RT9458WSC

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant
Programmable Features:	--
Fault Protection:	Over Temperature, Over Voltage
Charge Current - Max:	1.55A
Battery Pack Voltage:	4.44V (Max)
Voltage - Supply (Max):	6V
Interface:	I²C
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	20-UFBGA, WLCSP
Supplier Device Package:	20-WLCSP (1.87x2.1)

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Introduction

The RT9458WSC is a highly integrated Power Management and Integrated Circuit (PMIC) targeted at battery charging applications, providing an impressive set of features to enable higher efficient and integrated charging solutions. This PMIC has a wide range of application fields, from mid- and high-end mobile phones to other portable electronic devices. With optimized system-level efficiency, the RT9458WSC is designed for a variety of power management applications and provides a great range of protection features, allowing for stringent safety protection.

Features

The RT9458WSC has a wide range of features that enable a higher efficient and integrated charging solutions, such as:

• Integrated N-Channel MOSFETs for 4 channels LDO with 1A current
• Integrated 4 / 2 / 1 channels of adjustable buck regulator
• Integrated oscillator and Buck converter
• Integrated Linear Power System Controller and Power Path Manager
• Integrated power and protection features
• Integrated USB Type-C compatibility
• Support for multiple battery chemistries
• External EEPROM for externally stored data
• On-chip temperature monitoring unit
• Integrated package with QFN and WLCSP package

Working Principles

The working principle of the RT9458WSC PMIC is focused on efficiently charging the battery and providing system level protection. The RT9458WSC is designed with an integrated USB Type-C compatibility so that it can be used with any type of USB Type-C port-based devices. The integrated N-channel MOSFETs are implemented for the multiple channels of buck and linear regulator, providing a wide voltage range of 0.2V–3.3V. The RT9458WSC is designed for systems that require up to 3A current. The RT9458WSC has an integrated linear power management system controller, power path management, and power and protection features to ensure efficient operation. With the integrated power path manager and multiple channels of buck regulators, the RT9458WSC can be used with different types of battery chemistries. This enables the system to provide constant and stable power supply. The integrated temperature monitoring unit enables the RT9458WSC to implement the user-defined temperature alert system. The user can set the temperature threshold in order to effectively control the system temperature and to protect the device from overheating. The RT9458WSC can also support an external EEPROM if the user requires externally stored data.

Conclusion

The RT9458WSC is a highly integrated Power Management and Integrated Circuit (PMIC) specifically designed for battery charging applications. With its wide range of features, including integrated N-Channel MOSFETs for 4 channels LDO with 1A current, integrated 4 / 2 / 1 channels of adjustable buck regulator, integrated oscillator and Buck converter, integrated Linear Power System Controller and Power Path Manager, integrated power and protection features, integrated USB Type-C compatibility, support for multiple battery chemistries, external EEPROM for externally stored data, and on-chip temperature monitoring unit, the RT9458WSC maximizes the system-level efficiency and provides an impressive set of protection features to ensure stringent safety protection.

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