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参数资料
| 型号： | LX1665CDW |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO18 |
| 封装： | PLASTIC, SOIC-18 |
| 文件页数： | 1/17页 |
| 文件大小： | 354K |
| 代理商： | LX1665CDW |
PRODUCT H IGHLIGHT
DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC
P RODUCTION D AT A S HEET
T HE
I NFINITE
P OWER
OF
I NNOV A TION
LX1664/64A, LX1665/65A
P ACKAGE ORDER INFORMATION
T
A (°C)
Plastic DIP
16-pin
0 to 70
LX1664CN
LX1665CN
LX1664CD
LX1665CDW
LX1664ACN
LX1665ACN
LX1664ACD
LX1665ACDW
N
Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (e.g. LX1664CDT)
Plastic DIP
18-pin
N
Plastic SOIC
16-pin
D
Plastic SOIC Wide
18-pin
DW
SS
TDRV
V
CC
INV
V
CC_CORE
VID0
VID1
VID2
VID3
OV
C
T
BDRV
GND
V
C1
U1
LX1665
VID3
C
5
1F
12V
R
1
V
OUT
5V
18-pin
Wide-Body SOIC
Q
1
IRL3102
2.5H
6.3V, 1500F x 3**
14
13
12
11
10
1
2
3
4
5
6
7
C
8
680pF
VID2
VID1
VID0
VID4
C
3
0.1F
0.0025
Supply Voltage
for CPU Core
6.3V
1500F x3
** Three capacitors for Pentium
Four capacitors for Pentium II
VID4
L
DRV
Supply Voltage
For I/O Chipset or GTL+ Bus
8
16
15
L
FB
PWRGD
9
PWRGD
OV
17
18
Q
2
IRL3303
Q
4
IRLZ44
C
7
330F
R
5
R
6
L
1
C
2
C
1
C
9
330F
F
1 20A
L
2
1H
LX1665 IN A PENTIUM II SINGLE-CHIP POWER SUPPLY SOLUTION
Copyright 1999
Rev. 1.2 11/99
1
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
L IN F INITY M ICROELECTRONICS I NC .
DESCRIPTION
KEY FEATURES
The LX1664/64A and LX1665/65A are
monolithic switching regulator con-
troller IC’s 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.
Short-circuit Current Limiting with-
out Expensive Current Sense Resistors.
Current-sensing mechanism can use PCB
trace resistance or the parasitic resistance of
the main inductor. The
LX1664A and
LX1665A have reduced current sense com-
parator threshold for optimum perfor-
mance using a sense resistor. For applica-
tions requiring a high degree of accuracy, a
conventional sense resistor can be used to
sense current.
Programmable Synchronous Recti-
fier Driver for CPU Core.
The main
output is adjustable from 1.3V to 3.5V using
a 5-bit code. The IC can read a VID signal
I 5-bit Programmable Output For CPU Core
Supply
I Adjustable Linear Regulator Driver Output
I No Sense Resistor Required For Short-
Circuit Current Limiting
I Designed To Drive Either Synchronous Or
Non-Synchronous Output Stages
I Soft-Start Capability
I Modulated, Constant Off-Time Architecture
For Fast Transient Response And Simple
System Design
I Available Over-Voltage Protection (OVP)
Crowbar Driver And Power Good Flag
(LX1665 only)
set by a DIP switch on the motherboard, or
hardwired into the processor’s package (as
in the case of Pentium Pro and Pentium II
processors). 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, conforming to the
Intel Corporation specification. The device
can drive dual MOSFET’s resulting in typical
efficiencies of 85 - 90% even with loads in
excess of 10 amperes. For cost sensitive
applications, the bottom MOSFET can be
replaced with a Schottky diode (non-syn-
chronous operation).
Linear Regulator Driver. The LX1664/
65 family of devices have a secondary
regulator output. This can drive a MOSFET
or bipolar transistor as a pass element to
construct a low-cost adjustable linear regu-
lator suitable for powering a 1.5V GTL+ bus
or 2.5V clock supply.
(continued next page)
APPLICATIONS
I Socket 7 (Pentium Class) Microprocessor
Supplies (including Intel Pentium Processor,
AMD-K6TM And Cyrix 6x86TM, Gx86TM and
M2TM Processors)
I Pentium II and Deschutes Processor & L2-
Cache Supplies
I Voltage Regulator Modules
IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.
See
next
page
for
Selection
Guide
相关PDF资料 |
PDF描述 |
|---|---|
| LX1665ACDW | 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO18 |
| LX1665ACDWT | 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO18 |
| LX1664ACD | 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO16 |
| LX1664ACDT | 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO16 |
| LX1664ACDT | 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LX1665CN | 功能描述:IC PWM DUAL OUT 5BIT DAC 18DIP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| LX1668 | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:PROGRAMMABLE MULTIPLE OUTPUT DC:DC CONTROLLER |
| LX1668CDW | 功能描述:IC CTRLR DC/DC PROG SW 20SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| LX1668CDWT | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:Analog IC |
| LX1668CPW | 功能描述:IC CTRLR DC/DC PROG SW 20TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
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