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RT9161B-4BCX from RichTek

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RT9161B-4BCX

Manufacturer: RichTek

Simple Lithium-Ion Battery Charger

Partnumber Manufacturer Quantity Availability
RT9161B-4BCX,RT9161B4BCX RichTek 716 In Stock

Description and Introduction

Simple Lithium-Ion Battery Charger **Introducing the RT9161B-4BCX: A High-Performance LDO Voltage Regulator for Precision Applications**  

In today’s fast-evolving electronics landscape, reliable power management is critical for ensuring stable performance in sensitive circuits. The **RT9161B-4BCX** from Richtek stands out as a high-performance, low-dropout (LDO) voltage regulator designed to meet the stringent demands of modern applications.  

Engineered for precision, the RT9161B-4BCX delivers a fixed **4.0V output** with an ultra-low dropout voltage of just **300mV at 300mA load current**, making it ideal for battery-powered devices where efficiency is paramount. Its low quiescent current of **75µA (typical)** further enhances energy efficiency, extending operational life in portable electronics such as wearables, IoT sensors, and handheld medical devices.  

Stability is a hallmark of this regulator, thanks to its ability to operate with small ceramic capacitors (as low as **1µF**), reducing board space and BOM costs. With a high **Power Supply Rejection Ratio (PSRR)** of **65dB at 1kHz**, the RT9161B-4BCX effectively minimizes noise, ensuring clean power delivery to sensitive analog and digital components.  

Additional features include built-in **overcurrent protection (OCP)** and **thermal shutdown**, safeguarding the device and downstream circuitry from potential damage. Its compact **SOT-23-5 package** makes it suitable for space-constrained designs without compromising performance.  

Whether used in consumer electronics, industrial control systems, or automotive peripherals, the RT9161B-4BCX combines efficiency, reliability, and compactness—making it a top choice for engineers seeking a robust power solution.  

For designers prioritizing precision, efficiency, and stability, the RT9161B-4BCX is a compelling option that delivers consistent performance across a wide range of applications.

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