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SC427

更新时间： 2024-01-13 22:18:33
品牌 Logo 应用领域
商升特 - SEMTECH 稳压器
页数 文件大小 规格书
29页 547K
描述
10A Integrated FET Regulator with Programmable LDO

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中文翻译

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SC427 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：MLPQ-32
针数：32Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.72Is Samacsys：N
其他特性：OUTPUT VOLTAGE IS ADJUSTABLE FROM 0.5V TO 5.5V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：28 V最小输入电压：3 V
标称输入电压：12 VJESD-30 代码：S-XXMA-N32
长度：5 mm功能数量：1
端子数量：32最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：10 A
标称输出电压：5 V封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装等效代码：LCC32,.2SQ,20
封装形状：SQUARE封装形式：MICROELECTRONIC ASSEMBLY
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1 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：1000 kHz温度等级：AUTOMOTIVE
端子形式：NO LEAD端子节距：0.5 mm
端子位置：UNSPECIFIED处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：5 mmBase Number Matches：1

SC427 数据手册

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SC417/SC427  
10A Integrated FET Regulator  
with Programmable LDO  
POWER MANAGEMENT  
Features  
Description  
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Input voltage — 3V to 28V  
Internal power MOSFETs — 10A  
Integrated bootstrap switch  
Smart power-save protection  
The SC417/SC427 is a stand-alone synchronous buck  
power supply. It features integrated power MOSFETs, a  
bootstrap switch, and a programmable LDO in a space-  
saving MLPQ-5x5mm 32-pin package. The device is highly  
efficient and uses minimal PCB area. It uses pseudo-fixed  
frequency adaptive on-time operation to provide fast  
transient response.  
Configurable 150mA LDO with bypass capability  
TC compensated RDS(ON) sensed current limit  
Pseudo-fixed frequency adaptive on-time control  
Designed for use with ceramic capacitors  
Programmable VIN UVLO threshold  
Independent enable for switcher and LDO  
Selectable ultra-sonic power-save (SC417)  
Selectable power-save (SC427)  
Internal soft-start and soft-shutdown at output  
Internal reference — 1% tolerance  
Over-voltage/under-voltage fault protection  
Power good output  
The SC417/SC427 supports using standard capacitor types  
such as electrolytic or special polymer in addition to  
ceramic, at switching frequencies up to 1MHz. The pro-  
grammable frequency, synchronous operation, and select-  
able power-save provide high efficiency operation over a  
wide load range.  
The LDO output is programmable from 0.75V to 5.25V  
using external resistors. The bias voltage for the device  
can be supplied by the on-chip LDO when VIN > 4.5V, or by  
an external 5V supply. When a separate source is used as  
the bias supply, the LDO can be programmed to provide a  
different voltage.  
Lead-free 5x5mm, 32 Pin MLPQ package  
Fully WEEE and RoHS compliant  
Applications  
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Notebook, desktop, tablet, and server computers  
Networking and telecommunication equipment  
Printers, DSL, and STB applications  
Embedded applications  
Power supply modules  
Point of load power supplies  
Additional features include cycle-by-cycle current limit,  
soft-start, under and over-voltage protection, program-  
mable over-current protection, soft shutdown, and select-  
able 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.  
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.  
© 2008 Semtech Corporation  
November 11, 2008  
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中文翻译

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