Datasheet > LX2750

LX2750

更新时间： 2024-11-06 12:20:19

品牌	Logo	应用领域
美高森美 - MICROSEMI		输入元件控制器
页数	文件大小	规格书
11页	394K
描述
SINGLE INPUT SUPPLY PWM CONTROLLER WITH LDO CONTROLLER

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LX2750 数据手册

LX2750

SINGLE INPUT SUPPLY PWM CONTROLLER WITH LDO

CONTROLLER

PRODUCTION DATA SHEET

Pb Free Product

FEATURES

DESCRIPTION

Single Input 12V Bus Voltage

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.

Excellent Dynamic Response with Selectable

Feedforward Voltage Mode Control or Constant On

Time Control

Diode Emulation Mode Available

Programmable Switching Frequency Up to 2MHz

Internal Digital Soft Start Function

Programmable Over Current Protection Triggers

Hiccup

NMOS LDO Controller Available

FB UVLO Followed by Hiccup Feature in Both

Controllers

5V High Side Driver and 12 V Low Side Driver

Pb-free and RoHS Compliant

APPLICATIONS

Graphic Card on Board Converters

On Board DC to DC such as

12V to 3.3V, 2.5V or 1.8V

Set Top Box and LCD Display

ASIC Power Supplies

TYPICAL APPLICATION

VIN1

+12V

VIN

BST

HDRV

VCC

VOUT1

+1.8V@8A

PGOOD

MODE

Connected to 5VREG Voltage mode

Connected to GND Constant on time mode

LDRV

Connected to 5VREG synchronous mode

Connected to GND Diode emulation mode

FCCM

COMP

VREF_OC

REFIN

LDO_DRV

LDO_FB

VOUT2

+1.1V

GPIO

GND(PAD)

Figure1 - Typical application of LX2750

ORDERING INFORMATION

Device

LX2750CLQ

Temperature

0 to 70^oC

Package

3X3 MLPQ-16L

Frequency

Pb-Free

Yes

200kHz to 2MHz

Note: Available in Tape & Reel. Append the letters "TR" to the part number. (i.e. LX2750CLQ-TR)

Rev. 1.0a

07/14/10

Microsemi

Analog Mixed Signal Group

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

12 3 4 5 6 7...11

中文翻译

下载PDF

与LX2750相关器件

型号	品牌	获取价格	描述	数据表
LX2750CLQ	MICROSEMI	获取价格	Switching Controller, Voltage-mode, 2000kHz Switching Freq-Max, PQCC16, 3 X 3 MM, ROHS COM
LX2750CLQ-TR	MICROSEMI	获取价格	Switching Controller, Voltage-mode, 2000kHz Switching Freq-Max, PQCC16, 3 X 3 MM, ROHS COM
LX2A100ME110A00CE0	HWE	获取价格	小型铝电
LX2A101MG200A00CE0	HWE	获取价格	小型铝电
LX2A220MF115A00CE0	HWE	获取价格	小型铝电
LX2A221MI250A00CE0	HWE	获取价格	小型铝电
LX2A330MF115A00CE0	HWE	获取价格	小型铝电
LX2A331ML250A00CE0	HWE	获取价格	小型铝电
LX2A470MG125A00CE0	HWE	获取价格	小型铝电
LX2A471ML300A00CE0	HWE	获取价格	小型铝电

与LX2750相关文章

英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

14
苹果iPhone 17将全系采用三星/LG显示LTPO OLED面板
2024-11-05

12
三星深化印度制造布局，供应链本地化进程加速
2024-10-29

36
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

33

产品中心

服务支持

精选活动

关于我们

帮助中心

LX2750

LX2750 数据手册

与LX2750相关器件

与LX2750相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LX2750

LX2750 数据手册

与LX2750相关器件

与LX2750相关文章

您还可以找

您在本页遇到什么问题？