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LX1673-06CPW Datasheet

  • LX1673-06CPW

  • PWM Controllers

  • 289.04KB

  • 13頁(yè)

  • ETC

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LX1673
I N T E G R A T E D
P R O D U C T S
High Frequency PWM Regulator
P
RELIMINARY
DESCRIPTION
KEY FEATURES
WWW .
Microsemi
.C
OM
The LX1673 is a highly integrated
power supply controller IC featuring one
PWM switching regulator stage with an
additional onboard linear regulator
driver.
With several switching frequencies
available (up to 900kHz) the LX1673
can be optimized for both cost and PCB
space.
Utilizing
external
compensation, a wide selection of
external components can be chosen for
use in any application while
maintaining stable operation.
The LX1673 incorporates fully
programmable soft-start and power
sequence capabilities. The LDO and
PWM have independent enable pins.
With onboard gate drivers, the
switching PWM output is capable of
sourcing up to 15A. The LX1673 also
features an additional Linear Regulator
Controller output, which when coupled
with an inexpensive MOSFET is capable
of supplying up to an additional 5A for
I/O, memory, and other supplies
surrounding today鈥檚 micro-processor
designs.
Each regulator output voltage is
programmed via a simple voltage-divider
network.
Integrated hiccup-mode current limiting
is implemented utilizing MOSFET R
DS(ON)
impedance. This enables the LX1673 to
monitor maximum current limit conditions
without the use of expensive current sense
resistors.
Two Independently Regulated
Outputs
Outputs As Low As 0.8V
Generated From An Internal 1%
Reference
Integrated High Current MOSFET
Drivers
300KHz, 600KHz, and 900KHz
High Frequency Operation
Minimizes External Component
Requirements
Soft-Start and Power Sequencing
Control
Adjustable Linear Regulator Driver
Output
No current-sense resistors
APPLICATIONS/BENEFITS
Video Card Power Supplies
PC Peripherals
Computer Add-On Cards
3.3V Power Conversion
DDR Memory Termination
IMPORTANT:
For the most current data, consult
MICROSEMI鈥檚
website:
http://www.microsemi.com
PRODUCT HIGHLIGHT
+3.3V
+5V
PWRGD
V
OUT1
+12V
+3.3V
20
1
LDGD
2
LDFB
V
OUT2
3
LDDIS
4
DGND
5
AGND
DIS
6
LDDIS
7
SS
8
EA+
EA-
9
CS
EAO
10
VS
11
VCCL
BDRV
14
13
VCC
12
+5V
19
18
17
16
15
+5V
LDVCC PWGD VC1 TDRV PGND
LX1673
DIS
LX1673
LX1673
T
A
(擄C)
0 to 70
0 to 70
0 to 70
PACKAGE ORDER INFO
Plastic TSSOP
Switching
PW
20-Pin
Frequency (kHz)
300
LX1673-03CPW
600
LX1673-06CPW
900
LX1673-09CPW
LQ
Plastic MLPQ
20-Pin
LX1673-03CLQ
LX1673-06CLQ
LX1673-09CLQ
Copyright
錚?/div>
2000
Rev. 0.3a, 2003-01-28
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1

LX1673-06CPW 產(chǎn)品屬性

  • 2,500

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 線性 + 切換式

  • -

  • 任何功能

  • 2

  • 600kHz

  • 控制器

  • 控制器

  • -

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 4.5 V ~ 5.5 V

  • -40°C ~ 85°C

  • *

  • 20-TSSOP（0.173"，4.40mm 寬）

  • *

  • -

LX1673-06CPW相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
    描述
    廠商
    下載
  • 英文版
    ADVANCED PWM CONTROLLER
    MICROSEMI ...
  • 英文版
    ADVANCED PWM CONTROLLER
    MICROSEMI
  • 英文版
    ADVANCED PWM CONTROLLER
    MICROSEMI ...
  • 英文版
    SINGLE-CHIP PROGRAMMABLE PWM CONTROLLERS WITH 5-BIT DAC
    MICROSEMI ...
  • 英文版
    SINGLE-CHIP PROGRAMMABLE PWM CONTROLLERS WITH 5-BIT DAC
    MICROSEMI
  • 英文版
    SINGLE-CHIP PROGRAMMABLE PWM CONTROLLERS WITH 5-BIT DAC
    MICROSEMI ...
  • 英文版
    DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC
    MICROSEMI
  • 英文版
    DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC
    MICROSEMI ...
  • 英文版
    DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC
    MICROSEMI
  • 英文版
    DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC
    MICROSEMI ...
  • 英文版
    PROGRAMMABLE MULTIPLE OUTPUT DC:DC CONTROLLER
    MICROSEMI
  • 英文版
    PROGRAMMABLE MULTIPLE OUTPUT DC:DC CONTROLLER
    MICROSEMI ...
  • 英文版
    PROGRAMMABLE DC : DC CONTROLLER
    MICROSEMI
  • 英文版
    PROGRAMMABLE DC : DC CONTROLLER
    MICROSEMI ...
  • 英文版
    5 - BIT PROGRAMMABLE VOTAGE REFERENCE
    MICROSEMI
  • 英文版
    5 - BIT PROGRAMMABLE VOTAGE REFERENCE
    MICROSEMI ...
  • 英文版
    Multiple Output LoadSHARE? PWM
    MICROSEMI
  • 英文版
    Multiple Output LoadSHARE? PWM
    MICROSEMI ...
  • 英文版
    Multiple Output LoadSHARE PWM
    MICROSEMI
  • 英文版
    Multiple Output LoadSHARE PWM
    MICROSEMI ...

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