BD71631QWZ (New)
Linear Charger for Low Voltage Battery
BD71631QWZ is a linear charger for low charge voltage battery. The battery charge voltage, charge current, termination current are set using external resisters.
For Automotive usage, please contact Sales.
Product Detail
Specifications:
Grade
Standard
Supply Voltage(Min.)[V]
2.9/4.0 (Charge Current 30mA/300mA)
Supply Voltage(Max.)[V]
5.5
Charge Voltage [V]
2.0V~4.7V(±2%)
Operating Temperature (Min.)[°C]
-30
Operating Temperature (Max.)[°C]
105
Package Size [mm]
2.4x1.8 (t=0.4)
Features:
- Adjustable Termination Current: 50μA to 10mA
- Low Quiescent Battery Current: IBATT = 0μA (typ)
- NTC Thermistor Input for Temperature Qualified Charging
- Open-Drain Charge indicator LED Output
- Fixed 10 hour Safety Timer
- Thermal Shutdown
- Under Voltage Lockout Protection
- Battery Over Voltage Protection
Evaluation
Board
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- Evaluation Board
- BD71631QWZ-EVK-001
This EVK is for evaluating the linear charging IC BD71631QWZ, and charges 4.2V from the 5V input voltage. BD71631QWZ accepts a power supply input range of 2.9V to 5.5V and generates a charging battery voltage ranging from 2.0V to 4.7V using external resistors. If the charging current is VIN ≥ 4V, it can be used up to 300mA under the condition of VIN-VOUT ≥ 1V and up to 100mA under the condition of VIN-VOUT ≥ 0.3V. If 2.9V ≤ VIN ≤ 5.5V, it can be used up to 30mA under the condition of VIN-VOUT ≥ 0.3V. The charging current can be set with an external resistor. The termination current can be set from 50μA to 10mA using external resistors. Additional protection functions include a built-in Fixed 10-hour Safety Timer, UVLO(Under Voltage Lock Out), TSD(Thermal Shutdown Detection), and Battery Over Voltage Protection.
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- Reference Design
- REFLVBMS001-EVK-001
This collaboration board charges the EnerCera® Pouch rechargeable battery manufactured by NGK, and outputs the power stored in the EnerCera® by stepping down and stabilizing it. The Power Supply and RESET ICs with Nano Energy™ echnology maximizes the battery life.