- 您现在的位置：买卖IC网 > PDF目录30779 > LX2750CLQ (MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP) SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PQCC16 PDF资料下载
参数资料
| 型号： | LX2750CLQ |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PQCC16 |
| 封装： | 3 X 3 MM, ROHS COMPLIANT, PLASTIC, MLPQ-10 |
| 文件页数： | 1/11页 |
| 文件大小： | 388K |
| 代理商： | LX2750CLQ |
LX2750
Microsemi
Analog Mixed Signal Group
1
Rev. 1.0a
07/14/10
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
TYPICAL APPLICATION
DESCRIPTION
The LX2750 controller IC is a compact synchronous
Buck controller IC with 16 lead MLPQ package de-
signed for step-down DC to DC converter applications.
Selectable feedforward voltage mode control or con-
stant on time control provides fast dynamic response.
Selectable diode emulation mode greatly improves the
light load efficiency. The LX2750 controller is optimized
to convert single supply 12V bus voltage to as low as
0.8V output voltage. An internal regulator converts bus
voltage to 5V, which provides voltage supply to inter-
nal logic and driver circuit. The LX2750 employs pro-
grammable loss-less current limiting by sensing the
Rdson of synchronous MOSFET followed by hiccup
feature. Feedback under voltage also triggers hiccup.
Internal UVLO keeps the controller off until the bus
supply voltage exceeds 9V where internal digital soft
starts get initiated to ramp up output. The LX2750 em-
ploys NMOS LDO controller. Other features include:
5V gate drive for HDRV signal, 12V gate drive for LDRV
signal, programmable frequency, adaptive deadband
control.
n Single Input 12V Bus Voltage
n Excellent Dynamic Response with Selectable
Feedforward Voltage Mode Control or Constant On
Time Control
n
Diode Emulation Mode Available
n Programmable Switching Frequency Up to 2MHz
n
Internal Digital Soft Start Function
n Programmable Over Current Protection Triggers
Hiccup
n NMOS LDO Controller Available
n FB UVLO Followed by Hiccup Feature in Both
Controllers
n 5V High Side Driver and 12 V Low Side Driver
n Pb-free and RoHS Compliant
ORDERING INFORMATION
FEATURES
SINGLE INPUT SUPPLY PWM CONTROLLER WITH LDO
CONTROLLER
APPLICATIONS
n Graphic Card on Board Converters
n On Board DC to DC such as
12V to 3.3V, 2.5V or 1.8V
n Set Top Box and LCD Display
n ASIC Power Supplies
PRODUCTION DATA SHEET
Figure1 - Typical application of LX2750
Device
Temperature
Package
Frequency
Pb-Free
LX2750CLQ
0 to 70o C
3X3 MLPQ-16L
200kHz to 2MHz
Yes
Pb Free Product
L
X
2
7
5
0
1
2
+1.8V@8A
VOUT1
15
14
13
11
BST
FB
COMP
SW
HDRV
LDRV
VIN
4
3
+1.1V
VOUT2
LDO_FB
LDO_DRV
7
MODE
+12V
VIN1
17
8
VCC
10
GND(PAD)
16
RT
Connected to GND Constant on time mode
Connected to 5VREG Voltage mode
PGOOD
12
6
VREF_OC
REFIN
GPIO
5
FCCM
9
Connected to GND Diode emulation mode
Connected to 5VREG synchronous mode
Note: Available in Tape & Reel. Append the letters "TR" to the part number. (i.e. LX2750CLQ-TR)
相关PDF资料 |
PDF描述 |
|---|---|
| LX2750CLQ-TR | SWITCHING CONTROLLER, PQCC16 |
| LX432ILP-TR | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PBCY3 |
| LX432CLP-TR | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PBCY3 |
| LX432ILPTR | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PBCY3 |
| LX432CSETR | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PDSO5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LX27901ID-TR | 制造商:Microsemi Corporation 功能描述:IC LED CTLR MULTIPUR HP 16SOIC |
| LX27912DW-TR | 制造商:Microsemi Corporation 功能描述:IC LED CTLR HI PERF 24SOIC |
| LX300+ II | 制造商:Epson Electronics America Inc 功能描述:PRINTER DOT MATRIX LX300+ II EPSON |
| LX3005 | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:2A STEP-DOWN CONVERTER |
| LX3005CDM | 制造商:Microsemi Corporation 功能描述:DC:DC CONVERTER - Bulk |
发布紧急采购，3分钟左右您将得到回复。