UTC UB261G-AA-AG6-R, UB261G-AB-AG6-R, UB261G-AC-AG6-R, UB261G-AD-AG6-R, UB261G-AE-AG6-R Schematic [ru]

UNISONIC TECHNOLOGIES CO., LTD

UB261

Preliminary CMOS IC

1-CELL LITHIUM-ION/POLYMER
BATTERY PROTECTION IC

 DESCRIPTION

The UTC UB261 is a series of lithium-ion/lithium-polymer

rechargeable battery protection ICs incorporating high accuracy
voltage detection circuits and delay circuits.

The UTC UB261 is suitable for protection of single cell lithium-ion /

lithium polymer battery packs from overcharge, over discharge and
over current.

The ultra-small package and less required external components

make it ideal to integrate the UTC UB261 into the limited space of

battery pack.

 FEATURES

* Wide Supply Voltage Range: VDD=1.5V~8.0V
*

Ultra-Low Quiescent Current: I

*

Ultra-Low Power-Down Current: I

*

Overcharge Detection Voltage: V

*

Overcharge Release Voltage: V

*

Over Discharge Release Voltage: V

*

Over Discharge Release Voltage: V

*

Over Current 1 Detection Voltage: V

*

Over Current 2 Detection Voltage: V

*

Short Circuit Detection Voltage: V

*

Charger Detection Voltage: V

* Delay Times are Generated by an Internal Circuit. (External Capacitors are Unnecessary.)

=3.0A (VDD=3.5V)

OPE

=0.2A (VDD=1.5V)

PDN

=3.9V~4.4V

CU

=3.8V~4.4V

CL

=2.0V~3.0V

DL

=2.0V~3.4V

DU

=0.05V~0.30V

IOV1

=0.5V (Fixed)

IOV2

=1.2V (Fixed)

SHORT

=-0.7V (Fixed)

CHA

6

4

5

3

2

1

SOT-26

 ORDERING INFORMATION

Ordering Number

Lead Free Halogen Free

UB261L-xx-AG6-R UB261G-xx-AG6-R SOT-26 Tape Reel

Note: xx: Output Voltage, refer to Marking Information.

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Package Packing

UB261 Preliminary CMOS IC

 MARKING INFORMATION

PACKAGE VOLTAGE CODE (Note) MARKING

SOT-26

Note: Refer to Serial Code List

 SERIAL CODE LIST

Overcharge

Model Code

AA 4.325 4.075 2.50 2.90 0.150
AB 4.325 4.075 2.50 2.90 0.100
AC 4.300 4.200 2.40 3.00 0.200
AD 4.280 4.180 2.50 3.00 0.150

UB261

AE 4.280 4.080 2.30 2.40 0.100
AF 4.275 4.075 2.50 2.90 0.150
AG 4.250 4.150 2.40 3.00 0.100
AH 4.200 4.100 2.80 2.90 0.150

AI 4.100 3.850 2.50 2.90 0.150

Detection

Voltage
[V

](V)

CU

 PIN CONFIGURATION

XX

Overcharge

Release

Voltage
[V

](V)

CL

Over discharge

Detection

Voltage
[V

](V)

DL

Over discharge

Release

Voltage

[V

](V)

DU

Over Current

Detection

Voltage

[V

](V)

IOV1

 PIN DESCRIPTION

PIN NO. PIN NAME DESCRIPTION

1 DO For discharge control: FET gate connection pin
2 VM For current sense and charger detection input pin
3 CO For charge control: FET gate connection pin
4 DP Test pin for delay time measurement
5 VDD Positive power input
6 VSS Negative power input

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UB261 Preliminary CMOS IC

 BLOCK DIAGRAM

V

DD

VM

Charger Detector

Overdischarge
Detector

Overcharge
Detector

V

SS

From Oscillator

0V Battery Charge
Inhibition Detector

Oscillator

Divider

Control

Logic

Short circuit Detector

Over current 2 Detector

Over current 1 Detector

V

M

DO

CODP

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UB261 Preliminary CMOS IC

 ABSOLUTE MAXIMUM RATING (V

=0V, T

SS

=25° unless otherwise specified)

A

PARAMETER SYMBOL RATINGS UNIT
Input Voltage Between VDD and VSS (Note 2) VDD V
CO Output Pin Voltage VCO V
DO Output Pin Voltage VDO V
VM Input Pin Voltage VM V
Ambient Operating Temperature T
Storage Temperature T

-40 ~ +85 °

OPR

-55 ~ +125 °

STG

-0.3 ~ VSS+12 V

SS

-12 ~ VDD+0.3 V

DD

-0.3 ~ VDD+0.3 V

SS

-14 ~ VDD+0.3 V

DD

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. Pulse (sec) noise exceeding the above input voltage (VSS+12V) may cause damage to the IC.

 ELECTRICAL CHARACTERISTICS (V

=0V, TA=25° unless otherwise specified)

SS

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

CURRENT CONSOMPTION

Supply Current I
Power-Down Current I

VDD=3.5V, VM=0V 3.0 8.0 A

OPE

VDD=VM=1.5V 0.2 0.5 A

PDN

OPERATING VOLTAGE

Operating Voltage Between VDD-pin and
V

-pin

SS

Operating Voltage Between VDD-pin and
V

-pin

M

V

1.5 8 V

DS1

V

1.5 10 V

DS2

DETECTION VOLTAGE

Overcharge Detection Voltage VCU VCU-0.050 VCU VCU+0.050 V
Overcharge Release Voltage VCL VCL-0.050 VCL VCL+0.050 V
Overdischarge Detection Voltage VDL VDL-0.100 VDL VDL+0.100 V
Overdischarge Release Voltage VDU VDU-0.100 VDU VDU+0.100 V
Over Current 1 Detection Voltage V
Over Current 2 Detection Voltage V
Load Short Circuit Detection Voltage V
Charger Detection Voltage V

IOV1VDD

IOV2VDD

SHORT

CHA

=3.5V V

IOV1

-0.03 V

IOV1 VIOV1

+0.03 V

=3.5V 0.35 0.50 0.65 V

0.5 1.2 1.7 V

VDUVDL -1.6 -0.7 -0.2 V

0V BATTERY CHARGE VOLTAGE

0V Battery Charge Inhibition Battery
Voltage

V

0.9 1.8 V

0INH

INTERNAL RESISTANCE

Resistance between VM-pin and
V

-pin

DD

Resistance between VM-pin and
V

-pin

SS

R

VMDVDD

R

VMS

=1.8V, VM=0V 100 300 900 k

VDD=3.5V, VM=1.0V 10 30 70 k

OUTPUT RESISTANCE

CO-pin Resistance “H” R
CO-pin Resistance “L” R
DO-pin Resistance “H” R
DO-pin Resistance “L” R

COHVCO

COL

DOHVDO

DOL

=3.0V, VDD=3.5V, VM=0V 5 10 k

VCO=0.5V, VDD=4.5V, VM=0V 5 10 k

=3.0V, VDD=3.5V, VM=0V 5 10 k

VDO=0.5V, VDD=VM=1.8V 5 10 k

DELAY TIME

Overcharge Detection Delay Time tCU 0.9 1.2 1.5 s
Overdischarge Detection Delay Time tDL 110 150 190 ms
Over Current 1 Detection Delay Time t
Over Current 2 Detection Delay Time t
Short Circuit Detection Delay Time t

VDD=3.5V 6 9 12 ms

IOV1

VDD=3.5V 1 2.2 3.2 ms

IOV2

120 300 380 µs

SHORT

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