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SC2620SETRT PDF预览

SC2620SETRT

更新时间: 2024-02-13 15:01:05
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
26页 587K
描述
Dual 2A, 30V Step-down Regulator with Programmable Frequency up to 1.4MHz

SC2620SETRT 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SOP, SOP16,.25
针数:16Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.8Is Samacsys:N
模拟集成电路 - 其他类型:DUAL SWITCHING CONTROLLER控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:30 V
最小输入电压:2.8 V标称输入电压:5 V
JESD-30 代码:R-PDSO-G16JESD-609代码:e3
长度:9.9 mm功能数量:1
端子数量:16最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:3.2 A
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP16,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
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:BUCK最大切换频率:1600 kHz
温度等级:INDUSTRIAL端子面层:MATTE TIN
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

SC2620SETRT 数据手册

 浏览型号SC2620SETRT的Datasheet PDF文件第2页浏览型号SC2620SETRT的Datasheet PDF文件第3页浏览型号SC2620SETRT的Datasheet PDF文件第4页浏览型号SC2620SETRT的Datasheet PDF文件第5页浏览型号SC2620SETRT的Datasheet PDF文件第6页浏览型号SC2620SETRT的Datasheet PDF文件第7页 
SC2620  
Dual 2A, 30V Step-down Regulator with  
Programmable Frequency up to 1.4MHz  
POWER MANAGEMENT  
Description  
Features  
The SC2620 is a constant frequency dual current-mode ‹ Wide Input Voltage Range 2.8V to 30V  
switching regulator with integrated 2.3A, 30V switches.  
Its switching frequency can be programmed up to 1.4MHz  
per channel. Due to the SC2620’s high frequency  
operation, small inductors and ceramic capacitors can be  
used, resulting in very compact power supplies. The two  
channels of the SC2620 operate at 180° out of phase for  
reduced input voltage ripples.  
‹ Up to 1.4MHz/Channel Programmable Switching  
Frequency  
‹ Current-mode Control  
‹ Out of Phase Switching Reduces Ripple  
‹ Cycle-by-cycle Current-limiting  
‹ Independent Shutdown/soft-start Pins  
‹ Independent Hiccup Overload Protection  
‹ Channel 1 Power Good Indicator  
‹ Two 2.3A Integrated Switches  
‹ Thermal Shutdown  
Separate soft start/enable pins allow independent control  
of each channel. Channel 1 power good indicator can be  
used for output start up sequencing to prevent latch-up.  
‹ Thermally Enhanced SO-16 Lead Free Package  
Current-mode PWM control achieves fast transient ‹ Fully WEEE and RoHS Compliant  
response with simple loop compensation. Cycle-by-cycle  
current limiting and hiccup overload protection reduce  
power dissipation during overload.  
Applications  
‹ XDSL and Cable Modems  
‹ Set-top Boxes  
‹ Point of Load Applications  
‹ CPE Equipment  
‹ DSP Power Supplies  
Typical Application Circuit  
C5  
R5  
12.7k  
D3  
C6  
1.5nF  
FB1  
COMP1 BOOST1  
V
= 12V  
IN  
C H 1  
C7  
C2  
1N4148  
47pF  
0.1µF  
SS1  
L1  
10µH  
OUT1  
SW1  
ROSC  
22nF  
R9  
46.4k  
3.3V/2A  
R1  
9V-16V VIN  
C15  
D1  
30.1k  
UPS120  
SC2620  
C H 2  
C H 3  
C1  
µ
22  
F
PGOOD1  
PVIN  
R2  
13k  
µ
10  
F
R10  
10  
C10  
SS2  
VIN  
22nF  
D2  
C16  
0.1µF  
C9  
UPS120  
COMP2  
FB2  
L2  
OUT2  
C8  
33pF  
SW2  
R7  
6.8µH  
1.2V/2A  
R3  
D4  
1N4148  
C4  
10.5k  
4.7nF  
2.61k  
µ
0.1  
F
C3  
22  
BOOST2  
GND  
µ
F
4ms/div  
R4  
13k  
CH1 : OUT1 Voltage, 2V/div  
CH2 : OUT2 Voltage, 1V/div  
CH3 : SS2 Voltage, 2V/div  
L1 & L2: Coiltr onics DR73  
C1 & C3: Murata GRM21BR60J226M  
C15: Murata GRM32DR61E106K  
Figure 1(a). 550kHz 9V-16V VIN to 3.3V and 1.2V Step-  
down Converter.  
Figure 1(b). VIN Start-up Transient (IOUT1= 1.5A, IOUT2=  
0.8A). Channel 2 start is delayed until  
Channel 1 reaches regulation.  
Revision: December 20th, 2006  
1
www.semtech.com  

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