lx1670 Microsemi Corporation, lx1670 Datasheet - Page 7

• Manufacturer Part Number: lx1670
• Description: 5 - Bit Programmable Votage Reference
• Manufacturer: Microsemi Corporation

Copyright © 1997
Rev. 1.0
PWRGD
OUTEN
Note 1. Setup shown is for 5V application. For 12V input change the following: - Close JP1 and JP4
7/97
FIGURE 1 — LX1660/61 CONTROLLER USED WITH THE LX1670 PROGRAMMABLE REFERENCE/DAC CHIP FOR PENTIUM PRO PROCESSOR
1
2
3
4
5
6
7
VIDO
V
P
OV
ENABLE
BLKEN
GND
GOOD
SENSE
OUT
0.1µF
C10
LX1670
D4B
V
D4
D3
D2
D1
D0
CC
OR PENTIUM II PROCESSOR APPLICATIONS. GUARANTEED TO MEET INTEL SPECIFICATIONS.
14
13
12
11
10
9
8
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.
VID4
VID3
VID2
VID1
VID0
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
5 - B
10K
R2
0.1µF
C3
I T
P
A P P L I C A T I O N I N F O R M A T I O N
R O D U C T I O N
P
R O G R A M M A B L E
0.1µF
C7
Pentium is a registered trademark of Intel Corporation.
1K
R3
390µF
680pF
C4
1K
C8
R4
1
2
3
4
5
6
7
8
- Open JP2 and JP3
- For C2 and C11, use 16V/850µF capacitors instead
- Inductor L1 = 10µH
EN
OT
SGND
V
INV
NINV/SS
HICCUP
C
VREF
T
ADJ
D
V
CONTROLLER
A T A
LX1661
O L T A G E
VRM
See Note 1
SYNCEN
PGND
TDRV
BDRV
CS+
CS-
V
V
CC
C1
S
16
15
14
13
12
11
10
9
1N4148
1N4148
JP4
R
H E E T
R7 10
E F E R E N C E
D1
D2
R8 10
C1
390pF
JP3
C9
1µF
1K
1K
R5
R6
R13
10
C20
0.1µF
C19
0.1µF
Q1
IRL3103
Q2
IRL3103
See Note 1
16A 32V
TOROID
F1
5µH
L1
SUPPLY OUTPUT CLAMP
1500µF
5m
R1
6.3V
LX1670
C2
JP1
JP2
See Note 1
1500µF
C5
Q3
2N6504
6.3V
C11
C12
12V
5V
IN
IN
C13
7