BQ27505YZGR-J5

Series:	Impedance Track™
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Not For New Designs
Moisture Sensitivity Level (MSL):	--
Function:	Battery Monitor
Battery Chemistry:	Lithium-Ion
Number of Cells:	1
Fault Protection:	--
Interface:	I²C
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	12-UFBGA, DSBGA
Supplier Device Package:	12-DSBGA
Base Part Number:	BQ27505

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PMIC - Battery Management

The BQ27505YZGR-J5 is a type of PMIC--or Power Management Integrated Circuit--specifically developed for single-cell Lithium-ion and Lithium-polymer battery management applications. This PMIC is developed and manufactured by Texas Instruments and is the latest addition along with other devices in the advanced family of bq27xxx fuel gauge ICs. The BQ27505YZGR-J5 is designed to accurately monitor the essential parameters of a single-cell lithium-ion or lithion polymer battery\'s state-of-health and accurately calculate the remaining capacity in order to provide the useful time-of-use to the user under various conditions.The BQ27505YZGR-J5 is designed to operate from a wide input voltage range of 2.7 to 5.5V and also draw low current in order to maximize the battery\'s runtime. It also features a dedicated hardware to ensure accurate battery capacity and remaining runtime calculations. The BQ27505YZGR-J5 achieves high accuracy in estimates and readings by incorporating a unique cell temperature measurement, auto adaptable coulomb counting and temperature compensation. This ensures that battery capacity and remaining runtime are accurate and reliable, even in fast charge/discharge scenarios or environments with high-temperature gradients. The device supports an external temperature sensor, which reads the temperature at the batteries location and enables the device to compensate accordingly. This feature promotes safety and reliability by avoiding any potential situations of miscalculation or incorrect readings. The chip also supports a low power 32-bit RISC microprocessor that runs applications without draining energy from the primary or backup batteries.In addition to the traditional battery charge monitoring, the BQ27505YZGR-J5 can also provide other useful information such as the charge time-of-use (TOU) for different battery profiles. This helps the user to select an appropriate battery chemistry for the specific application, indicating the charge duration limits as per the battery safety standards. For example, if the battery has a capacity of 500mAh, the device can calculate the longest time before the battery drops below a certain level of charge.The BQ27505YZGR-J5 can also be used to monitor battery health over time and provide a notification if it detects any unusual parameters that might suggest a shorted or aged battery. This prevents the user from any potential issues such as a over-discharge leading to permenant damage to the battery, or shorting circuiting due to an unstable connection.The device also features a comprehensive set of built-in protective features that ensure its safe and reliable operation of the battery. The chip is designed with overcharge, overvoltage and overtemperature protection that prevents any damage to the battery from an unexpected power surge. It has open circuit detection which detects any faults or shorts in the external circuit that may lead to battery damage. It also supports various levels of temperature monitoring, so the device can differentiate between expected and excessive temperatures.Overall, the BQ27505YZGR-J5 is designed to provide reliable and accurate battery four parameters such as state-of-charge, state-of-health, state-of-usage, and time remaining for various battery chemistries. By accurately monitoring, calculating and providing useful notifications, this integrated circuit can be the perfect solution for single cell lithium-ion and lithium-polymer based applications. It ensures the safe operation of the battery and its components and reduces the risk of any potential damage or malfunctions.

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