SC2440EVB

更新时间： 2024-10-01 04:05:27

品牌	Logo	应用领域
商升特 - SEMTECH		调节器开关
页数	文件大小	规格书
26页	660K
描述
2.5 MHz Dual Switching Regulator with Integrated 2A Switches

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

SC2440EVB 数据手册

SC2440

2.5 MHz Dual Switching Regulator

with Integrated 2A Switches

POWER MANAGEMENT

Description

Features

The SC2440 is an adjustable frequency dual current-

mode switching regulator with 2A integrated switches.

Its high frequency operation allows the use of small

inductors and capacitors, resulting in very compact power

supplies. The SC2440 is suitable for next generation XDSL

modems requiring operating frequencies in excess of 1.5

MHz. The two channels operate at 180° out of phase

for reduced input voltage ripples. Separate soft start/

shutdown pins allow independent control and output

sequencing for latch-up prevention. The SC2440 can also

be externally synchronized up to 2.5 MHz per channel.

u Up to 2.5 MHz/Channel Programmable Switching

Frequency

u Fixed Frequency Current-mode Control

u Wide Input Voltage Range 2.8V to 20V

u Out of Phase Switching Reduces Ripple

u Cycle-by-cycle Current-limiting

u Independent Shutdown/soft-start Pins

u Independent Hiccup Overload Protection

u Independent Power-Good Indicators

u Two 2A Integrated Switches

u External Synchronization

u Thermal Shutdown

u Thermally Enhanced 16-pin TSSOP Package

Current-mode PWM control allows fast transient

response with simple loop compensation. Cycle-by-cycle

current limiting and hiccup overload protection reduce

power dissipation during overload.

Applications

u XDSL and Cable Modems

u Set-up Boxes

u Point of Load Applications

u CPE Equipment

u DSP Power Supplies

u Disk Drives

Typical Application Circuit

100K

FB1

Efficiency vs Load Current

PGOOD1 BOOST1

0.1mF

1N4148

15.4K

470pF

OUT1

V_IN= 12V

V_OUT2= 5V

COMP1

SS1

SW1

3.3

3.3V/2A

23.3K

C7 10pF

22nF

VIN

12V

UPS120

SC2440

10mF

C15

10K

SYNC

ROSC

SS2

V_OUT1= 3.3V

UPS120

C10

15K

OUT2

5V/2A

22nF

SW2

COMP2

4.4

10pF

40.2K

0.1

24.3K

220pF

FB2

10mF

BOOST2

1N4148

100K

10K

GND PGOOD2

0.5

1.5

L1: Sumida CR43

L2: Falco D04012

Load Current (A)

Figure 1. 1.3MHz 12V to 3.3V and 5V Step-down Converter

Revision: March 5, 2007

www.semtech.com

12 3 4 5 6 7...26

中文翻译

下载PDF

与SC2440EVB相关器件

型号	品牌	获取价格	描述	数据表
SC2440TETRT	SEMTECH	获取价格	2.5 MHz Dual Switching Regulator with Integrated 2A Switches
SC2441	SEMTECH	获取价格	Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter
SC2441A	SEMTECH	获取价格	1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter
SC2441A_09	SEMTECH	获取价格	1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter
SC2441AEVB	SEMTECH	获取价格	1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter
SC2441ATETRT	SEMTECH	获取价格	1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter
SC2441EVB	SEMTECH	获取价格	Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter
SC2441ITSTRT	SEMTECH	获取价格	Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter
SC2442	SEMTECH	获取价格	High Performance Wide Input Range Dual Synchronous Buck Controller
SC2442H	SEMTECH	获取价格	High Performance Wide Input Range Dual Synchronous Buck Controller

与SC2440EVB相关文章

塔塔电子与力积电达成技术转让协议，携手建设印度首座晶圆厂
2024-09-29

36
英特尔震撼发布：128核心256线程的至强6性能核处理器
2024-09-29

30
SK海力士量产12层HBM3E，容量高达36GB
2024-09-27

28
意法半导体传感器驱动Sphere，开启沉浸式电影新时代
2024-09-27

39

产品中心

服务支持

精选活动

关于我们

帮助中心

SC2440EVB

SC2440EVB 数据手册

与SC2440EVB相关器件

与SC2440EVB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

SC2440EVB

SC2440EVB 数据手册

与SC2440EVB相关器件

与SC2440EVB相关文章

您还可以找

您在本页遇到什么问题？