UB264B

DESCRIPTION

The UTC UB264B Series is secondary protection IC for 2-, 3-, or

4-Cell lithium-ion rechargeable battery packs, and incorporates a

high-accuracy voltage detection circuit.

The UTC UB264B Series also includes a high accuracy delay

circuit for over voltage detection time without external capacitors.

FEATURES

*  High-accuracy voltage detection circuit for each cell

*  Overcharge detection voltage n (n=1 to 4): 4.30V to 4.80V (in

   50mV steps)

*  Overcharge hysteresis voltage n (n=1 to 4): -0.52V±0.21V,

−0.39V±0.16V, −0.26V±0.11V, −0.13V±0.06V, None

*  Delay times for overcharge detection can be set by an internal

   circuit without external capacitors

*  Output latch function after overcharge detection

*  CMOS output active “H”

*  Wide operating voltage range 3.6V to 24V

*  Wide operating temperature range −40°C to +85°C

*  Low current consumption: 2.5μA typ. (+25°C) at 3.5V for

   each cell

规格书UB264B