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SC195BCSTRT

更新时间： 2024-10-02 01:11:51
品牌 Logo 应用领域
商升特 - SEMTECH 开关
页数 文件大小 规格书
19页 614K
描述
3.5MHz, 500mA Synchronous Step Down DC-DC Regulator

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中文翻译

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SC195BCSTRT 技术参数

是否Rohs认证： 符合生命周期：Active
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.75
模拟集成电路 - 其他类型：SWITCHING REGULATOR峰值回流温度（摄氏度）：NOT SPECIFIED
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

SC195BCSTRT 数据手册

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SC195B  
3.5MHz, 500mA Synchronous  
Step Down DC-DC Regulator  
POWER MANAGEMENT  
Features  
Description  
Input Voltage — 2.9V to 5.5V  
The SCꢀ95B is a high efficiency, 500mA step down regula-  
tor designed to operate with an input voltage range of  
2.9V to 5.5V. The input voltage range makes it ideal for  
battery operated applications with space limitations. The  
SCꢀ95B also includes fifteen programmable output  
voltage settings that can be selected using the four  
control pins, eliminating the need for external feedback  
resistors. The output voltage can be fixed to a single  
setting or dynamically switched between different levels.  
Pulling all four control pins low disables the output and  
puts the device into a low current shutdown state.  
Output Voltage — 0.8V to 3.6V  
Output current capability — 500mA  
Efficiency up to 94%  
ꢀ5 Programmable output voltages  
High light-load efficiency via automatic PSAVE mode  
Fast transient response  
Temperature range — -40 to +85°C  
Oscillator frequency — 3.5MHz  
ꢀ00% duty cycle capability  
Quiescent current — 38µA typ  
Shutdown Current — 0.ꢀµA typ  
Internal soft-start  
The SCꢀ95B operates at a fixed 3.5MHz switching fre-  
quency in normal PWM (Pulse-Width Modulation) mode.  
A variable frequency PSAVE (power-save) mode is used to  
optimize efficiency at light loads for each output setting.  
Built-in hysteresis prevents chattering between the two  
modes.  
Over-voltage protection  
Current limit and short circuit protection  
Over-temperature protection  
Under-voltage lockout  
Floating control pin protection  
WLCSP8-0.80 X 0.80 X 0.375 (mm) package  
Pb free, halogen free, and RoHS/WEEE compliant  
The SCꢀ95B provides several protection features to safe-  
guard the device under stressed conditions. These  
include short circuit protection, over-temperature protec-  
tion, over-voltage protection, under-voltage lockout, and  
soft-start to control in-rush current. These features  
coupled with the small 8-bump 0.80 X 0.80 X 0.375 (mm)  
package make it a versatile device ideal for step-down  
regulation in products needing high efficiency and a  
small PCB footprint.  
Applications  
Smart phones and cellular phones  
MP3/Personal media players  
Personal navigation devices  
Digital cameras  
Single Li-ion cell or 3 NiMH/NiCd cell devices  
Devices with 3.3V or 5V internal power rails  
Typical Application Circuit  
L1  
1µH  
SC195B  
VIN  
VOUT  
0.8V to 3.6V  
2.9V to 5.5V  
VIN  
LX  
CIN  
4.7µF  
COUT  
10µF  
CTL3  
CTL2  
CTL1  
CTL0  
O UT  
G ND  
Control Logic  
(May also be  
hard wired to  
VIN/ GND)  
Rev 2.ꢀ  
ꢀ
Semtech Corporation  
1234567...19

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