参数资料
| 型号： | SC4524ASETRT |
| 厂商： | Semtech |
| 文件页数： | 1/19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 ~ 28 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 300kHz ~ 1.3MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 105°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： | SC4524ASEDKR |
SC4524A
28V 2A Step-Down Switching Regulator
POWER MANAGEMENT
Features
Description
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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
Thermally Enhanced 8-pin SOIC Package
Fully RoHS and WEEE compliant
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
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 SC4524A is available in SOIC-8 EDP package.
Typical Application Circuit
SS270 REV 4
Efficiency
BST
IN
C5
V
IN
10V – 28V
C4
2.2 m F
SS/EN SC4524A
COMP ROSC GND
C7 R7 R5
10nF C8 28.0k 18.2k
10pF
2.2nF
SW
FB
D1
1N4148
C1
0.1 m F
L1
8.2 m H
D2
20BQ030
R4
42.2k
R6
10.5k
OUT
5V/2A
C2
22 m F
90
85
80
75
70
65
60
55
50
45
V IN = 12V
V IN = 24V
40
L1: Coiltronics DR73-8R2
C2: Murata GRM31CR60J226K
C4: Murata GRM31CR71H225K
0
0.5 1
Load Current (A)
1.5
2
Figure 1. 1MHz 10V-28V to 5V/2A Step-down Converter
June 26, 2008
Fig.1 Efficiency of the 1MHz 10V-28V to 5V/2A Step-Do
相关PDF资料 |
PDF描述 |
|---|---|
| SC4524BSETRT | IC REG BUCK 2A 8SOIC |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SC4524B | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:气门2A型降压型开关稳压器 |
| SC4524B_08 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:18V 2A Step-Down Switching Regulator |
| SC4524BEVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:18V 2A Step-Down Switching Regulator |
| SC4524BSETRT | 功能描述:IC REG BUCK 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:20 系列:SIMPLE SWITCHER® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12 |
| SC4524C | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:28V 2A Step-Down Switching Regulator Wide input range: 3V to 28V |
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