UNISONIC TECHNOLOGIES CO., LTD

UB264B

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 10

Copyright © 2012 Unisonic Technologies Co., Ltd

QW-R502-833.A

LION BATTERY PROTECTION

IC FOR 2-SERIAL, 3-SERIAL,

OR 4-SERIAL-CELL PACK

(SECONDARY PROTECTION)

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

ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

UB264BL-P08-R

UB264BG-P08-R

TSSOP-8

Tape Reel

Note: xx: SERIAL CODE, refer SERIAL CODE LIST.