LX1670

PRODUCT DA T ABOOK 1996/1997

7

Copyright © 1997

Rev. 1.0

7/97

Pentium is a registered trademark of Intel Corporation.

APPLICA TION INFORMA TION

FIGURE 1 — LX1660/61 CONTROLLER USED WITH THE LX1670 PROGRAMMABLE REFERENCE/DAC CHIP FOR PENTIUM PRO PROCESSOR

OR PENTIUM II PROCESSOR APPLICATIONS. GUARANTEED TO MEET INTEL SPECIFICATIONS.

Note 1. Setup shown is for 5V application. For 12V input change the following: - Close JP1 and JP4

- Open JP2 and JP3

- For C2 and C11, use 16V/850µF capacitors instead

- Inductor L1 = 10µH

OV

OUT

ENABLE

BLKEN

GND

V

SENSE

VIDO

D4

D3

D2

D1

D0

D4B

V

CC

1

2

3

4

5

6

7

14

13

12

11

10

9

8

10K

C3

0.1µF

R2

VID4

VID3

VID2

VID1

VID0

P

GOOD

PWRGD

OUTEN

LX1670

C10

0.1µF

C7

0.1µF

1K

R3

C8

680pF

V

VREF

INV

NINV/SS

HICCUP

OT

ADJ

EN

PGND

BDRV

V

CC

SYNCEN

CS+

TDRV

V

C1

1

2

3

4

5

6

7

16

15

14

13

12

11

10

SGND

LX1661

C

T

8

C4

390µF

R4

1K

C9

1µF

R7 10

1K

R6

R8 10

R5

1K

C1

390pF

JP3

JP4

C19

0.1µF

VRM

CONTROLLER

D1

1N4148

D2

1N4148

Q1

IRL3103

Q2

IRL3103

C20

0.1µF

R13

10

L1

TOROID

5µH

R1

5m

Ω

Q3

2N6504

C13

C12

C5

SUPPLY OUTPUT CLAMP

C2

1500µF

6.3V

C11

JP2

JP1

5V

IN

12V

IN

F1

16A 32V

1500µF

6.3V

See Note 1

See Note 1

See Note 1

PRODUCTION DATA - Information contained in this document is proprietary to Linfinity, and is current as of publication date. This document

may not be modified in any way without the express written consent of Linfinity. Product processing does not necessarily include testing of

all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time.