BQ21040DBVT

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> Semiconductors - ICs

> Battery Management

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Details for Texas Instruments

BQ21040DBVT

0.8A Single Input Single-Cell Li-Ion and Li-Pol Battery Charger
Buy Directly from Texas Instruments (7178 in Stock)
$0.4400 per unit
Series Information for BQ21040DBVT - Texas Instruments

Features

  • feature
    Charging u2013 1% Charge Voltage Accuracy u2013 10% Charge Current Accuracy u2013 Low Battery Leakage Current (1 u00b5A) u2013 Programmable Charge Current using External Resistor up to 800 mA u2013 4.2-V Li-Ion and Li-Pol Charger
  • feature
    Protection u2013 30-V Input Rating; with 6.6-V Input Overvoltage Protection u2013 Input Voltage Dynamic Power Management u2013 125u00b0C Thermal Regulation; 150u00b0C Thermal Shutdown Protection u2013 OUT Short-Circuit Protection and ISET Short Detection u2013 Overtemperature Sensing Protection Through NTC u2013 Fixed 10-Hour Safety Timer
  • feature
    System

Description

BATT CHARGER LI-ION/LI-POL SOT-23-6
The bq21040 device is a highly integrated Li-Ion and Li-Pol linear battery charger device targeted at spacelimited 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.

Specifications

Battery Type:
Li-Ion Li-Pol
Input Voltage:
6.45V
Battery Charge Voltage:
4.2V
Charge Current Max:
800mA
Battery IC Case Style:
SOT-23
No. of Pins:
6Pins
No. of Series Cells:
1
Operating Temperature Min:
0°C
Operating Temperature Max:
125°C
Product Range:
bq21040 Series
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)

Alternate Descriptions

Avnet America

Battery Charger Li-Ion/Li-Pol 800mA 4.2V 6-Pin SOT-23 T/R

Avnet America product

Avnet Europe

Battery Charger Li-Ion/Li-Pol 800mA 4.2V 6-Pin SOT-23 T/R

Avnet Europe product

Texas Instruments

0.8A Single Input Single-Cell Li-Ion and Li-Pol Battery Charger

Texas Instruments product