UB209A_15 datasheet(5/9 Pages) UTC

Part #	UB209A

Description	BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION

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Manufacturer	UTC [Unisonic Technologies]

Direct Link	http://www.utc-ic.com

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UB209A

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

5 of 9

www.unisonic.com.tw

QW-R502-940.a



ELECTRICAL CHARACTERISTICS (TA=25°C unless otherwise specified)

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

UNIT

Test

circuit

Overcharge Detection Voltage

VCU

VCU -0.05

VCU

VCU +0.05

V

1

Overcharge Release Voltage

VCL

VCL-0.05

VCL

VCL+0.05

V

1

Cell-balance Detection Voltage

VBU

VBU-0.05

VBU

VBU+0.05

V

1

Cell-balance Release Voltage

VBL

VBL-0.05

VBL

VBL+0.05

V

1

Over Discharge Detection

Voltage

VDL

VDL-0.10

VDL

VDL+0.10

V

1

Over Discharge Release

Voltage

VDU

VDU-0.10

VDU

VDU+0.10

V

1

CDT Pin Resistance (Note 1)

RCDT

VDS=3.5V, VCDT=0V

4.76

8.31

10.9

MΩ

2

CDT Pin Detection Voltage

VCDET

VDS=3.5V

VDS×0.65 VDS×0.70

VDS×0.75

V

3

Operating Voltage Between

VDD and VSS

VDSOP

Output Voltage of CO,

DO, CB Fixed

1.5

8.0

V

CTLC Pin H Voltage

VCTLCH VDS=3.5V

VDS×0.55

VDS×0.90

V

4

CTLD Pin H Voltage

VCTLDH VDS=3.5V

VDS×0.55

VDS×0.90

V

4

CTLC Pin L Voltage

VCTLCL VDS=3.5V

VDS×0.10

VDS×0.45

V

4

CTLD Pin L Voltage

VCTLDL VDS=3.5V

VDS×0.10

VDS×0.45

V

4

Current Consumption During

Operation (Note 2)

IOPE

VDS=3.5V

3.5

8.0

µA

5

Source Current CTLC (Note 2)

ICTLCH

VDS=3.5V, VCTLC=0V

300

400

500

nA

6

Source Current CTLD (Note 2

ICTLDH

VDS=3.5V, VCTLD=0V

300

400

500

nA

6

Source Current CB

ICBH

VCB=4.0V, VDS=4.5V

30

µA

7

Sink Current CB

ICBL

VCB=0.5V, VDS=3.5V

30

µA

7

Sink Current CO

ICOL

VCO=0.5V, VDS=3.5V

30

µA

7

Leakage Current CO

ICOH

VCO=24V, VDS=4.5V

0.2

µA

8

Sink Current DO

IDOL

VDO=0.5V, VDS=3.5V

30

µA

7

Leakage Current DO

IDOH

VDO=24 V, VDS=1.8V

0.2

µA

8

Notes:1.In the UTC UB209A Series, users are able to set delay time for the output pins. By using the following

formula, delay time is calculated with the value of CDT pin’s resistance in the IC (RCDT) and the value of

capacitor set externally at the CDT pin (CCDT).

tD [s]=-ln(1-VCDET /VDS)×CCDT [µF]×RCDT [MΩ]

=-ln (1-0.7(Typ.) )×CCDT [µF]×8.31MΩ (Typ.)

=10.0MΩ(Typ.)×CCDT [µF]

In case of the capacitance of CDT pin CCDT=0.01µF, the output pin delay time tD is calculated by using the

above formula and as follows.

tD [s]=10.0MΩ(Typ.)×0.01µF=0.1s(Typ.)

Test RCDT and the CDT pin detection voltage (VCDET) by test circuits shown in this datasheet after applying

the power supply while pulling-down the CTLC, CTLD pins to the level of VSS pin outside the IC.

2.In case of using CTLC, CTLD pins pulled-down to the level of VSS pin externally, the current flows into the

VDD pin (IDD) is calculated by the following formula.

IDD=IOPE+ICTLCH+ICTLDH

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