BQ24257RGET - TI

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

Part No

BQ24257RGET
Manufacturer

TI
ChipWorker Part#

CW20285885
Category

Battery Management IC
Package

VQFN-24
Description

TEXAS INSTRUMENTS BQ24257RGET Battery Charger for 1 Cell of Li-Ion, Li-Pol battery, 18V input, 4.2V / 2A charge, VQFN-24
Documentation

Datasheet

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BQ24257RGET Specifications

Attribute	Attribute Value

Part Number	BQ24257RGET
Manufacturer	TI
ChipWorker Part#	CW20285885
Category	Battery Management IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	24 Pin
Case/Package	VQFN-24
Input Voltage (DC)	18.0 V
Output Voltage	4.2 V
Output Current	2 A
Number of Positions	24 Position
Switching Frequency	3.00 kHz
Output Voltage (Max)	4.2 V
Output Current (Max)	4 A
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Input Voltage	18 V
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Size-Length	4.15 mm
Size-Width	4.15 mm
Size-Height	0.95 mm
Operating Temperature	-40℃ ~ 85℃ (TA)
Product Lifecycle Status	Not Recommended for New Designs
Packaging	Each
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

Product Description

The BQ24257RGET is a Li-ion/LiFePO4 Battery Charger with integrated current-sense resistor. It is targeted for space-limited, portable applications with high capacity batteries. The single cell charger has a single input that operates from either an USB port or AC wall adapter for a versatile solution. BC1.2 compatible D+, D- detection allows for recognition of CDP, DCP, SDP and non-standard USB adapters. The use of an accessory dead battery provision (DBP) pin allows for the system to sync a dead battery state in order to enable or disable the BC1.2 detection in the event of an external USB-PHI. The BQ24257 has two modes of operation, I²C mode and standalone mode. In I²C mode, the host can adjust the charge parameters and monitor the status of the charger operation. In standalone mode, the external resistor sets the input current limit, charge current limit and the input DPM level. This mode also serves as the default settings when a DCP adapter is present.
Robust battery detection algorithm
Charge time optimizer for improved charge times at any given charge current
Open drain status outputs
Voltage based, JEITA compatible NTC monitoring input
Thermal regulation and thermal shutdown
Watchdog timer with disable bit
USB charging compliant
High-efficiency switch-mode charger with integrated current sense resistor
Green product and no Sb/Br
Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

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