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SC2602STR

更新时间: 2024-09-26 19:57:39
品牌 Logo 应用领域
商升特 - SEMTECH 开关光电二极管
页数 文件大小 规格书
16页 324K
描述
Switching Controller, Voltage-mode, 220kHz Switching Freq-Max, PDSO14, SOIC-14

SC2602STR 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Not Recommended零件包装代码:SOIC
包装说明:SOP, SOP14,.25针数:14
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.65
模拟集成电路 - 其他类型:SWITCHING CONTROLLER控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:12.6 V
最小输入电压:4.2 VJESD-30 代码:R-PDSO-G14
JESD-609代码:e0长度:8.65 mm
功能数量:1端子数量:14
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP14,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:1.75 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:PUSH-PULL最大切换频率:220 kHz
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3.9 mmBase Number Matches:1

SC2602STR 数据手册

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SC2602/SC2602A  
Synchronous Voltage Mode Controller  
for Distributed Power Supply Applications  
POWER MANAGEMENT  
Features  
Description  
The SC2602 and SC2602A are low-cost, full featured,  
synchronous voltage-mode controllers designed for use  
in single ended power supply applications where efficiency  
is of primary concern. Synchronous operation allows for  
the elimination of heat sinks in many applications. The  
SC2602s are ideal for implementing DC/DC converters  
needed to power advanced microprocessors in low cost  
systems, or in distributed power applications where effi-  
ciency is important. Internal level-shift, high-side drive  
circuitry, and preset shoot-thru control, allows the use of  
inexpensive N-channel power switches.  
‹ Synchronous operation for high efficiency (95%)  
‹ RDS(ON) current sensing  
‹ On-chip power good and OVP functions  
‹ Small size with minimum external components  
‹ Soft Start  
‹ Enable function  
Applications  
‹ Microprocessor core supply  
‹ Low cost synchronous applications  
‹ Voltage Regulator Modules (VRM)  
‹ DDR termination supplies  
‹ Networking power supplies  
‹ Sequenced power supplies  
SC2602s features include temperature compensated  
voltage reference, triangle wave oscillator and current  
sense comparator circuitry. Power good signaling, shut-  
down, and over voltage protection are also provided.  
The SC2602 operates at a fixed 200kHz and the  
SC2602A at 500kHz, providing a choice for optimum  
compromise between efficiency, external component size,  
and cost.  
Two SC2602s can be used together to sequence power up  
of telecom systems. The power good of the first SC2602  
connected to the enable of the second SC2602 makes  
this possible.  
Typical Application Circuit  
Typical Distributed Power Supply  
+5V  
+
R4  
C6  
680/6.3V  
C5  
C7  
C8  
Vin  
R1  
1k  
R2  
10  
U1  
C1  
0.1  
10.0  
680/6.3V  
680/6.3V  
SC2602  
C2  
0.1  
_ 5V  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
VCC  
GND  
SS/SHDN  
COMP  
SENSE  
BSTH  
PWRGD  
OVP  
C3  
0.1  
SHDN  
PWRGD  
OVP  
820pF  
R3  
1k  
4.99K  
0.1  
R8  
124*  
OCSET  
PHASE  
DRVH  
PGND  
R7  
127  
+12V  
C4  
1.0  
D1  
MBR0520  
Q1  
L1  
STP40NE  
2uH  
BSTL  
+
R5  
3.9  
Q2  
STP40NE  
8
DRVL  
C9  
C10  
180/4V  
C11  
180/4V  
C12  
180/4V  
C13  
180/4V  
180/4V Vout=2.5V  
R6  
2.2  
*
_
NOTE:  
Figure 1.  
*) Vout = 1.265 x (1+R8/R7)  
1
www.semtech.com  
Revision 6, June 2003  

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