LION BATTERY PROTECTION IC
Description
UNISONIC TECHNOLOGIES CO.
, LTD UB264B
Preliminary CMOS IC
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 Lead Free Halogen Free UB264BL-P08-R UB264BG-P08-R xx: SERIAL CODE, refer SERIAL CODE LIST.
Package TSSOP-8 Packing Tape Reel
Note:
www.
unisonic.
com.
tw Copyright © 2012 Unisonic Technologies Co.
, Ltd
1 of 10
QW-R502-833.
A
Free Datasheet http://www.
Datasheet4U.
com
UB264B
PIN CONFIGURATION
Preliminary
CMOS IC
PIN DESCRIPTION
PIN NAME VDD SENSE VC1 VC2 VC3 VSS CTL CO DESCRIPTION Positive power input pin Positive voltage connection pin of battery 1 Negative voltage connection pin of battery 1 Positive voltage connection pin of battery 2 Negative voltage connection pin of battery 2 Positive voltage connection pin of battery 3 Negative voltage connection pin of battery 3 Positive voltage connection pin of battery 4 Negative power input pin Negative voltage connection pin of battery 4 Overcharge detection latch reset pin FET gate connection pin for charge
PIN NO.
1 2 3 4 5 6 7 8
...
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