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LX1670CD Datasheet

  • LX1670CD

  • 5 - BIT PROGRAMMABLE VOTAGE REFERENCE

  • 194.61KB

  • 7頁

  • MICROSEMI

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LIN D
O C
#:
1670
LX1670
5 - B
I T
P
R O G R A M M A B L E
V
O L TA G E
R
E F E R E N C E
T
H E
I
N F I N I T E
P
O W E R
O F
I
N N O VA T I O N
P
R O D U C T I O N
D
A T A
S
H E E T
DESCRIPTION
The LX1670 is a complete precision
reference and voltage monitor circuit
for the Intel Pentium
廬
Pro Processor
and other high-end microprocessor
supplies. It is designed for use in
conjunction with the LX1660/1661 PWM
controller. The LX1670 reads a 5-bit
voltage identification (VID) code from
the microprocessor and sets the output
voltage reference to be used by the
LX1660/61 controller. Together, they
convert +5 or 12V input power to an
adjustable output ranging from 1.8VDC
to 3.5VDC in 100mV steps (50mV steps
below 2.1V) with 1% DC system
accuracy.
p
p
p
p
p
K E Y F E AT U R E S
1% TOTAL OUTPUT ERROR
POWER GOOD, UV, 0V COMPARATORS
0V COMPARATOR HAS SCR DRIVE
UNDER-VOLTAGE LOCKOUT CAPABILITY
5-BIT INPUT FOR ADVANCED PENTIUM PRO
PROCESSOR APPLICATIONS (5
TH
BIT IS FOR
AUTOMATIC GAIN AND OFFSET SCALING)
p
IMPLEMENTS 1% DC ACCURATE CONTROL
SYSTEM
p
14-PIN NARROW BODY SOIC PACKAGE
PRODUCT HIGHLIGHT
A P P L I C AT I O N S
s
PENTIUM II & PENTIUM PRO VOLTAGE
REGULATOR MODULES
s
PROGRAMMABLE POWER SUPPLIES
s
VOLTAGE REFERENCE
s
ADVANCED MICROPROCESSOR SUPPLIES
T
Y P I C A L
A
P P L I C AT I O N
V
CC
OF THE
LX1670
5-Bit
Digital
Input
Word
BIT 0
BIT 1
BIT 2
BIT 3
BIT 4
Enable
Blank Enable
D0
D1
D2
D3
D4
ENABLE
BLKEN
GND
V
CC
VIDO
To PWM
Error Amplifier
SCR Drive
LX1670
OV
OUT
P
GOOD
Power Good
V
SENSE
System Output
Voltage
PA C K A G E O R D E R I N F O
T
A
(擄C)
0 to 70
D
Plastic SOIC
14-pin
LX1670CD
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. LX1670CDT)
F O R F U R T H E R I N F O R M AT I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1
Copyright 漏 1997
Rev. 1.0 7/97
11861 W
ESTERN
A
VENUE
, G
ARDEN
G
ROVE
, CA. 92841
1

LX1670CD 產(chǎn)品屬性

  • 2,500

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 專用型

  • -

  • 電壓參考，Intel Pentium? II 型，Pro

  • 2 V ~ 15 V

  • 1

  • 1.8 V ~ 3.5 V

  • 0°C ~ 70°C

  • 表面貼裝

  • 14-SOIC（0.154"，3.90mm 寬）

  • 14-SOIC

  • 管件

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