RT9503AGQW

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	Timer
Fault Protection:	Over Voltage
Charge Current - Max:	1A
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	12V
Interface:	USB
Operating Temperature:	-20°C ~ 85°C (TA)
Package / Case:	16-WFQFN Exposed Pad
Supplier Device Package:	16-WQFN (3x3)

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Introduction

The RT9503AGQW is a highly integrated voltage regulator, specifically designed for automotive power management. It is an advanced device with a range of features and functions, including an integrated SmartCharge™ technology, which allows it to be used for automotive battery charging. This article will discuss the application field and working principle of the RT9503AGQW within the category of PMIC - Battery Chargers.

Application Field

The RT9503AGQW is a high-efficiency, low-noise voltage regulator, specially designed for automotive applications. It is capable of regulating multiple outputs of different outputs (33V, 45V, and 51V), with a total output current of up to 24A. This makes it ideal for powering a wide range of automotive applications, such as starter, instrumentation, headlights, rear lights, and other external peripheral devices. Additionally, its wide input voltage range (9V-18V), low dropout voltage (typically <100mV), and high efficiency (up to 96%) allows it to be used in highly demanding applications. Moreover, the RT9503AGQW also integrates a SmartCharge™ technology that allows it to be used for automotive battery charging. The device is capable of monitoring and charging lithium-ion, lead-acid, and AGM batteries, as well as for regenerative braking. It also features programmable charge current, constant-voltage or constant-current charging, and precise voltage and current regulation, making it suitable for a variety of automotive battery charging applications.

Working Principle

The RT9503AGQW has an output voltage controlled by an external reference voltage. The output voltage is regulated by a pulse-width modulation (PWM) technique. The PWM frequency is set by an external capacitor, and a logic high on the EN/SET pin determines whether the output is in regulation mode (high) or standby mode (low). The device also features a low dropout voltage, temperature-compensated current and voltage regulation, and fast transient response characteristics. The RT9503AGQW also integrates a SmartCharge™ technology, which allows it to be used for automotive battery charging. The device is capable of monitoring and charging lithium-ion, lead-acid, and AGM batteries, as well as for regenerative braking. It also features programmable charge current, constant-voltage or constant-current charging, and precise voltage and current regulation. The charging process starts by regulating the voltage and setting the charge current to the specified setting. The device then monitors the battery voltage and temperature, to ensure that the charging process is safe and that the battery is not overcharged. The device is then able to detect end-of-charge conditions and stop the charging process automatically. It also features an accurate voltage and current regulation, to ensure that the battery is charged properly and efficiently.

Conclusion

The RT9503AGQW is a highly integrated voltage regulator, which is specifically designed for automotive applications. It is ideal for powering a wide range of automotive applications, while its integrated SmartCharge™ technology makes it suitable for automotive battery charging. The device is capable of monitoring and charging lithium-ion, lead-acid, and AGM batteries, as well as for regenerative braking. Additionally, it features programmable charge current, constant-voltage or constant-current charging, and precise voltage and current regulation, to ensure that the battery is charged properly and efficiently.

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