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Unisonic Technologies |
UNISONIC TECHNOLOGIES CO., LTD
UB244A
Preliminary
LI-ION BATTERY PROTECTION
IC FOR 1-CELL TO 4-CELL PACK
(SECONDARY PROTECTION)
DESCRIPTION
The UTC UB244A 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 UB244A 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): 0.38V±0.10V,
0.25V±0.07V, 0.13V±0.04V, 0.045V±0.02V, None
* 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
CMOS IC
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UB244AL-xx-SM1-R
UB244AG-xx-SM1-R
Note: xx: Output Voltage, refer to Marking Information.
Package
MSOP-8
UB244AG-xx-SM1-R
(1)Packing Type
(2)Package Type
(3)Output Voltage Code
(4)Halogen Free
(1) R: Tape Reel
(2) SM1: MSOP-8
(3) xx: Refer to Marking Information
(4) G: Halogen Free, L: Lead Free
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
1 of 11
QW-R502-857.a
Free Datasheet http://www.Datasheet4U.com
UB244A
PIN CONFIGURATION
Preliminary
CMOS IC
PIN DESCRIPTION
PIN NO.
1
2
3
PIN NAME
VCC
SENSE
VC1
4 VC2
5 VC3
6 VSS
7 ICT
8 CO
SERIAL CODE LIST
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
Capacitor connection pin for overcharge detection delay
FET gate connection pin for charge
MODEL
UB244A
CODE
AA
AB
AC
AD
AE
AF
AG
AH
AI
AJ
AK
AL
OVERCHARGE DETECTION
VOLTAGE
[VCU](V)
4.450±0.050
4.115±0.050
4.350±0.050
4.450±0.050
4.300±0.050
4.400±0.050
4.500±0.050
4.475±0.050
4.350±0.050
4.150±0.050
4.250±0.050
4.050±0.050
OVERCHARGE HYSTERSIS
VOLTAGE
[VCD](V)
0.380±0.10
0.130±0.04
0.045±0.02
0.045±0.02
0.250±0.07
0.045±0.02
0.380±0.10
0.380±0.10
0.250±0.07
0.250±0.07
0.250±0.07
0.250±0.07
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”
CMOS output active “H”
CMOS output active “H”
CMOS output active “H”
CMOS output active “H”
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 11
QW-R502-857.a
Free Datasheet http://www.Datasheet4U.com
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