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RT6214A PDF预览

RT6214A

更新时间： 2024-11-25 20:41:27
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立锜 - RICHTEK /
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24页 1529K
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RT6214A 技术参数

Status：ActiveVin (min)(V)：4.5
Vin (max)(V)：18Number of Outputs：1
Vout (min)(V)：0.765;0.8Vout (max)(V)：6.5
Preset Vout(V)：Output Adj. Method：Resistor
Iout (max)(A)：3Current Limit (typ)(A)：4.5
Freq (typ)(kHz)：500;650Freq (min)(kHz)：
Freq (max)(kHz)：Ext Sync：No
Ron_HS (typ)(mOhm)：100Ron_LS (typ)(mOhm)：50
Iq (typ)(mA)：0.5Features：ACOT Control;OCP;PSM;UVP
Package Type：TSOT-26(FC);TSOT-28(FC)

RT6214A 数据手册

 浏览型号RT6214A的Datasheet PDF文件第2页浏览型号RT6214A的Datasheet PDF文件第3页浏览型号RT6214A的Datasheet PDF文件第4页浏览型号RT6214A的Datasheet PDF文件第5页浏览型号RT6214A的Datasheet PDF文件第6页浏览型号RT6214A的Datasheet PDF文件第7页 
RT6214A/B  
18V Input, 3A, ACOTTM Buck Converter in 6 and 8 Pin  
TSOT-23 with Both FETs OC Protection  
General Description  
Features  
Input Supply Voltage Range : 4.5V to 18V  
3A Converter with Built-In 100m/50mLow  
RDS(ON) Power FETs  
Advanced Constant On-Time (ACOTTM) Control  
for Ultrafast Transient Response  
Fixed Switching Frequency : 500kHz (SOT23-6)  
or 650kHz (SOT23-8)  
The RT6214A/B is  
a
simple, easy-to-use, 3A  
synchronous step-down DC-DC converter with an input  
supply voltage range of 4.5V to 18V. The device  
integrates low RDS(ON) power MOSFETs to achieve  
high efficiency in a SOT-23 package and build-in  
accurate reference voltage (0.765V or 0.8V by product  
options).  
Optional for Operation Modes :  
The RT6214A/B adopts Advanced Constant On-Time  
(ACOTTM) control architecture to provide an ultrafast  
transient response with few external components and  
to operate in nearly constant switching frequency over  
the line, load, and output voltage range. The RT6214A  
operates in automatic PSM that maintains high  
efficiency during light load operation. RT6214B  
operates in Forced PWM that helps meet tight voltage  
regulation accuracy requirements.  
Automatically Power Saving Mode (PSM)  
(RT6214A)  
Forced PWM Mode (RT6214B)  
Optimized for Low-ESR Ceramic Output  
Capacitors  
1.5% High-Accuracy Feedback Reference  
Voltage  
Output Voltage Range : up to 6.5V  
Internal fixed Soft-Start (typ. 1ms) for SOT-23-6  
Externally Adjustable Soft-Start for SOT-23-8  
Monotonic Start-Up for Pre-biased Outputs  
Both HS/LS FETs Protection for Robust Over  
Current Protection  
The RT6214A/B senses both FETs current for a robust  
over-current  
protection. The  
device features  
cycle-by-cycle current limit protection and prevent the  
device from the catastrophic damage in output short  
circuit, over current or inductor saturation. The  
RT6214A/B SOT-23-6 series built-in soft-start function  
prevents inrush current during start-up and the  
SOT-23-8 series offers programmable start-up by  
connecting a capacitor at external SS pin. The device  
also includes input under-voltage lockout, output  
under-voltage protection, and over-temperature  
protection (thermal shutdown) to provide safe and  
smooth operation in all operating conditions. The  
RT6214A/B are offered in TSOT-23-6 (FC) and  
TSOT-23-8 (FC) package.  
Input Under-Voltage Lockout (UVLO)  
Output Under-Voltage Protection (UVP) with  
Hiccup Mode  
Over-Temperature Protection (OTP) (Thermal  
Shutdown)  
Enable Control  
Power Good Indication for SOT-23-8  
RoHS Compliant and Halogen Free  
Available in TSOT-23-6 or TSOT-23-8 Package  
Copyright © 2018 Richtek Technology Corporation. All rights reserved.  
is a registered trademark of Richtek Technology Corporation.  
DS6214A/B-09 August 2018  
www.richtek.com  
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