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SC2677TSTRT PDF预览

SC2677TSTRT

更新时间: 2024-09-13 22:50:19
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
页数 文件大小 规格书
9页 163K
描述
Dual Synchronous Voltage Mode Controller with Current Sharing Circuitry

SC2677TSTRT 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Active零件包装代码:TSSOP
包装说明:TSSOP, TSSOP20,.25针数:20
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.2
Is Samacsys:N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:15 V最小输入电压:4.5 V
标称输入电压:5 VJESD-30 代码:R-PDSO-G20
JESD-609代码:e3长度:6.5 mm
功能数量:1端子数量:20
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP20,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):NOT SPECIFIED
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:PUSH-PULL最大切换频率:1000 kHz
温度等级:COMMERCIAL端子面层:MATTE TIN
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:4.4 mmBase Number Matches:1

SC2677TSTRT 数据手册

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SC2677  
Dual Synchronous Voltage Mode  
Controller with Current Sharing Circuitry  
POWER MANAGEMENT  
Features  
Description  
The SC2677 is a versatile 2 phase, synchronous, volt-  
age mode PWM controller that may be used in two dis-  
tinct ways. First, the SC2677 is ideal for applications  
where point of use output power exceeds any single in-  
put power budget. Alternatively, the SC2677 can be used  
as a dual switcher. The SC2677 features a temperature  
compensated voltage reference, an under voltage lock-  
out over current protection and internal level-shifted, high-  
side drive circuitry.  
‹ 300kHz to 1MHz externally programmable  
frequency operation  
‹ Soft Start and Enable function  
‹ Power Good output provided  
‹ Under voltage short circuit protection  
‹ Phase-shifted switchers minimize ripple  
‹ High efficiency operation, >90%  
‹ Programmable output(s) as low as 0.5V  
‹ Industrial temperature range  
‹ TSSOP-20 package  
In current sharing configuration, the SC2677 can pro-  
duce a single output voltage from two separate voltage  
sources (which can be different voltage levels) while  
maintaining current sharing between the channels. Cur-  
rent sharing is programmable to allow loading each input  
supply as required by the application.  
‹ Bias voltage as low as 4.5V  
‹ Adjustable phase shift between channels  
Two Phase, Current Sharing Controller  
‹ Flexible, same or separate VIN  
‹ Programmable current sharing  
‹ Thermal distribution via multi-phase output  
In dual switcher configuration, two feedback paths are  
provided for independent control of the separate outputs.  
The device will provide a regulated output from flexibly  
configured inputs (3.3V, 5V, 12V), provided 5V is present  
for VCC. The phasing between the two switchers is ad-  
justable to minimize the input and output ripple.  
Applications  
‹ Graphics cards  
‹ Peripheral add-in card  
‹ Dual-Phase power supply  
‹ Power supplies requiring two outputs  
Simplified Application Schematic  
+5V  
L1  
Vout1  
M1  
1
2
C1  
M2  
C2  
+12V  
C3  
1uF  
PWRGD  
R2  
ENABLE  
R1  
R3  
C5  
R4  
C4  
R5  
R6  
U1  
SC2677  
R7  
0R0  
C6  
R8  
C7  
R9  
R11  
R10  
C8  
+12V  
M3  
+3.3V  
L2  
Vout2  
1
2
C9  
M4  
C10  
Revision: NOV. 15, 2004  
1
www.semtech.com  

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