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RT4823

Richtek

Wide Input and Ultra-Low Quiescent Current Boost Converter

RT4823 Wide Input and Ultra-Low Quiescent Current Boost Converter with High Efficiency General Description The RT4823 ...


RT4823

Richtek


Octopart Stock #: O-1518095

Findchips Stock #: 1518095-F

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Description
RT4823 Wide Input and Ultra-Low Quiescent Current Boost Converter with High Efficiency General Description 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 wh
More View en the battery voltage is lower than the required voltage for system power ICs. 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 1A, 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. The RT4823 is available in the WL-CSP-9B 1.3x1.2 (BSC) package. Applications ⚫ NFC Device Power Supply ⚫ USB Charging Ports ⚫ PC Accessory Application (Keyboard, Mouse...etc.) ⚫ TWS (True Wireless Stereo) Hall Sensor ⚫ Gaming Device Sensor Features ⚫ Ultra-Low Operating Quiescent Current ⚫ Quickly Start-Up Time (< 400sec) ⚫ 3 Few External Components : 1H Inductor, 0402 Case Size Input and 0603 Case Size Output Case Size Capacitors ⚫ Input Voltage Range : 1.8V to 5.5V ⚫ Support VIN > VOUT Operation ⚫ Default Boost Output Voltage Setting : VOUT = 5V ⚫ Maximum Continuous Load Current : 1.3A at VIN > 3.6V Boosting VOUT to 5V ⚫ 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 ⚫ Cycle-by-Cycle Current Limit ⚫ Over-Voltage Protection ⚫ Short-Circuit Protection ⚫ Over-Temperature Protection ⚫ Small WL-CSP-9B 1.3x1.2 (BSC) Package Simplified Application Circuit RT4823 L SW VOUT VOUT COUT VIN VIN CIN EN BP GND Copyright © 2022 Richtek Technology Corporation. All rights reserved. DS4823-01 September 2022 is a registered trademark of Richtek Technology Corporation. www.richtek.com 1 RT4823 Ordering Information RT4823 Package Type WSC : WL-CSP-9B 1.3x1.2 (BSC) Pin Configuration (TOP VIEW) VOUT Note : Richtek products are :  RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.  Suitable for use in SnPb or Pb-free soldering processes. VOUT A1 A2 A3 VIN SW B1 GND C1 B2 B3 EN SW C2 C3 BP GND Marking Information 8BW 8B : Product Code W : Date Code WL-CSP-9B 1.3x1.2 (BSC) Functional Pin Description Pin No. Pin Name Pin Function A1, A2 VOUT Output voltage. Place COUT as close as possible to the device. A3 VIN Input voltage. This pin has to connect to input power to supply chip internal power. B1, B2 SW Switching node. The power induc






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