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R5434D Series



The R5434D Series are high voltage CMOS-based protection ICs for over-charge of rechargeable three-cell / four-cell / five-cell Lithium-ion / Lithium-polymer battery.
Each of these ICs is composed of five voltage detectors, a reference circuit, a delay circuit, a short circuit, an oscillator, a counter and a logic circuit.
When detecting over-charge, COUT outputs "H" after delay time, makes Nch MOS FET turn on and cut down the fuse.
Package is SON-8.


Absolute Maximum Rating 30V
Supply Current TYP. 3.0µA
Detector thresholds range and accuracy
Over-charge detector threshold 3.6V to 4.5V (5mV steps) (n=1, 2, 3, 4, 5) (±25mV)
Over-charge released voltage VDET1n -0.1 to 0.4V (50mV steps) (n=1, 2, 3, 4, 5)
Output delay time
Over-charge detector output delay 1.5s
Output Delay Time Shorting Function Available
Package SON-8

Tap to see the table


  • Power source for portable communication equipment.
  • Power source for electrical appliances such as PC.
  • Power source for power tools.

Documents Download

Flyer Package Info. code List Quality Assurance Data
R5434D Series SON-8 R5434D Series Reliability

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

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