Nisshinbo Micro Devices R5460K

The R5460K is an exceptional protection ICs designed for a two-cell Li-ion/polymer battery. It is equipped with standard features such as overcharge/over-discharge voltage and charge/discharge overcurrent detection, which makes the application highly reliable. With a wide overcurrent detection range, the protection IC can handle any challenging overcurrent event with ease. Thanks to its low standby current, the device can operate for an extended period of time. The FET-sense current detection guarantees high accuracy in over-current and short-circuit detection, making it an indispensable tool for any battery-powered device. The device also provides an option to select 0 V battery charging.

Key features

• Supply current (At normal mode) Typ. 4.0 µA
• Standby current Typ. 1.2 µA (A/ D/ E version),   Max. 0.1 µA (C/ F version)
• Over-charge detector (T_a=25°C) ±25mV (T_a=-5 to 55°C) ±30mV
• Over-discharge detector ±2.5%
• Excess discharge-current detector ±15mV
• Excess charge-current detector ±40mV
• Over-charge detector threshold (A/C/E/F version) 4.1V-4.5V step of 0.005V (VD1U/VD1L)
• Over-charge detector threshold (D version) 3.5V-4.0V step of 0.005V (VD1U/VD1L)
• Over-discharge detector threshold 2.0V-3.0V step of 0.005V (VD2U/VD2L)
• Excess discharge-current threshold 0.05V-0.20V step of 0.005V
• 3 options of excess charge-current threshold (1) -0.4V ±40mV (2) -0.2V ±30mV (3) -0.1V ±30mV
• Over-charge released voltage 0.1V-0.4V step of 0.05V (VH1U/VH1L)
• Over-discharge released voltage 0.2V-0.7V step of 0.1V (VH2U/VH2L)
• Over-charge detector output delay 1.0s
• Over-discharge detector output delay 128ms
• Excess discharge-current detector output delay 12ms
• Excess charge-current detector output delay 8ms
• Short Circuit detector output delay 300µs
• At C_OUT is “H”, if V- level is set at –1.6 V, the output delay time of detect the over-charge and over-discharge can be reduced
• (Delay Time for over-charge becomes about 1/60 of normal state.)
• 0 V-battery charge acceptable
• R5460K DFN(PL)1820-6

Applications

• Dual cell battery pack
• Tablets
• Digital cameras
• Battery for drones