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R5400N Series

Li-ion/polymer 1Cell Protector



The R5400N 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 discharge-current.

Each of these ICs is composed of three voltage detectors, reference units, a delay circuit, a short circuit detector, an oscillator, a counter, and a logic circuit. SOT-23-5 package is available.


Manufactured with High Voltage Tolerant Absolute Maximum Rating Process Supply Voltage (VDD) 12V (Absolute Maximum Rating)
Charge Negative Input voltage (V-) -35V (Absolute Maximum Rating)
Low supply current Supply Current (IDD) Typ.3.5µA (A Version)
Typ.4.0µA (B Version)
Standby Current (Is) Max.0.1µA
High accuracy detector threshold Over-charge ±25mV (25°C), ±30mV (-5 to 55°C)
Over-discharge ±2.5%
Excess discharge-current ±15mV
Variety of detector threshold Over-charge 4.0V to 4.5V (0.005V steps)
Over-discharge 2.0V to 3.0V (0.1V steps)
Excess discharge-current 0.05V to 0.20V (0.005V steps)
Internal fixed Output delay time Over-charge detector Output Delay Typ.1.1s or 275ms
Over-discharge detector Output Delay Typ.20ms
Excess discharge-current Typ.12ms
Short Circuit detector Output Delay Typ.300µs
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 1/60 of normal state.
0V-charge option Selectable
Package SOT-23-5

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  • Li-ion / Li polymer protector of over-charge, over-discharge, excess discharge-current for battery pack
  • High precision protectors for cell-phones and any other gadgets using on board Li-ion / Li polymer battery

Documents Download

Flyer Package Info. Quality Assurance Data
R5400N Series SOT-23-5 Reliability

All PDF files are less than 1MB unless otherwise stated.

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