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SC493ULTRT

更新时间： 2024-01-17 12:45:37
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
页数 文件大小 规格书
28页 531K
描述
EcoSpeedTM Step-down Controller with I2C Interface

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SC493ULTRT 技术参数

是否Rohs认证：符合生命周期：Obsolete
零件包装代码：QFN包装说明：3 X 3 MM, 0.60 MM HEIGHT, 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：5.8Is Samacsys：N
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 0.5 TO 5V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：5 VJESD-30 代码：S-XQCC-N20
长度：3 mm功能数量：1
端子数量：20最高工作温度：85 °C
最低工作温度：-40 °C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：INDUSTRIAL
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

SC493ULTRT 数据手册

 浏览型号SC493ULTRT的Datasheet PDF文件第2页浏览型号SC493ULTRT的Datasheet PDF文件第3页浏览型号SC493ULTRT的Datasheet PDF文件第4页浏览型号SC493ULTRT的Datasheet PDF文件第5页浏览型号SC493ULTRT的Datasheet PDF文件第6页浏览型号SC493ULTRT的Datasheet PDF文件第7页 
SC493  
EcoSpeedTM Step-down Controller  
with I2C Interface  
POWER MANAGEMENT  
Features  
Description  
Input supply voltage range — 3.0V to 28V  
Controller supply voltage range — 3.0V to 5.5V  
All ceramic solution enabled  
The SC493 is a synchronous EcoSpeedTM buck power supply  
controller. It features an I2C interface and a bootstrap switch in  
a space-saving MLPQ 3X3-20 pin package. The SC493 uses  
Semtech’s advanced patented adaptive on-time control archi-  
tecture to provide excellent light load efficiency and fast tran-  
sient response with small external components.  
I2C interface  
Output voltage fine adjust control  
Output voltage margining  
Supports dynamic voltage transitions via the I2C  
interface  
The I2C interface is used to program the output voltage  
offset, the power-on delay time, the soft-start time, the  
power save operating mode, and it can enable/disable the  
controller. Additionally, a status register provides informa-  
tion on device state and faults.  
Programmable power-on delay time and soft-start time  
EcoSpeedTM architecture with pseudo fixed-frequency  
adaptive on-time control  
Switching frequency programmable up to 1MHz  
Selectable power save, including ultrasonic  
Non-synchronous start-up into pre-biased loads  
Over-voltage/under-voltage fault protection  
Smart power save  
The controller is capable of operating with all ceramic solu-  
tions and switching frequencies up to 1MHz. The program-  
mable frequency and selectable power save mode offer the  
flexibility to optimize the controller for high efficiency and  
small size.The power save mode can be enabled to maximize  
efficiency over the entire load range (PSAVE), or switched to  
ultrasonic mode to set the minimum frequency to the desired  
value (UPSAVE). Power save mode can be disabled for opera-  
tion in continuous conduction mode at all loads.  
Power good Output  
Smart driveTM  
Status register monitoring device operation  
Ultra-thin package — 3 x 3 x 0.6 (mm), 20 pin MLPQ-UT  
Lead-free and halogen-free  
WEEE and RoHS compliant  
Additional features include output voltage margining,  
cycle-by-cycle current limit, output voltage soft-start, over  
and under-voltage protection, controller over-tempera-  
ture protection, and output voltage soft-shutdown when  
disabled. The SC493 also provides a power good output.  
Applications  
Printers  
Computer peripherals  
Typical Application Circuit  
VIN  
VDD  
Q1  
CIN  
R1  
R2 R3  
RILIM  
CBST  
BST  
LX  
EN  
EN  
L
VOUT  
PGD  
SCL  
PGD  
SCL  
SC493  
SDA  
SDA  
A0  
R4  
R5  
COUT  
Q2  
DL  
A1  
A2  
US Patent: 7,714,547 B2  
1
June 10, 2010  
© 2010 Semtech Corporation  
1234567...28

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