Datasheet.kr   

LX1663 데이터시트 PDF




Microsemi Corporation에서 제조한 전자 부품 LX1663은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 LX1663 자료 제공

부품번호 LX1663 기능
기능 SINGLE-CHIP PROGRAMMABLE PWM CONTROLLERS WITH 5-BIT DAC
제조업체 Microsemi Corporation
로고 Microsemi Corporation 로고


LX1663 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




전체 15 페이지수

미리보기를 사용할 수 없습니다

LX1663 데이터시트, 핀배열, 회로
T H E I N F I N I T E P O W E R O F I N N O VAT I O N
L I N D O C # : 1662
LX1662/62A, LX1663/63A
SINGLE-CHIP PROGRAMMABLE PWM CONTROLLERS WITH 5-BIT DAC
PRODUCTION DATA SHEET
DESCRIPTION
The LX1662/62A and LX1663/63A 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 LX1662A and
LX1663A have reduced current sense com-
parator threshold for optimum perfor-
mance using a PCB trace. For applications
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
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).
Smallest Package Size. The LX1662 is
available in a narrow body 14-pin surface
mount IC package for space sensitive appli-
cations. The LX1663 provides the additional
functions of Over Voltage Protection (OVP)
and Power Good (PWRGD) output drives
for applications requiring output voltage
monitoring and protection functions.
Ultra-Fast Transient Response Re-
duces System Cost. The modulated off-
time architecture results in the fastest tran-
sient response for a given inductor, reduc-
ing output capacitor requirements, and re-
ducing the total regulator system cost.
Over-Voltage Protection and Power
Good Flag. The OVP output in the LX1663
& LX1663A can be used to drive an SCR
crowbar circuit to protect the load in the
event of a short-circuit of the main MOSFET.
The LX1663 & LX1663A also have a logic-
level Power Good Flag to signal when the
output voltage is out of specified limits.
IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.
PRODUCT HIGHLIGHT
KEY FEATURES
I 5-bit Programmable Output For CPU Core
Supply
I No Sense Resistor Required For Short-
Circuit Current Limiting
I Designed To Drive Either Synchronous Or
Non-Synchronous Output Stages
I Lowest System Cost Possible For Price-
Sensitive Pentium And Pentium II Class
Applications
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
(LX1663 only)
I Small, Surface-Mount Packages
A P P L I C AT I O N S
I Socket 7 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
I General Purpose DC:DC Converter
Applications
LX1662
IN A PENTIUM/PENTIUM II
SINGLE-CHIP POWER
SUPPLY SOLUTION
C3
0.1µF
VID0
VID1
VID2
VID3
VID4
12V 5V
U1
LX1662
1 SS
2 INV
V3
CC_CORE
4 VID0
5 VID1
6 VID2
7 VID3
VC1 14
TDRV 13
GND 12
BDRV 11
VCC 10
CT 9
VID4 8
14-pin, Narrow Body SOIC
L2
1µH
C5
1µF
Q1
IRL3102
6.3V
1500µF x3
C2
C8
680pF
L1, 2.5µH
R1
Q2
IRL3303
2.5m9
6.3V, 1500µF x 3**
** Three capacitors for Pentium
Four capacitors for Pentium II
Supply Voltage VOUT
for CPU Core
C1
TA (°C)
PACKAGE ORDER INFORMATION
N
Plastic DIP
14-pin
N
Plastic DIP
16-pin
D
Plastic SOIC
14-pin
D
Plastic SOIC
16-pin
0 to 70
LX1662CN
LX1662ACN
LX1663CN
LX1663ACN
LX1662CD
LX1662ACD
LX1663CD
LX1663ACD
Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (i.e. LX1662CDT)
Copyright © 1999
Rev. 1.1 11/99
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1




LX1663 pdf, 반도체, 판매, 대치품
PRODUCT DATABOOK 1996/1997
LX1662/62A, LX1663/63A
SINGLE-CHIP PROGRAMMABLE PWM CONTROLLERS WITH 5-BIT DAC
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS
Table 1 - Adaptive Transient Voltage Output (Output Voltage Setpoint — Typical)
Processor Pins
0 = Ground, 1 = Open (Floating)
Output Voltage (VCC_CORE)
VID4 VID3 VID2 VID1 VID0
0.0A
Nominal Output*
01111
1.34V
1.30V
01110
1.39V
1.35V
01101
1.44V
1.40V
01100
1.49V
1.45V
01011
1.54V
1.50V
01010
1.59V
1.55V
01001
1.64V
1.60V
01000
1.69V
1.65V
00111
1.74V
1.70V
00110
1.79V
1.75V
00101
1.84V
1.80V
00100
1.89V
1.85V
00011
1.94V
1.90V
00010
1.99V
1.95V
00001
2.04V
2.00V
00000
2.09V
2.05V
11111
2.04V
2.00V
11110
2.14V
2.10V
11101
2.24V
2.20V
11100
2.34V
2.30V
11011
2.44V
2.40V
11010
2.54V
2.50V
11001
2.64V
2.60V
11000
2.74V
2.70V
10111
2.84V
2.80V
10110
2.94V
2.90V
10101
3.04V
3.00V
10100
3.14V
3.10V
10011
3.24V
3.20V
10010
3.34V
3.30V
10001
3.44V
3.40V
10000
3.54V
3.50V
* Nominal = DAC setpoint voltage with no adaptive output voltage positioning.
Note:
Adaptive Transient Voltage Output
In order to improve transient response a
40mV offset is built into the Current Sense
comparator. At high currents, the peak
output voltage will be lower than the
nominal set point , as shown in Figure 1.
The actual output voltage will be a function
of the sense resistor, output current and
output ripple.
Time - 100µs/Div.
FIGURE 1 — Output Transient Response
(Using 5msense resistor and 5µH output inductor)
4 Copyright © 1999
Rev. 1.1 11/99

4페이지










LX1663 전자부품, 판매, 대치품
PRODUCT DATABOOK 1996/1997
LX1662/62A, LX1663/63A
SINGLE-CHIP PROGRAMMABLE PWM CONTROLLERS WITH 5-BIT DAC
PRODUCTION DATA SHEET
Pin
Name
SS
INV
VCC_CORE
VID0
VID1
VID2
VID3
VID4
LX1662
Pin #
1
2
3
4
5
6
7
8
PWRGD
OV
CT
VCC
BDRV
N.C.
N.C.
9
10
11
GND
TDRV
VC1
12
13
14
LX1663
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
FUNCTIONAL PIN DESCRIPTION
Description
Soft-Start pin, internally connected to the non-inverting input of the error comparator.
Inverting input of the error comparator.
Output voltage. Connected to non-inverting input of the current-sense comparator.
Voltage Identification pin (LSB) input used to set output voltage.
Voltage Identification pin (2nd SB) input.
Voltage Identification pin (3rd SB) input.
Voltage Identification pin (4th SB) input.
Voltage Identification pin (MSB) input. This pin is also the range select pin — when low
(CLOSED), output voltage is set to between 1.30 and 2.05V in 0.05V increments. When high
(OPEN), output is adjusted from 2.0 to 3.5V in 0.1V increments.
Open collector output pulls low when the output voltage is out of limits.
SCR driver goes high when the processor's supply is over specified voltage limits.
The off-time is programmed by connecting a timing capacitor to this pin.
This is the (12V) supply to the IC, as well as gate drive to the bottom FET.
This is the gate drive to the bottom FET. Leave open in non-synchronous operation (when bottom
FET is replaced by a Schottky diode).
Both power and signal ground of the device.
Gate drive for top MOSFET.
This pin is a separate power supply input for the top drive. Can be connected to a charge pump
when only 12V is available.
Copyright © 1999
Rev. 1.1 11/99
7

7페이지


구       성 총 15 페이지수
다운로드[ LX1663.PDF 데이터시트 ]

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트를 제공합니다.


구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 :     [ 홈페이지 ]     [ 블로그 1 ]     [ 블로그 2 ]



관련 데이터시트

부품번호상세설명 및 기능제조사
LX1660

ADVANCED PWM CONTROLLER

Microsemi Corporation
Microsemi Corporation
LX1661

ADVANCED PWM CONTROLLER

Microsemi Corporation
Microsemi Corporation

DataSheet.kr       |      2020   |     연락처      |     링크모음      |      검색     |      사이트맵