R5471K Series [ Non-promotion Products ]

High Accuracy Li-ion/polymer 1Cell protector IC


The R5471 Series are high input voltage CMOS-based protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion (Li-ion) / Lithium polymer excess load current, further include a short circuit protector for preventing large external short circuit current and excess charge/discharge-current.

Each of these ICs is composed of four voltage detectors, reference units, a delay circuit, a short circuit protector, an oscillator, a counter, and a logic circuit.

Manufactured with High Voltage Tolerant Absolute Maximum Rating Process Supply Voltage (VDD) 12V (Absolute Maximum Rating)
Charge Negative Input voltage (V-) -30V (Absolute Maximum Rating)
Low supply current Supply Current (IDD) Typ.4.0µA
Standby Current (Is) Max.0.1µA
High accuracy detector threshold Over-charge ±10 mV (0 to 50°C)
Over-discharge ±2.5%
Excess discharge-current ±10mV
Excess charge-current ±20mV
Variety of detector threshold Over-charge 4.1V to 4.5V (0.005V steps)
Over-discharge 2.0V to 3.0V (0.1V steps)
Excess discharge-current 0.05V to 0.13V (0.005V steps)
Excess charge-current -0.05 to -0.15V (0.005V steps)
Internal fixed Output delay time Over-charge detector Output Delay 1.0s
Over-discharge detector Output Delay Typ.20ms
Excess discharge-current Typ.12ms
Excess charge-current Typ.16ms
Short Circuit detector Output Delay Typ.250µs
Output Delay Time Shortening Function At COUT is “H”, if V-level is set at –2.0V, the Output Delay time of detector and release the over-charge and over-discharge can be reduced.
Delay time for over-charge becomes about 1/110 of normal state.
0V-charge option Unavailable
Package DFN(PLP)1616-6B
  • Li-ion / Li polymer protector of over-charge, over-discharge, excess discharge-current, excess charge-current for battery pack
  • High precision protectors for cell-phones and any other gadgets using on board Li-ion / Li polymer battery

Note : Non-promotion Products
R5471K Series will be discontinued at the end of March, 2015. New adoption is not recommended.

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