Document
UNISONIC TECHNOLOGIES CO., LTD UB240
Preliminary CMOS IC
LION BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
DESCRIPTION
The UTC UB240 Series is secondary protection IC for 1-, 2-, 3-, or 4-Cell lithium-ion rechargeable battery packs, and incorporates a high-accuracy voltage detection circuit. The UTC UB240 Series also includes a high accuracy delay circuit for over voltage detection time can be set by an external capacitor.
FEATURES
* High-accuracy voltage detection circuit for each cell * Overcharge detection voltage n (n=1 to 4): 4.05V to 4.50V (in 50mV steps) * Overcharge hysteresis voltage n (n=1 to 4): 0.25V±0.07V, 0.30V±0.10V * Delay times for overcharge detection can be set by an external capacitor * CMOS output active “H” * Wide operating voltage range 3.6V to 24V * Wide operating temperature range −40°C to +85°C * Low current consumption: 1.5μA typ. (+25°C) at 3.5V for each cell
ORDERING INFORMATION
Ordering Number Lead Free Halogen Free UB240L-xx-S08-R UB240G-xx-S08-R UB240L-xx-S08-T UB240G-xx-S08-T UB240L-xx-P08-R UB240G-xx-P08-R Package SOP-8 SOP-8 TSSOP-8 Packing Reel Tape Tube Reel Tape
www.unisonic.com.tw Copyright © 2013 Unisonic Technologies Co., Ltd
1 of 11
QW-R502-A07.a
Free Datasheet http://www.Datasheet4U.com
UB240
PIN CONFIGURATION
Preliminary
CMOS IC
PIN DESCRIPTION
PIN NO. 1 2 3 4 5 6 7 8 PIN NAME VC1 VC2 VC3 VSS VC4 CD VCC OUT DESCRIPTION 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 power input pin Negative voltage connection pin of battery 4 Negative voltage connection pin of battery 3 Positive voltage connection pin of battery 4 Capacitor connection pin for overcharge detection delay Positive power input pin FET gate connection pin for charge
SERIAL CODE LIST
OVERCHARGE DETECTION VOLTAGE [VCU](V) 4.150±0.050 4.250±0.050 4.300±0.050 4.350±0.050 4.350±0.050 4.450±0.050 OVERCHARGE HYSTERSIS VOLTAGE [VCD](V) 0.250±0.07 0.250±0.07 0.250±0.07 0.250±0.07 0.300±0.10 0.300±0.10 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”
CODE AA AB AC AD AE AF
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 11
QW-R502-Q07.a
Free Datasheet http://www.Datasheet4U.com
UB240
BLOCK DIAGRAM
Preliminary
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 11
QW-R502-Q07.a
Free Datasheet http://www.Datasheet4U.com
UB240
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING (TA= 25°C unless otherwise specified)
PARAMETER SYMBOL RATINGS UNIT Input Voltage Between VCC And VSS VDS VSS−0.3 ~ VSS+26 V Input Pin Voltage (VC1/VC2/VC3/VC4) VIN VSS−0.3 ~ VCC+0.3 V OUT Output Pin Voltage VOUT VSS−0.3 ~ VCC+0.3 V Power Dissipation (Note 2) PD 500 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)
SYMBOL VCUn VCDn TEST CONDITIONS 4.05V ~ 4.50V Adjustment MIN VCUn − 0.050 0.18 TYP VCUn 0.25 MAX VCUn + 0.050 0.32 UNIT V V
PARAMETER DETECTION VOLTAGE Overcharge Detection Voltage n (n = 1, 2, 3, 4) Overcharge Hysteresis Voltage n (n = 1, 2, 3, 4) (Note 1) DELAY TIME Overcharge Detection Delay Time OPERATING VOLTAGE Operating Voltage Between VCC And VSS (Note 2) CURRENT CONSUMPTION Current Consumption During Operation Current Consumption At Power Down VC2 Pin Current VC3 Pin Current VC4 Pin Current OUTPUT VOLTAGE OUT “H” VOLTAGE OUT “L” VOLTAGE
tCU
CCD=0.1μF
1.0
1.5
2.0
S
VDSOP
3.6
24
V
IOPE IPDN IVC2 IVC3 IVC4 VOUT(H) VOUT(L)
V1=V2=V3=V4=3.5V V1=V2=V3=V4=2.3V V1=V2=V3=V4=3.5V V1=V2=V3=V4=3.5V V1=V2=V3=V4=3.5V IOUT = -10μA IOUT = 10μA -0.5 -0.5 -0.5 VCC -0.05
1.5 1.2 0 0 0
6.0 6.0 0.5 0.5 0.5
μA μA μA μA μA V
VSS +0.05
V
Notes: 1. 0.25±0.07V, 0.30±0.10V. 2. After detecting the overcharge, the delay circuit operates normally in the range of operating voltage.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 11
QW-R502-Q07.a
Free Datasheet http://www.Datasheet4U.com
UB240
OPERATING
Preliminary
CMOS IC
1. Overcharge Detection OUT is turned to “H” (for CMOS output active “H”) when the voltage of one of the batteries exceeds the overcharge detection voltage (VCU) during charging under normal conditions beyond the overcharge detection delay time (tCU). This state is called “overcharge.” Attaching FET to the OUT pin provides charge control and a second protection. At that time, the overcharge state is maintained until the voltage of all batteries decreases from the overcharge dete.