DatasheetsPDF.com

SC4524A

Semtech Corporation
Part Number SC4524A
Manufacturer Semtech Corporation
Description 28V 2A Step-Down Switching Regulator
Published Nov 17, 2008
Detailed Description SC4524A 28V 2A Step-Down Switching Regulator POWER MANAGEMENT Features Wide input range: 3V to 28V 2A Output Current  2...
Datasheet PDF File SC4524A PDF File

SC4524A
SC4524A

Overview
SC4524A 28V 2A Step-Down Switching Regulator POWER MANAGEMENT Features Wide input range: 3V to 28V 2A Output Current  200kHz to 2MHz Programmable Frequency  Precision 1V Feedback Voltage  Peak Current-Mode Control  Cycle-by-Cycle Current Limiting  Hiccup Overload Protection with Frequency Foldback www.
DataSheet4U.
com  Soft-Start and Enable  Thermal Shutdown  Thermally Enhanced 8-pin SOIC Package  Fully RoHS and WEEE compliant   Description 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.
Peak current-mode PWM control employed in the SC4524A achieves fast transient response with simple loop compensation.
Cycle-by-cycle current limiting and hiccup overload protection reduces power dissipation during output overload.
Soft-start function reduces input startup current and prevents the output from overshooting during power-up.
The SC4524A is available in SOIC-8 EDP package.
Applications       XDSL and Cable Modems Set Top Boxes Point of Load Applications CPE Equipment DSP Power Supplies LCD and Plasma TVs Typical Application Circuit 10V – 28V C4 2.
2mF D1 1N4148 C1 0.
1mF L1 8.
2mH R4 42.
2k SS270 REV 4 Efficiency V 90 85 80 5V/2A OUT IN IN BST SW Efficiency (%) 75 70 65 60 55 50 45 40 0 VIN = 12V VIN = 24V SS/EN SC4524A FB COMP C7 10nF R7 28.
0k ROSC GND D2 20BQ030 R6 10.
5k C2 22mF C8 10pF R5 18.
2k C5 2.
2nF L1: Coiltronics DR73-8R2 C2: Murata GRM31CR60J226K C4: Murata GRM31CR71H225K 0.
5 1 1.
5 2 Load Current (A) Figure 1.
1MHz 10V-28V to 5V/2A Step-down Converter November 2, 2007  Efficiency of the 1MHz 10V-28V to 5V/2A...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)