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參數(shù)資料
| 型號(hào)： | LX1669CD |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | PROGRAMMABLE DC : DC CONTROLLER |
| 中文描述： | 1 A SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | ROHS COMPLIANT, PLASTIC, SOIC-16 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 337K |
| 代理商： | LX1669CD |
LIN D
OC
#: 1669
LX1669
D E S C R I P T I O N
K E Y F E AT U R E S
I
5-Bit Programmable Output For CPU Core
Supply
I
Power Solution For Pentium II Processors
I
No Sense Resistor Required For Short-Circuit
Current Limiting
I
Soft-Start And Hiccup-Mode Current
Limiting Functions
I
Modulated Constant Off-Time Control
Mechanism For Fast Transient Response And
Simple System Design
I
Power Good Flag
I
Over-Voltage Pin Can Drive SCR Crowbar Or
Turn Off Signal Silver-Box Power Supply
I
Digital-Compatible Inputs
(Including VID Pins)
The LX1669 is a Monolithic Switching
Regulator Controller IC
designed to
provide a low cost, high performance
adjustable power supply for advanced
microprocessors and other applications
requiring a very fast transient response
and a high degree of accuracy. It provides
a programmable switching regulator out-
put suitable for powering Pentium
II and
other processors.
Programmable Synchronous Recti-
fier Driver for CPU Core.
The main
output is adjustable from 1.3 to 3.5V using
a TTL-compatible 5-bit digital code to
meet Intel specifications. The IC can read
the signal from a DIP-switch, hardwired to
Pentium II processor’s pins or from soft-
ware. The 5-bit code adjusts the output
voltage between 1.30 and 2.05V in 50mV
increments, and between 2.0 and 3.5V in
100mV increments. The device can drive
dual MOSFET’s resulting in typical effi-
ciencies of 85 – 90%, even with loads in
excess of 10A.
Short-circuit Current Limiting with-
out Expensive Current Sense Resis-
tors.
The current sensing mechanism can
use a PCB trace resistance or the parasitic
resistance of the main inductor. For
applications requiring a high degree of
accuracy, a conventional sense resistor
can be used.
Ultra-Fast Transient Response Re-
duces System Cost.
The fixed frequency
modulated off-time architecture results in
the fastest transient response for a given
inductor.
Small Package Size.
The LX1669 is
available in an economical 16-pin narrow
body SOIC package.
P R O D U C T H I G H L I G H T
P
R O G R A M M A B L E
D C : D C C
O N T R O L L E R
P
R O D U C T I O N
D
A T A
S
H E E T
T
H E
I
N F I N I T E
P
O W E R
O F
I
N N O V A T I O N
A P P L I C AT I O N S
I
Socket 7 Processor Supplies
I
Pentium II Processor Supplies
I
Deschutes CPU & L2-Cache Memory
Supplies
I
Voltage Regulator Modules
I
General Purpose And Microprocessor
DC:DC Supplies
Note: All surface-mount packages are available in Tape & Reel, append the letter "T" to part number. (i.e. LX1669CDT)
PACKAGE ORDER INFO
D
T
A
(°C)
0 to 70
LX1669CD
Copyright 1999
Rev. 1.0 4/99
1
11861 W
ESTERN
A
VENUE
, G
ARDEN
G
ROVE
, CA. 92841, 714-898-8121, F
AX
: 714-893-2570
L
I N
F
I N I T Y
M
I C R O E L E C T R O N I C S
I
N C
.
L
5V
CPU Core
V
CORE
C2
1500μFx3
Q1
IRL3102
Q2
IRL3303
L1
2.5μH
C1
1500μF x 6
R
SENSE
2.5m
C8
1μF
TDRV
V
CC12
V
CC5
PWRGD
OVP
VID0
VID1
VID2
PGND
BDRV
AGND
SS/EN
V
FB
V
CORE
VID4
VID3
8
VID3
VID2
VID1
VID0
VID4
C3
1μF
12V
7
6
5
4
3
2
1
11
12
13
14
15
16
9
10
L2,
1μH
Q4*
SCR
2N6504
R3
10k
C
SS
0.1μF
PWRGD
* Q4 optional OVP crowbar
Plastic SOIC
16-pin
NOTE:
For current data & package dimensions, visit our web site:
http://www.linfinity.com.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LX1669CDT | Current-Mode SMPS Controller |
| LX1670 | 5 - BIT PROGRAMMABLE VOTAGE REFERENCE |
| LX1670CD | 5 - BIT PROGRAMMABLE VOTAGE REFERENCE |
| LX1670CDT | VID CONTROLLER |
| LX1681 | VOLTAGE - MODE PWM CONTROLLERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LX1669CDT | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Current-Mode SMPS Controller |
| LX1670 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:5 - BIT PROGRAMMABLE VOTAGE REFERENCE |
| LX1670CD | 功能描述:IC REF/MON VOLT 5BIT PROG 14SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| LX1670CDT | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:VID CONTROLLER |
| LX1671 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Multiple Output LoadSHARE? PWM |
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