Features: · Li-Ion Or Li-Pol Charge Management and Synchronous DC-DC Power Conversion In a Single Chip
· Optimized for Powering Bluetooth Headsets and Accessories
· Charges and Powers the System from Either the AC Adapter or USB with Autonomous Power Source Selection
· Integrated USB Charge Control with Selectable 100 mA and 500 mA Charge Rates
· Integrated Power FET and Current Sensor for Up to 500 mA Charge Applications AND 100 mA 1.8 V DC-DC Controller with Integrated FET
· Reverse Leakage Protection Prevents Battery Drainage
· Automatic Power Save Mode For High Efficiency at Low Current, or Forced PWM for Frequency Sensitive Applications
Application· Bluetooth Headsets
· Bluetooth Accessories
· Low-Power Handheld Devices
Specifications
| Supply voltage |
AC, USB (wrt VSS) |
0.3 V to 7 V |
| Input voltage |
PG, OUT, ISET1, ISET2, STAT1, STAT2, TS (wrt VSS) |
0.3 V to 7 V |
| EN, FB, FPWM, SW (wrt VSS) |
VOUT + 0.3 V |
| Output sink/source current |
PG, STAT1, STAT2 |
15 mA |
| TS |
200 A |
| Output source current |
OUT |
1.5 A |
| Storage temperature range, Tstg |
65 to 150 |
| Junction temperature range, TJ |
0 to 125 |
| Lead temperature (solderig, 10 seconds) |
260 |
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to the network ground terminal unless therwise noted.
DescriptionThe bqHYBRID™ series are highly integrated charge and power management devices targeted at space-limited bluetooth applications. The bqHYBRID series 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 bqHYBRID 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 bqHYBRID automatically re-starts the charge if the battery voltage falls below an internal threshold. The bqHYBRID automatically enters sleep mode when VCC supply is removed.
The integrated low-power high-efficiency dc-dc con verter is designed to operate directly from a svionltgaleg-eceilsl Lei-iItohner oar dLjui-sPtaobl lbeatftreormy p0a.c7k.VThteo oVuBtpAuTt (bq25010), fixed at 3.3 V (bq25011), or fixed at 1.8 V (bq25012), and is capable of delivering up to 150-mA of load current. The dc-dc converter operates at a synchronized 1 MHz switching frequency allowing for the use of small inductors.
bq25012 Data Sheet
