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RT4823

更新时间： 2024-10-03 17:01:27
品牌 Logo 应用领域
立锜 - RICHTEK /
页数 文件大小 规格书
20页 725K
描述
Wide Input and Ultra-Low Quiescent Current Boost Converter with High Efficiency

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RT4823  
Wide Input and Ultra-Low Quiescent Current Boost Converter  
with High Efficiency  
Features  
General Description  
⚫ Ultra-Low Operating Quiescent Current  
⚫ Quickly Start-Up Time (< 400sec)  
⚫ 3 Few External Components : 1H Inductor, 0402  
Case Size Input and 0603 Case Size Output Case  
Size Capacitors  
The RT4823 integrates built-in power transistors,  
synchronous rectification, and low supply current to  
provide a compact solution for systems using advanced  
Li-Ion battery chemistries. The RT4823 is capable of  
supplying significant energy when the battery voltage is  
lower than the required voltage for system power ICs.  
⚫ Input Voltage Range : 1.8V to 5.5V  
⚫ Support V > V  
Operation  
IN  
OUT  
The RT4823 is a boost regulator designed to provide a  
minimum output voltage from a single-cell Li-Ion battery,  
even when the battery voltage is below system  
minimum. In boost mode, output voltage regulation is  
guaranteed to a maximum load current of 1500mA.  
Quiescent current in shutdown mode is less than 1A,  
which maximizes the battery life. The regulator  
transitions smoothly between bypass and normal boost  
mode. The device can be forced into bypass mode to  
reduce quiescent current.  
⚫ Default Boost Output Voltage Setting :  
= 5V  
V
OUT  
⚫ Maximum Continuous Load Current : 1.3A at  
> 3.6V Boosting V to 5V  
V
IN  
OUT  
⚫ Up to 93% Efficiency  
⚫ EN(H) : Boost Mode  
⚫ EN(L), BP(H) : Bypass Mode  
⚫ EN(L), BP(L) : Shutdown Mode  
⚫ Internal Synchronous Rectifier  
⚫ Over-Current Protection  
The RT4823 is available in the WL-CSP-9B 1.3x1.2  
(BSC) package.  
⚫ Cycle-by-Cycle Current Limit  
⚫ Over-Voltage Protection  
⚫ Short-Circuit Protection  
Applications  
⚫ NFC Device Power Supply  
⚫ Over-Temperature Protection  
⚫ Small WL-CSP-9B 1.3x1.2 (BSC) Package  
⚫ USB Charging Ports  
⚫ PC Accessory Application (Keyboard, Mouse...etc.)  
⚫ TWS (True Wireless Stereo) Hall Sensor  
⚫ Gaming Device Sensor  
Simplified Application Circuit  
RT4823  
L
SW  
VOUT  
V
OUT  
C
OUT  
V
IN  
VIN  
C
IN  
EN  
BP  
GND  
Copyright © 2022 Richtek Technology Corporation. All rights reserved.  
is a registered trademark of Richtek Technology Corporation.  
DS4823-01  
September 2022  
www.richtek.com  
1
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 		Wide Input and Ultra-Low Quiescent Current Boost Converter with High Efficiency
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RT4N631C ISAHAYA

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RT4S ETC

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RT4S4LC4 TE

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 		Relay package consisting of RT relay, DIN-rail socket, plastic

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