16

LT1584/LT1585/LT1587

158457a

LT/TP 0404 1K REV A • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 1995

Guaranteed LT1584/LT1431 Circuit for the Intel 90MHz and 100MHz Pentium Processors

(Meets Intel Specifications with Worst-Case Tolerances)

LT1584

ADJ

IN

R1

1k

C2 TO C4

220

µF

10V

AVX TPS

3 EACH

5V

OUT

3

SEE NOTE 6

SEE NOTE 5

SEE NOTE 7

2

1

2

R2

1k

R4

6

5

4

3

2

1

R3E

117

Ω

R3D

83

Ω

C6

0.01

µF

C1

0.1

µF

C5

33pF

NPO

1

56

8

7

3

4

R3C

800

Ω

R3B

1.35k

R3A

1.15k

LT1431S

COMP COL

SGND FGND

REF

PGND

SGND

LT1584 • TA06

PGND

SENSE

PLACE IN MICROPROCESSOR

SOCKET CAVITY

C14 TO C23

1

µF

16V

AVX Y5V 0805

10 EACH

C8 TO C13

100

µF

10V

AVX TPS

6 EACH

NOTES: UNLESS OTHERWISE SPECIFIED

1. ALL RESISTOR VALUES ARE OHMS,

1/8W, 5%

2. ALL CAPACITORS ARE 50V, 20%

3. ALL POLARIZED CAPACITORS ARE AVX

TYPE TPS OR EQUIVALENT

4. INPUT CAPACITANCE MAY BE REDUCED

IF THE 5V SUPPLY IS WELL BYPASSED

5. FOR 100MHz PENTIUM PROCESSOR,

INPUT VOLTAGE MUST BE AT LEAST

4.85V AT THE REGULATOR INPUT

6. FOR PENTIUM VRE PROCESSOR,

R4 NOT INSTALLED

– FOR 3.3V OUTPUT, INSTALL 0

Ω JUMPER

RESISTOR R4

7. R3A TO R3E ARE B.I. TECHNOLOGY 627V100

C7

100

µF

10V

THERMALLOY

7021B-MT

+

+

+

LT1584/LT1431 Transient Response

for 3.8A Load Current Step*

50mV/DIV

100

µs/DIV

LT1584 • TA07

2A/DIV

*TRANSIENT RESPONSE

MEASURED WITH AN INTEL

POWER VALIDATOR.

POWER VALIDATOR

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Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417