The bq25015/7 are highly integrated charge and power management devices targeted at space-limited bluetooth applications. The bq25015/7 devices offer integrated power FET and current sensor for charge control, reverse blocking protection, high accuracy current and voltage regulation, charge status, charge termination, and a highly efficient and low-power dc-dc converter in a small package.
The bq25015/7 devices charge 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 bq25015/7 automatically re-starts the charge if the battery voltage falls below an internal threshold. The bq25015/7 automatically enters sleep mode when VCC supply is removed.
The integrated low-power high-efficiency dc-dc converter is designed to operate directly from a single-cell Li-ion or Li-Pol battery pack. The output voltage is either adjustable from 0.7 V to VBAT, or fixed at 1.8 V (bq25017) and is capable of delivering up to 300-mA of load current. The dc-dc converter operates at a synchronized 1 MHz switching frequency allowing for the use of small inductors.
Number of series cells |
Function |
Cell chemistry |
Charge current (Max) (A) |
Operating Vin (Min) (V) |
Operating Vin (Max) (V) |
Absolute Vin (safety rating) (Max) ((V)) |
Battery charge voltage (Min) (V) |
Battery charge voltage (Max) (V) |
Features |
Control interface |
Control topology |
Rating |
Operating temperature range (C) |
Package Group |
Package size: mm2:W x L (PKG) |
BQ25015 | BQ25017 |
---|---|
1 | 1 |
Charger | Charger |
Li-Ion/Li-Polymer | Li-Ion/Li-Polymer |
0.5 | 0.5 |
4.5 | 4.5 |
6.5 | 6.5 |
7 | 7 |
4.2 | 4.2 |
4.2 | 4.2 |
Integrated Buck Converter UVLO |
Integrated Buck Converter UVLO |
Standalone (RC-Settable) | Standalone (RC-Settable) |
Switch-Mode Buck | Switch-Mode Buck |
Catalog | Catalog |
-40 to 125 | -40 to 125 |
VQFN | 20 | VQFN | 20 |
20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20) | 20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20) |
ご注文 | ご注文 |