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SC4609MLTRT PDF预览

SC4609MLTRT

更新时间： 2024-11-26 03:15:11
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信息通信管理
页数 文件大小 规格书
18页 329K
描述
Low Input, MHz Operation, High Efficiency Synchronous Buck

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中文翻译

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SC4609MLTRT 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：DFN
包装说明：HVQCCN, LCC12,.16SQ,32针数：12
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.84
Is Samacsys：N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：5.5 V最小输入电压：2.7 V
标称输入电压：3.3 VJESD-30 代码：S-PQCC-N12
JESD-609代码：e3长度：4 mm
湿度敏感等级：1功能数量：1
端子数量：12最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：1 A
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装等效代码：LCC12,.16SQ,32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）：260
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：PUSH-PULL最大切换频率：1000 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.8 mm端子位置：QUAD
处于峰值回流温度下的最长时间：40宽度：4 mm
Base Number Matches：1

SC4609MLTRT 数据手册

 浏览型号SC4609MLTRT的Datasheet PDF文件第2页浏览型号SC4609MLTRT的Datasheet PDF文件第3页浏览型号SC4609MLTRT的Datasheet PDF文件第4页浏览型号SC4609MLTRT的Datasheet PDF文件第5页浏览型号SC4609MLTRT的Datasheet PDF文件第6页浏览型号SC4609MLTRT的Datasheet PDF文件第7页 
SC4609  
Low Input, MHz Operation,  
High Efficiency Synchronous Buck  
POWER MANAGEMENT  
Description  
Features  
The SC4609 is a voltage mode step down (buck) regula-  
tor controller that provides accurate high efficiency power  
conversion from an input supply range of 2.7V to 5.5V. A  
high level of integration reduces external component  
count, and makes it suitable for low voltage applications  
where cost, size and efficiency are critical. The SC4609  
is capable of producing an output voltage as low as 0.5V.  
‹ Asynchronous start up  
‹ Programmable switching frequency up to 1MHz  
‹ BiCMOS voltage mode PWM controller  
‹ 2.7V to 5.5V input voltage range  
‹ Output voltage as low as 0.5V  
‹ +/-1% reference accuracy  
‹ Sleep mode (Icc = 10µA typ)  
‹ Adjustable lossless short circuit current limiting  
‹ Combination pulse by pulse & hiccup mode  
current limit  
‹ High efficiency synchronous switching  
‹ 1A peak current driver  
‹ External soft start  
‹ 12-pin MLP Lead-free package, fully WEEE and RoHS  
compliant  
The SC4609 drives external, N-channel MOSFETs with a  
peak gate current of 1A. A non-overlap protection is pro-  
vided for the gate drive signals to prevent shoot through  
of the MOSFET pair. The SC4609 features lossless cur-  
rent sensing of the voltage drop across the drain to  
source resistance of the high side MOSFET during its  
conduction period. Its switching frequency can be pro-  
grammed up to 1MHz.  
Applications  
‹ Distributed power architecture  
‹ Servers/workstations  
The quiescent supply current in sleep mode is typically  
lower than 10µA. A external soft start is provided to pre-  
vent output voltage overshoot during start-up.  
‹ Local microprocessor core power supplies  
‹ DSP and I/O power supplies  
‹ Battery-powered applications  
‹ Telecommunications equipment  
‹ Data processing applications  
The SC4609 is an ideal choice for converting 3.3V, 5V or  
other low input supply voltages. It’s available in 12 pin  
MLP package.  
Typical Application Circuit  
Vin=2.7V - 5.5V  
C10  
C13  
C14  
22u  
22u  
220u  
D2  
1u  
C17  
M11  
R13  
1
R3  
U1  
R6  
1
12  
1
11  
10  
9
BST  
DRVH  
L1  
C3  
4.7u  
Vout=1.5V (as low as 0.5V*) / 12A  
VCC  
PHASE  
DRVL  
PGND  
AGND  
SS  
1.8u  
R5  
2
ISET  
C9  
1
C6  
C5  
C4  
3
8
COMP  
FSET  
VSENSE  
M2  
4.7n  
C16  
560pF  
2.2n  
330u  
22u  
C2  
4
7
22u  
R7  
10k  
C1  
5
6
R8  
200  
180p  
Css  
22u  
R1  
SC4609  
14.3k  
R9  
*External components can be modified to provide a Vout as low as 0.5V  
4.99k  
Revision: February 8, 2006  
1
www.semtech.com  
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