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SC189CSKTRT PDF预览

SC189CSKTRT

更新时间: 2024-10-01 06:10:15
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
23页 1466K
描述
2.5MHz, 1.5A Synchronous Step Down Regulator

SC189CSKTRT 技术参数

是否Rohs认证: 符合生命周期:Active
零件包装代码:SOT-23包装说明:LSSOP, TSOP5/6,.11,37
针数:5Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:8 weeks风险等级:1.63
模拟集成电路 - 其他类型:SWITCHING REGULATOR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:2.9 V标称输入电压:5 V
JESD-30 代码:R-PDSO-G5长度:2.95 mm
功能数量:1端子数量:5
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:1.5 A标称输出电压:1.2 V
封装主体材料:PLASTIC/EPOXY封装代码:LSSOP
封装等效代码:TSOP5/6,.11,37封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.45 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:3000 kHz
温度等级:INDUSTRIAL端子形式:GULL WING
端子节距:0.95 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:1.6 mm
Base Number Matches:1

SC189CSKTRT 数据手册

 浏览型号SC189CSKTRT的Datasheet PDF文件第2页浏览型号SC189CSKTRT的Datasheet PDF文件第3页浏览型号SC189CSKTRT的Datasheet PDF文件第4页浏览型号SC189CSKTRT的Datasheet PDF文件第5页浏览型号SC189CSKTRT的Datasheet PDF文件第6页浏览型号SC189CSKTRT的Datasheet PDF文件第7页 
SC189  
2.5MHz, 1.5A Synchronous  
Step Down Regulator  
POWER MANAGEMENT  
Features  
Description  
VIN Range: 2.9 – 5.5V  
The SC189 is a high efficiency, synchronous step-down  
regulator providing up to 1.5A output current in either  
an ultra-small 2mm x 2mm, low profile package or a low  
cost SOT23-5 package. The device requires only three  
external filter components for a complete step down  
regulator solution. The input voltage range is 2.9 to 5.5V  
with either factory programmed outputs from 1.0 to 3.3V  
or adjustable output via an external resistor divider.  
VOUT Options: 1.0 - 3.3V  
Up to 1.5A Output Current  
Ultra-Small Footprint, <1mm Height Solution  
2.5MHz Switching Frequency  
Efficiency Up to 93%  
Low Output Noise Across Load Range  
Excellent Transient Response  
The converter operates at fixed 2.5MHz switching  
frequency allowing small L/C filtering components.  
The voltage mode architecture is compatible with chip  
inductors and capacitors for minimum PCB footprint and  
lowest overall system cost. Total footprint of 25mm2 can  
be achieved - making the SC189 the ideal solution for  
high density systems. Solution height of <1mm is also  
possible.  
Start Up into Pre-Bias Output  
100% Duty-Cycle Low Dropout Operation  
<1µA Shutdown Current  
Internal Soft Start  
Input Under-Voltage Lockout  
Output Over-Voltage, Current Limit Protection  
Over-Temperature Protection  
Adjustable Output Voltage  
Up to 93% efficiency is achieved with low RDS(ON) internal  
switches. PWM constant frequency operation ensures  
low output ripple across the load range. 100% duty-cycle  
provides 360mV dropout voltage at 1.5A which extends  
the minimum input voltage for 2.5V and 3.3V outputs.  
Excellent transient response is achieved with no external  
compensation components.  
Available in SOT23-5 package and 2mm x 2mm x  
0.6mm thermally enhanced MLPD-UT6 package  
-40 to +85°C Temperature Range  
Fully WEEE and RoHS Compliant  
The SC189 provides input under-voltage, output over-  
voltage, output short circuit and over-temperature  
protection to safeguard the device and system under fault  
conditions. The regulator provides integrated soft-start to  
minimize inrush currents. Standby quiescient current is  
less than 1µA.  
Applications  
Bluetooth Radios  
DSC and PMPs  
GPS Devices  
The SC189 is available in SOT23-5 and a thermally  
enhanced 2mm x 2mm x 0.6mm MLPD-UT6 package  
rated from -40 to +85°C.  
xDSL Systems  
POL Regulators  
Portable HDD  
Wireless LAN  
Typical Application Circuit  
Total PCB Area ~25mm2  
L
1µH  
L
SC189C  
Chip  
VOUT  
1.20V/1.5A  
LX  
VIN  
EN  
VIN  
2.9V to 5.5V  
CIN  
COUT  
22µF  
VOUT  
10µF  
COUT  
0805  
SC189  
CIN  
0603  
GND  
Actual Size  
1
www.semtech.com  
June 01, 2009  

SC189CSKTRT 替代型号

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SC189ZSKTRT SEMTECH

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