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


  Output Delay Time Shorting Function Available


  • Power source for portable communication equipment.
  • Power source for electrical appliances such as PC.
  • Power source for power tools.
Flyer Package Info. code List Quality Assurance Data
R5434D Series SON-8 R5434D Series Reliability

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