MAX17511GTL+

Series:	Quick-PWM™
Packaging:	Tube
Part Status:	Active
Applications:	Controller, Intel IMVP-7, VR12™
Voltage - Input:	4.5 V ~ 5.5 V
Number of Outputs:	2
Voltage - Output:	0.25 V ~ 1.52 V
Operating Temperature:	-40°C ~ 105°C
Mounting Type:	Surface Mount
Package / Case:	40-WFQFN Exposed Pad
Supplier Device Package:	40-TQFN EP
Base Part Number:	MAX17511

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MAX17511GTL+ Application Field and Working Principle

The MAX17511GTL+ is a flexible and powerful power management IC especially designed for applications in the field of cellular handsets. Specifically, it offers a single-cell battery charger solution to power the application with both Lithium ion and LiFePO4 cell support. It offers an adjustable output voltage and current of up to 3.6A and 4.4V. The integrated power path management enables the battery to be charged, discharged and regulated in a very small package size by using a standard 125kHz PWM controller.

Applications

The MAX17511GTL+ is primarily intended for use in mobile phone applications where it can effectively provide the power and logic functions required within a single-cell battery circuit. It is a highly integrated device that combines a voltage regulator, power path management, battery charger and high current inductive load driver into a small, low profile package. Applications range from those supporting task-based shutdowns to those requiring constant power and current regulation. It can also be used in a wide range of consumer electronics like digital cameras and phones.

Working Principle

The MAX17511GTL+ provides a complete power management solution in a single device, which can be used as a standalone solution or in conjunction with other ICs, like battery fuel gauges, to provide more functionality. The device contains an integrated voltage regulator to provide the power conditioning required for the safe operation of the battery. It also contains a powerful inductive load driver capable of driving up to 3.6A in pulse mode. The MAX17511GTL+ also features a power path management controller, which has two main functions: battery charging and battery discharging. During the charging process, the charging current can be adjusted for optimal performance, and it is also capable of controlling the cell voltage and temperature to keep the cell within the safe operating range. When the battery needs to be discharged, the power path management controller will route the charge back to the battery, ensuring a safe and efficient power draw from the battery. In order to provide the safety features needed for battery protection, the MAX17511GTL+ features an integrated over-voltage protection (OVP), under-voltage protection (UVP) and over-temperature protection (OTP). Additionally, it also contains a run-time battery monitoring system and a voltage monitoring system, which help to ensure safe battery operation and prevent any damage to the cells.

Conclusion

The MAX17511GTL+ is a high-performance single-cell power management IC that is well suited for applications in the field of cellular handsets and other consumer electronic devices. It offers excellent features such as adjustable output voltage, current, and temperature control, as well as overvoltage protection and run-time battery monitoring. The integrated power path management and inductive load driver make it a very flexible solution in a very small package.

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