BQ24079TRGTR - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

BQ24079TRGTR
Manufacturer

TI
ChipWorker Part#

CW13619500
Category

Battery Management IC
Package

VQFN-16
Description

Battery Charge Management 1.5A USB-Friendly Li-Ion Battery Charger and Power-Path Management IC Battery Charger Li-Ion 1500mA 4.1V 16Pin VQFN EP T/R
Documentation

Datasheet

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BQ24079TRGTR Specifications

Attribute	Attribute Value

Part Number	BQ24079TRGTR
Manufacturer	TI
ChipWorker Part#	CW13619500
Category	Battery Management IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	16 Pin
Case/Package	VQFN-16
Output Voltage	4.1 V
Output Current	1.5 A
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	4.35V ~ 26V
Supply Voltage (Max)	6.4 V
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Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
ECCN Code	EAR99

Product Description

The bq2407xT series of devices are integrated Li-ion linear chargers and system power path management devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter and support charge currents up to 1.5A. The input voltage range with input over-voltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the bq2407xT to meet USB-IF inrush current specification. Additionally, the input dynamic power management (VIN \\- DPM) prevents the charger from crashing incorrectly configure USB sources.
The bq2407xT features dynamic power path management (DPPM) that powers the system while simultaneously and independently charging the battery. The DPPM circuit reduces the charge current when the input current limit causes the system output to fall to the DPPM threshold; thus, supplying the system load at all times while monitoring the charge current separately. This feature reduces the number of charge and discharge cycles on the battery, allows for proper charge termination and enables the system to run with a defective or absent battery pack.
Additionally, the regulated system input enables instant system turn-on when plugged in even with a totally discharged battery. The power-path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents, enabling the use of a smaller adapter.
The battery is charged in three phases: conditioning, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The input current limit and charge current are programmable using external resistors.

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