Nisshinbo Micro Devices R5668Z

The R5668 series 1-cell Li-Ion battery protection IC provides standard battery protection features but also enhanced features for a higher level of safety and reliability. An additional temperature sensor input measures the battery's temperature periodically during charging and discharging and turns off both the charge and discharge MOSFETs during an overtemperature event. A second additional input is used to set the IC in a forced standby mode to lower current consumption when applications are shipped or stored for extended periods, ensuring that the battery remains charged and ready for initial use.

Key features

• Additional temperature sensor input
• Additional forced standby mode
• Ultra-small package
• Maximum ratings: 12 V

Additional features

• Absolute maximum ratings: 12 V
• Supply current normal mode / Standby current: Typ.3.0 μA / Max.0.04 μA
• Overcharge Detection Voltage (VDET1): 4.2 V to 4.6 V (in 0.001 V step, ±10mV)
• Overdischarge Detection Voltage (VDET2): 2.0 V to 3.4 V (in 0.005 V step, ±35mV)
• Discharge Overcurrent Detection Voltage (VDET3): 0.010 V to 0.080 V
• Charge Overcurrent Detection Voltage (VDET4): −0.010 V to −0.080 V
• Short-circuit Detection Voltage (VSHORT): 0.025 V to 0.125 V
• Thermal detection temperature: 40°C to 85°C (in 5°C step, ±3°C)
• 0 V battery charge inhibition voltage: 1.000 V to 2.000 V (in 0.010 V step, ±50mV)
• Overcharge Detection Delay Time (tVDET1): 1024 ms / 2048 ms / 4096 ms
• Overcharge Release Delay Time (tVREL1): 16 ms
• Overdischarge Detection Delay Time (tVDET2): 16 ms / 32 ms / 128 ms
• Discharge Overcurrent Detection Delay Time (tVDET3): 16 / 32 / 128 / 256 / 512 / 1024 ms
• Charge Overcurrent Detection Delay Time (tVDET4): 8 / 16 ms
• Short-circuit Detection Delay Time (tSHORT): 280 μs
• Release Delay Time for Overdischarge, Discharge Overcurrent, Charge Overcurrent (tVREL2, tVREL3, tVREL4): 1.1 ms
• Thermal Detection Delay Time (tTDET1/2): 1024 ms / 2048 ms / 4096 ms
• Thermal Release Delay Time (tTREL1/2): 128 ms
• Forced Standby detection delay Time: 16 ms / 256 ms
• Forced Standby release delay Time: 1.1 ms
• 0 V battery charging: Permission / Inhibition
• Hysteresis for Overdischarge Release Voltage: Unavailable
• Discharge Overcurrent Release Condition: Auto release type / Latch type
• Temperature monitoring: Non-sensing / Sensing time: 512 ms / 10 ms
• Package R5668Z: WLCSP-8-P14 (L1.55 x W0.92 x H0.36 mm)

Applications

• 1-cell Li-Ion battery packs
• Smartphones
• Electronic gadgets
• Wearable devices