

Motorola

L2

Inductor

1

Core:T50-18,L=4 uH

Micro Metal

Turns: 10T, 18 AWG

(core)

L1

Inductor

1

L=2 uH

R1

Resistor

1

22 ohm,5%, SMT 1206 size

R2

Resistor

1

10 ohm, 5%, SMT 1206 size

R3

Resistor

1

324 kohm,1%, SMT 0805 size

R4A *

Resistor

1

806 ohm,1%, SMT 0805 size

R4B *

Resistor

1

90.9 kohm,1%, SMT 0805 size

R5A

Resistor

1

1.24 kohm,1%, SMT 0805 size

R5B

Resistor

1

2.49 kohm,1%, SMT 0805 size

R5C

Resistor

1

4.99 kohm,1%, SMT 0805 size

R5D

Resistor

1

10 kohm,1%, SMT 0805 size

R5E

Resistor

1

1.30 kohm,1%, SMT 0805 size

R6

Resistor

1

2k ohm,1%, SMT 0805 size

R7

Resistor

1

1.21k ohm,1%, SMT 0805 size

R8

Resistor

1

1 kohm,5%, SMT 0805 size

R9

Resistor

1

10 ohm,5%, SMT 0805 size

R10

Resistor

1

1k ohm,5%, SMT 0805 size

R11

Resistor

1

2.4k ohm,5%, SMT 0805 size

R13

Resistor

1

7.5k ohm,5%, SMT 0805 size

C1

Capacitor

1

6MV1500GX, 1500uF,6.3V, Elect

C2

Capacitor

1

6MV1500GX, 1500uF,6.3V, Elect

Sanyo

C3

Capacitor

1

1 uF,Ceramic, SMT 0805 size

C4

Capacitor

1

470 pF,Ceramic, SMT 0805 size

Sanyo

C5

Capacitor

1

10 pF,Ceramic, SMT 0805 size

Sanyo

C6

Capacitor

1

6MV1500GX, 1500uF,6.3V, Elect

Sanyo

C7

Capacitor

4

6MV1500GX, 1500uF,6.3V, Elect

Sanyo

C8

Capacitor

1

1 uF,Ceramic, SMT 0805 size

C9

Capacitor

1

470pF ,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 TO263

packages with minimum of 1" square copper pad can be used.

Pentium Dual Supply Application Parts List