1-cell Li-ion linear battery charger w/ 1-A FET, AC present & charge enable in QFN-11
Product details
Parameters
Package | Pins | Size
Features
- Small 3-mm × 3-mm MLP (QFN) Package
- Ideal for Low-Dropout Designs for Single-Cell Li-Ion
or Li-Pol Packs in Space Limited Applications - Integrated Power FET and Current Sensor for Up to 1-A
Charge Applications - Reverse Leakage Protection Prevents Battery Drainage
- Integrated Current and Voltage Regulation
- ±0.5% Voltage Regulation Accuracy
- Charge Termination by Minimum Current and Time
- Pre-Charge Conditioning With Safety Timer
- Status Outputs for LED or System Interface Indicates
Charge and Fault Conditions - Battery Insertion and Removal Detection
- Works With Regulated and Unregulated Supplies
- Short-Circuit Protection
- Charge Voltage Options: 4.2 V and 4.36 V
Description
The bqTINY™ series are highly integrated Li-Ion and Li-Pol linear charge management devices targeted at space limited portable applications. The bqTINY™ series offer integrated powerFET and current sensor, reverse blocking protection, high accuracy current and voltage regulation, charge status, and charge termination, in a small package.
The bqTINY™ charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety feature for charge termination. The bqTINY™ automatically restarts the charge if the battery voltage falls below an internal threshold. The bqTINY™ automatically enters sleep mode when VCC supply is removed.
In addition to the standard features, different versions of the bqTINY™ offer a multitude of additional features. These include temperature sensing input for detecting hot or cold battery packs; power good (PG) output indicating the presence of valid input power; a TTL-level charge-enable input (CE) used to disable or enable the charge process; and a TTL-level timer and termination enable (TTE) input used to disable or enable the fast-charge timer and charge termination.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | Single-Chip, Li-Ion Charge Management IC For Handheld Applications (bqTINY) datasheet (Rev. K) | Jan. 27, 2014 |
Technical articles | When to use rechargeable batteries in small battery applications | Oct. 01, 2019 | |
Application note | QFN and SON PCB Attachment (Rev. B) | Aug. 24, 2018 | |
Technical articles | Should I use a linear charger or a switching charger? | Oct. 30, 2015 | |
Technical articles | Summertime and the livin' is easy | Jun. 20, 2014 | |
User guide | 1-A Single-Chip Li-Ion & Li-Pol Charge Management IC w/Integrated PowerFET (Rev. A) | Oct. 29, 2002 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The bq24012EVM is an evaluation tool for the bq24012 linear single-cell Li-Ion charger with integrated FET and current sense in 3x3mm2 QFN package. The EVM is a complete designed-and-tested charger circuit that allows the user to test all functions of the bq24012 and to charge a single-cell Li-Ion (...)
Software development
Features
The program gives the user:
- Worse-case limits of the resistance
- Trip voltages
- Temperatures of the design
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VSON (DRC) | 10 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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