参数资料
型号: SC4524BSETRT
厂商: Semtech
文件页数: 1/18页
文件大小: 0K
描述: IC REG BUCK 2A 8SOIC
产品培训模块: Power Supplies 101
标准包装: 1
类型: 降压(降压)
输出数: 1
输入电压: 3 V ~ 18 V
PWM 型: 电流模式
频率 - 开关: 300kHz ~ 1.3MHz
电流 - 输出: 2A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm Width)裸露焊盘
包装: 标准包装
供应商设备封装: 8-SOIC-EP
产品目录页面: 1358 (CN2011-ZH PDF)
其它名称: SC4524BSEDKR
SC4524B
18V 2A Step-Down Switching Regulator
POWER MANAGEMENT
Features
Description
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Wide input range: 3V to  8V
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
Thermally Enhanced 8-pin SOIC Package
Fully RoHS and WEEE compliant
The SC4524B is a constant frequency peak current-mode
step-down switching regulator capable of producing 2A
output current from an input ranging from 3V to  8V. The
switching frequency of the SC4524B is programmable
up to 2MHz, allowing the use of small inductors and
ceramic capacitors for miniaturization, and high input/
output conversion ratio. The SC4524B is suitable for
next generation XDSL modems, high-definition TVs and
various point of load applications.
Peak current-mode PWM control employed in the
SC4524B achieves fast transient response with simple loop
compensation. Cycle-by-cycle current limiting and hiccup
Applications
overload protection reduces power dissipation during
output overload. Soft-start function reduces input start-
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XDSL and Cable Modems
Set Top Boxes
Point of Load Applications
CPE Equipment
DSP Power Supplies
LCD and Plasma TVs
up current and prevents the output from overshooting
during power-up.
The SC4524B is available in SOIC-8 EDP package.
Typical Application Circuit
SS270 REV 4
Efficiency
IN
V
IN
10V – 16V
C4
2.2 m F
SS/EN
SC4524B
BST
SW
D1
1N4148
C1
0.1 m F
L1
6.8 m H
R4
102k
OUT
5V/2A
90
85
80
75
70
V IN = 12V
FB
65
COMP
ROSC
GND
60
C7
10nF
C8
10pF
R7
30.1k
C5
1nF
R5
18.2k
D2
20BQ030
R6
25.5k
C2
22 m F
55
50
45
40
L1: Wurth 744 778 9006
C2: Murata GRM31CR60J226K
0
0.5
1
1.5
2
C4: Murata GRM31CR61E225K
Load Current (A)
Figure 1. 1MHz 10V-16V to 5V/2A Step-down Converter
June 2, 2008
 
相关PDF资料
PDF描述
SC4524CSETRT IC REG BUCK ADJ 2A 8SOIC
SC4524DSETRT IC REG BUCK ADJ 2A 8SOIC
SC4524SETRT IC REG BUCK 2A 8SOIC
SC4525ASETRT IC REG BUCK 3A 8SOIC
SC4525CSETRT IC REG BUCK ADJ 3A 8SOIC
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SC4524CSETRT 功能描述:IC REG BUCK ADJ 2A 8SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压(降压) 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON(1.45x1) 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2
SC4524CSETRT-CUT TAPE 制造商:SEMTECH 功能描述:SC4524 Series 28 V 2 A 2 MHz Step-Down Switching Regulator - SOIC-8
SC4524D 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:18V 2A Step-Down Switching Regulator 2A Output Current
SC4524DSETRT 功能描述:IC REG BUCK ADJ 2A 8SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压(降压) 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON(1.45x1) 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2