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SC2442HITSTR

更新时间： 2024-10-01 02:56:55
品牌 Logo 应用领域
商升特 - SEMTECH 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管输出元件
页数 文件大小 规格书
10页 332K
描述
High Performance Wide Input Range Dual Synchronous Buck Controller

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中文翻译

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SC2442HITSTR 技术参数

生命周期：Obsolete零件包装代码：TSSOP
包装说明：MO-153AD, TSSOP-24针数：24
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.83
Is Samacsys：N其他特性：ADJUSTABLE OUTPUT VOLTAGE DOWN TO 0.75V
模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：36 V
最小输入电压：4.75 V标称输入电压：24 V
JESD-30 代码：R-PDSO-G24长度：7.8 mm
功能数量：1端子数量：24
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：0.5 A封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP24,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
认证状态：Not Qualified座面最大高度：1.2 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PHASE-SHIFT最大切换频率：1100 kHz
温度等级：AUTOMOTIVE端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
宽度：4.4 mmBase Number Matches：1

SC2442HITSTR 数据手册

 浏览型号SC2442HITSTR的Datasheet PDF文件第2页浏览型号SC2442HITSTR的Datasheet PDF文件第3页浏览型号SC2442HITSTR的Datasheet PDF文件第4页浏览型号SC2442HITSTR的Datasheet PDF文件第5页浏览型号SC2442HITSTR的Datasheet PDF文件第6页浏览型号SC2442HITSTR的Datasheet PDF文件第7页 
SC2442/H  
High Performance Wide Input Range  
Dual Synchronous Buck Controller  
POWER MANAGEMENT  
Description  
Features  
SC2442 and SC2442H are high performance dual buck  
converter controllers that can be configured for a variety  
of synchronous buck applications where efficiency is most  
important. Both converters are synchronized to prevent  
beat frequencies. The dual buck converters are also  
operated out of phase reducing input ripple, allowing for  
fewer input capacitors.  
‹ Dual output controller  
‹ Asynchronous start up mode  
‹ Power up sequencing to prevent latch-ups  
‹ Out of phase operation for low input ripple  
‹ Over current protection  
‹ Output down to 0.75V  
‹ Wide input range, 4.75 to 30V for SC2442 and  
4.75 to 36V for SC2442H  
‹ Vcc regulator with external PNP transistor  
‹ Programmable clock frequency up to 1.1MHz  
‹ Two synchronous bucks for high efficiency at high  
current  
High frequency operation up to 1.1 MHz reduces the size  
of output inductors and capacitors. The controller has  
separate power pins for both VCC and GND to improve  
noise immunity. The VCC supplies can be regulated to 7V  
using an external PNP transistor. Other features include:  
bootstrapping for high side drive supplies, asynchronous  
mode start up, power up sequencing to prevent latch-  
ups, individual soft start for each convertor, bootstrapped  
drivers for high side N-channel MOSFETs, input side  
current sensing, dual mode current limit with hiccup,  
enable and external frequency synchronization.  
‹ –40 to +125 Deg C operating temperature  
‹ Small package TSSOP-24  
‹ Fully WEEE and RoHS Compliant  
Applications  
‹ Point of load converter applications  
‹ DSL applications with multiple output voltages  
‹ Power management for mixed signal applications  
‹ Cable modems and set top boxes.  
The SC2442 operates over the range of 4.75V to 30V  
and SC2442H operates over the range of 4.75V to 36V.  
Typical Application Circuit  
R1  
MAX 30V/36V(H)  
VIN+  
R2  
Q1  
R5  
R3  
R4  
L1  
C1  
VOUT1  
Q5  
Q3  
C6  
C7  
C2  
OC1  
OC2  
R9  
R7  
RTN  
RTN  
Q2  
D1  
D2  
3
2
4
R6  
R8  
VIN  
OC1  
OC2  
U1  
L2  
21  
9
BDI  
VOUT2  
C4  
AVCC  
PVCC  
1
Q4  
AVCC  
PVCC  
SS1  
SS2  
ROSC  
FB1  
GD1H  
GD1L  
GD2H  
GD2L  
PH1  
13  
7
11  
16  
14  
10  
8
C3  
R10  
18  
23  
6
C5  
RTN  
PH1  
SS1  
SS2  
OSC  
BST1  
PH2  
R13  
R15  
R14  
R16  
BST1  
PH2  
C8  
C15  
C16  
5
15  
17  
12  
24  
EA1  
BST2  
19  
20  
22  
C9  
FB2  
BST2  
PGND  
EA2  
R12  
SYNC/EN AGND  
RTN  
R11  
C10  
C11  
EA2  
RTN  
R17  
C12  
R18  
C13  
FB2  
ENA  
FB1  
Revision: June, 2007  
1
www.semtech.com  
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中文翻译

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SC2442HITSTR 替代型号

型号 品牌 替代类型 描述 数据表
SC2442ITSTRT SEMTECH

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