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SC418EVB

更新时间： 2024-02-03 09:27:35
品牌 Logo 应用领域
商升特 - SEMTECH 控制器
页数 文件大小 规格书
30页 626K
描述
EcoSpeedTM DC-DC Buck Controller with Programmable LDO

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中文翻译

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SC418EVB 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：QFN包装说明：3 X 3 MM, HALOGEN FREE AND ROHS COMPLIANT, MLPQ-20
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：1.73Is Samacsys：N
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 0.75V TO 5.25V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：28 V最小输入电压：3 V
标称输入电压：12 VJESD-30 代码：S-XQCC-N20
JESD-609代码：e3长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：20最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：0.2 A
封装主体材料：UNSPECIFIED封装代码：HVQCCN
封装等效代码：LCC20,.11SQ,16封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：0.6 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：AUTOMOTIVE端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.4 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3 mmBase Number Matches：1

SC418EVB 数据手册

 浏览型号SC418EVB的Datasheet PDF文件第2页浏览型号SC418EVB的Datasheet PDF文件第3页浏览型号SC418EVB的Datasheet PDF文件第4页浏览型号SC418EVB的Datasheet PDF文件第5页浏览型号SC418EVB的Datasheet PDF文件第6页浏览型号SC418EVB的Datasheet PDF文件第7页 
SC418  
EcoSpeedTM DC-DC Buck Controller  
with Programmable LDO  
POWER MANAGEMENT  
Features  
Description  
Power system  
The SC418 is a synchronous EcoSpeedTM buck regulator  
which incorporates Semtech’s advanced, patented adap-  
tive on-time control architecture to provide excellent  
light-load efficiency and fast transient response. It fea-  
tures an integrated bootstrap switch and programmable  
LDO in a 3 x 3mm package. The device is highly efficient  
and uses minimal PCB area.  
• Input voltage — 3V to 28V  
• Integrated bootstrap switch  
• Programmable LDO output — 200mA  
• 1% reference tolerance -40 to +85 °C  
• Selectable internal/external bias power supply  
• EcoSpeedTM architecture with pseudo-fixed fre-  
quency adaptive on-time control  
Logic input/output control  
The SC418 supports using standard capacitor types such  
as electrolytic or special polymer, in addition to ceramic, at  
switching frequencies up to 1MHz. The programmable  
frequency, synchronous operation, and programmable  
power-save provide high efficiency operation over a wide  
load range.  
• Independent control EN for LDO and switcher  
• Programmable VIN UVLO threshold  
• Power good output  
• Selectable power save mode  
• Programmable ultrasonic power save mode  
Protections  
Additional features include cycle-by-cycle current limit,  
soft-start, under and over-voltage protection, program-  
mable over-current protection, soft shutdown, selectable  
power-save modes, and programmable ultrasonic power-  
save. The device also provides separate enable inputs for  
the PWM controller and LDO as well as a power good  
output for the PWM controller.  
• Over-voltage/under-voltage  
• TC compensated RDS(ON) sensed current limit  
• Thermal shutdown  
• Smart power save  
Output capacitor types  
• High ESR — SP, POSCAP, OSCON  
• Ceramic capacitors  
Package — 3 x 3mm, 20-pin MLPQ  
Lead-free and halogen free  
The input voltage can range from 3V to 28V. The wide  
input voltage range, programmable frequency, and pro-  
grammable LDO make the device extremely flexible and  
easy to use in a broad range of applications. Support is  
provided for single cell or multi-cell battery systems in  
addition to traditional DC power supply applications.  
RoHS and WEEE compliant  
Applications  
Office automation and computing  
Networking and telecommunication equipment  
Point-of-load power supplies and module replacement  
Typical Application Circuit  
VEXT or VLDO  
VIN  
VIN  
PGOOD  
PGOOD  
ENABLE  
CIN  
EN  
DH  
LX  
ENL  
ENABLE LDO  
RTON  
VOUT  
L1  
TON  
VDDA  
VDDP  
+
COUT  
BST  
ILIM  
SC418  
VEXT or VLDO  
0.1µF  
RILIM  
1µF  
DL  
VLDO  
FBL  
VOUT  
VLDO  
1µF  
FB  
PSV  
AGND  
PGND  
PSV  
© 2010 Semtech Corporation  
July 27, 2010  
1
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中文翻译

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