BQ24316DSJR

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Function:	Battery Protection
Battery Chemistry:	Lithium-Ion
Number of Cells:	--
Fault Protection:	Over Current, Over Temperature, Over/Under Voltage
Interface:	--
Operating Temperature:	0°C ~ 125°C (TJ)
Package / Case:	12-VFDFN Exposed Pad
Supplier Device Package:	12-VSON (4x3)
Base Part Number:	BQ24316

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Introduction of the BQ24316DSJR

The BQ24316DSJR is a 3.2 A step-down battery charger primary side controller from Texas Instruments. It integrates a high-accuracy primary side buck power stage and provides a true RDSON sense to monitor the MOSFET resistance. The device includes a low side control loop and over-current protection that can provide a very low loop-gain margin, reducing the possibility of transient errors in the system. Additionally, it has a power path manager (PPM) with advanced over-voltage protection, providing a low-cost, low-risk solution for managing battery power.

Application Field of the BQ24316DSJR

The BQ24316DSJR is an ideal choice for battery-powered applications such as portable media players, wearables, and other mobile devices. The device supports a wide input voltage range (4.5V to 28V), and its dedicated PPM allows for an efficient system design.Moreover, the BQ24316DSJR is suitable for applications requiring accurate power delivery, such as digital health and medical devices. Its high-accuracy power-stage provides a true RDSON sense that reduces system error sources, making it an ideal solution for such applications. It also incudes voltage protections and over-current protection features which further enhance system reliability.

Working Principle of the BQ24316DSJR

The BQ24316DSJR primary side buck power stage integrates an innovative high-accuracy RDSON sensing scheme to accurately sense the low-side MOSFET RDSON. This feature reduces system error sources and makes the solution suitable for applications requiring accurate power delivery.In addition, the BQ24316DSJR includes a power path manager (PPM) with advanced over-voltage protection and enables a very low loop-gain margin requirement, providing superior transient performance and improved system stability.Further, the device incorporates a low side current loop control and over-current protection, which can provide effective over-current protection and maintain a very low loop-gain margin.

Conclusion

The BQ24316DSJR primary side buck power stage from Texas Instruments is an ideal solution for battery-powered applications such as portable media players, wearables and other mobile devices. Its high-accuracy RDSON sensing scheme improves system accuracy and performance, while its dedicated power path manager provides efficient power management and reliable system protection. The device\'s low side current loop control and over-current protection ensure system stability and reliability.

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