Document
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
SERIAL CODE LIST
OVERCHARGE DETECTION VOLTAGE [VCU](V) 4.45±0.050 4.35±0.050 4.50±0.050 4.35±0.050 4.30±0.050 4.45±0.050 4.30±0.050 4.40±0.050 OVERCHARGE HYSTERSIS VOLTAGE [VHC](V) -0.39±0.16 -0.39±0.16 -0.39±0.16 -0.39±0.16 -0.39±0.16 -0.39±0.16 -0.39±0.16 -0.39±0.16 OVERCHARGE DETECTION DELAY TIME [tCU](S) 4.0±1.0 4.0±1.0 4.0±1.0 2.0±0.5 4.0±1.0 2.0±0.5 2.0±0.5 4.0±1.0 OVERCHARGE RELEASE DELAY TIME [tCL](mS) 60.0±20.0 60.0±20.0 60.0±20.0 30.0±10.0 60.0±20.0 30.0±10.0 30.0±10.0 60.0±20.0
MODEL
CODE
OUTPUT FORM CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” 2 of 10
QW-R502-833.A
AA AB AC AD UB264B AE AF AG AH
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Free Datasheet http://www.Datasheet4U.com
UB264B
BLOCK DIAGRAM
SENSE
Preliminary
CMOS IC
Oscillator Overcharge Detector 1
VDD
VC1
VC2
Overcharge Detector 2
Divider
CO
VC3
Overcharge Detector 3
Control Logic Overcharge Detector 4
CTL
VSS
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 10
QW-R502-833.A
Free Datasheet http://www.Datasheet4U.com
UB264B
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified)
PARAMETER SYMBOL RATINGS UNIT Input Voltage Between VDD And VSS VDS VSS −0.3 ~ VSS+26 V Input Pin Voltage VIN VSS −0.3 ~ VDD+0.3 V CO Output Pin Voltage VCO VSS −0.3 ~ VDD+0.3 V Power Dissipation (Note 2) PD 650 mW Operation Ambient Temperature Topr −40 ~ +85 °C Storage Temperature Tstg −40 ~ +125 °C Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. When mounted on printed circuit board
ELECTRICAL CHARACTERISTICS (TA=25°C, unless otherwise specified)
MIN VCUn− 0.050 TYP VCUn VHCn 3.0 1.5 40 20 10 5 40 20 4.0 2.0 60 30 15 7.5 60 30 5.0 2.5 80 40 20 10 80 40 3.0 24 MAX VCUn+ 0.050 UNIT V V
PARAMETER SYMBOL TEST CONDITIONS DETECTION VOLTAGE Overcharge Detection Voltage VCUn 4.30 ~ 4.80 V, adjustable n (n = 1, 2, 3, 4) VHCn=−0.52 ±0.21V, −0.39 ±0.16V, Overcharge Hysteresis VHCn Voltage n (n = 1, 2, 3, 4) −0.26 ±0.11V, −0.13 ±0.06V, None DELAY TIME Overcharge Detection Delay tCU Time For AD, AF and AG products Overcharge Release Delay tCL Time For AD, AF and AG products Overcharge Timer Reset tTR Delay Time For AD, AF and AG products Transition Time To Test tTST Mode(Note1) For AD, AF and AG products CTL Pin Response Time tCTL INPUT VOLTAGE Operating Voltage Between VDSOP VDD And VSS CTL Input “H” Voltage CTL Input “L” Voltage VCTLH VCTLL
s ms ms ms ms V V
3.6 VDD× 0.95
VDD× 0.4 2.5 2.0 -0.5 -0.5 -0.5 1.0 -0.1 0.4 20 1.5 0 0 0 1.5 10 10 6.0 0.5 0.5 0.5 2.0
V
INPUT CURRENT Current Consumption During IOPE V1=V2=V3=V4=3.5V Operation Current Consumption During IOPED V1=V2=V3=V4=2.3V Overdischarge SENSE Pin Current ISENSE V1=V2=V3=V4=3.5.