SC4524A

更新时间： 2024-11-19 04:05:23

品牌	Logo	应用领域
商升特 - SEMTECH		稳压器开关
页数	文件大小	规格书
18页	741K
描述
28V 2A Step-Down Switching Regulator

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中文翻译

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数据手册

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SC4524A 数据手册

SC4524A

28V 2A Step-Down Switching Regulator

POWER MANAGEMENT

Features

Description



Wide input range: 3V to 28V

2A Output Current

200kHz to 2MHz Programmable Frequency

Precision ꢀV Feedback Voltage

Peak Current-Mode Control

Cycle-by-Cycle Current Limiting

Hiccup Overload Protection with Frequency Foldback

Soft-Start and Enable

Thermal Shutdown

The SC4524A is a constant frequency peak current-mode

step-down switching regulator capable of producing 2A

output current from an input ranging from 3V to 28V. The

switching frequency of the SC4524A is programmable

up to 2MHz, allowing the use of small inductors and

ceramic capacitors for miniaturization, and high input/

output conversion ratio. The SC4524A is suitable for

next generation XDSL modems, high-deﬁnition TVs and

various point of load applications.

Thermally Enhanced 8-pin SOIC Package

Fully RoHS and WEEE compliant

Peak current-mode PWM control employed in the

SC4524Aachievesfasttransientresponsewithsimpleloop

compensation. Cycle-by-cycle current limiting and hiccup

overload protection reduces power dissipation during

output overload. Soft-start function reduces input start-

up current and prevents the output from overshooting

during power-up.

Applications



XDSL and Cable Modems

Set Top Boxes

Point of Load Applications

CPE Equipment

DSP Power Supplies

LCD and Plasma TVs

The SC4524A is available in SOIC-8 EDP package.

Typical Application Circuit

Efficiency

10V – 28V

1N4148

2.2mF

0.1mF

BST

OUT

5V/2A

V_IN= 12V

V_IN=24V

8.2mH

SC4524A

SS/EN

42.2k

GND

COMP

ROSC

20BQ030

10.5k

22mF

28.0k

18.2k

10nF

10pF

2.2nF

0.5

1.5

L1: Coiltronics DR73-8R2

C2: Murata GRM31CR60J226K

C4: Murata GRM31CR71H225K

Load Current (A)

Figure 1. 1MHz 10V-28V to 5V/2A Step-down Converter

November 2, 2007

ꢀ

12 3 4 5 6 7...18

中文翻译

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与SC4524A相关器件

型号	品牌	获取价格	描述	数据表
SC4524A_08	SEMTECH	获取价格	28V 2A Step-Down Switching Regulator
SC4524AEVB	SEMTECH	获取价格	28V 2A Step-Down Switching Regulator
SC4524ASETRT	SEMTECH	获取价格	28V 2A Step-Down Switching Regulator
SC4524B	SEMTECH	获取价格	16V 2A Step-Down Switching Regulator
SC4524B_08	SEMTECH	获取价格	18V 2A Step-Down Switching Regulator
SC4524BEVB	SEMTECH	获取价格	16V 2A Step-Down Switching Regulator
SC4524BSETRT	SEMTECH	获取价格	16V 2A Step-Down Switching Regulator
SC4524C	SEMTECH	获取价格	28V 2A Step-Down Switching Regulator Wide input range: 3V to 28V
SC4524CSETRT	SAMTEC	获取价格	28V 2A Step-Down Switching Regulator
SC4524D	SEMTECH	获取价格	18V 2A Step-Down Switching Regulator 2A Output Current