BQ21040DBVT - TI

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

Part No

BQ21040DBVT
Manufacturer

TI
ChipWorker Part#

CW16498440
Category

Battery Management IC
Package

SOT-23-6
Description

Battery Charger Li-Ion/Li-Pol 1250mA 6Pin SOT-23 T/R
Documentation

Datasheet

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BQ21040DBVT Specifications

Attribute	Attribute Value

Part Number	BQ21040DBVT
Manufacturer	TI
ChipWorker Part#	CW16498440
Category	Battery Management IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	6 Pin
Case/Package	SOT-23-6
Input Voltage (DC)	6.45 V
Output Voltage	4.2 V
Output Current	1.25 A
Number of Positions	6 Position
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	0 ℃
Input Voltage	6.45 V
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Operating Temperature	0℃ ~ 125℃ (TJ)
Product Lifecycle Status	Active
Packaging	Cut Tape (CT)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

Product Description

The bq21040 device is a highly integrated Li-Ion and Li-Pol linear battery charger device targeted at space-limited portable applications. The device operates from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.
The bq21040 has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10 hour safety timer.
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 an 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 pre-charge current and termination current threshold are fixed to 20% and 10%, respectively. The fast charge current value is programmable through an external resistor.

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