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Details for BQ24257RGET by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Battery Management
IC BATT CHARGER LI-ION 2A VQFN-24
BQ24257RGET image

BQ24257RGET by Texas Instruments

IC BATT CHARGER LI-ION 2A VQFN-24
Part Information
BQ24257RGET image
RoHS Compliant
Description
The bq2425x is a highly integrated single-cell Li-Ion battery charger with integrated current sense resistor targeted for space-limited, portable applications with high capacity batteries. The single cell charger has a single input that operates from either a 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: 1) I2C mode, and 2) 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. The bq24257 enters host mode while the I2C registers are accessed and the watchdog timer has not expired (if enabled).
Specifications
Battery Type:
Li-Ion Li-Pol
Input Voltage:
18V
Battery Charge Voltage:
4.2V
Charge Current Max:
2A
Battery IC Case Style:
VQFN
No. of Pins:
24Pins
No. of Series Cells:
1
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)
Alternate Descriptions
Battery Charger Li-Ion 2000mA 3.5V to 4.44V 24-Pin VQFN T/R Avnet America
Battery Charger Li-Ion 2000mA 3.5V to 4.44V 24-Pin VQFN T/R Avnet Europe