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PDF AAT8641 Data sheet ( Hoja de datos )
| Número de pieza | AAT8641 | |
| Descripción | ONE-CELL LI-ION BATTERY PROTECTION IC | |
| Fabricantes | AAT | |
| Logotipo |  |
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Advanced Analog Technology, Inc.
AAT8641 Series
Product information presented is current as of publication date. Details are subject to change without notice
ONE-CELL LI-ION BATTERY PROTECTION IC
FEATURES
GENERAL DESCRIPTION
z Ideal for One-Cell Rechargeable Li-Ion
Battery Packs
z High Accuracy Voltage Detection
z Low Current Consumption:
3μA Supply Current (Typical)
The AAT8641 series are designed for the
protection of one-cell rechargeable Li-Ion battery
pack against over charge, over discharge, over
current and short circuit. They use CMOS
process to provide high accuracy voltage
0.1μA Shutdown Current
detection while consuming relatively low amount
z 3-Level Over Current Detection:
of current.
Over-Current Level 1 /Over Current Level 2
/ Short Circuit
Each of the AAT8641 devices incorporates
voltage comparators, bandgap reference voltage
z Wide Operating Temperature Range:
generator, signal delay circuit, short circuit
− 40 oC to +85 oC
detector, and digital control circuit.
www.DataSheet4U.com
z Small SOT25 Package
During the charge process, when the battery
voltage is charged to a value higher than VC1
PIN CONFIGURATION
(Over Charge Threshold Voltage), the output of
Cout pin switches to low level, i.e., the VN pin
level. The output of Cout pin will switch to high
TOP VIEW
level when the battery voltage is at a level lower
than VC2 (Over Charge Release Voltage), or
when the charger is disconnected from the battery
pack and the battery voltage level is in between
VN
COUT
VC1 and VC2 .
During the discharge process, when the battery
voltage drops to a value lower than VD1 (Over
GND
DOUT
Discharge Threshold Voltage), the output of
Dout pin switches to low level immediately after
the internal delay time elapses. The output of
Dout pin will switch to high level when the
battery voltage is at a level higher than VD2
– 台灣類比科技股份有限公司 –
– Advanced Analog Technology, Inc. –
Page 1 of 25
V2.0
1 page  
Advanced Analog Technology, Inc.
AAT8641 Series
AAT8641B DETECTION VOLTAGE AND DELAY TIME (25℃)
PARAMETER
Over Charge Threshold Voltage
Over Charge Release Voltage
Over Discharge Threshold
Voltage
Over Discharge Release Voltage
Over Charge Delay Time
Over Discharge Delay Time
Over Current Level 1 Detection
Voltage
Over Current Level 2 Detection
Voltage
Short Circuit Detection Voltage
Over Current Level 1 Detection
Delay Time
Over Current Level 2 Detection
Delay Time
Short Circuit Detection Delay
Time
Charger Detection Voltage
Cout High Level Resistance
Cout Low Level Resistance
Dout High Level Resistance
Dout Low Level Resistance
Internal Resistance between VN
and VDD
Internal Resistance between VN
and GND
SYMBOL TEST CONDITION MIN TYP MAX
VC1
Detect Rising Edge of Supply
Voltage
4.325 4.350 4.375
VC2
Detect Falling Edge of Supply
Voltage
VC1-0.25 VC1-0.20 VC1-0.15
VD1
Detect Falling Edge of Supply
Voltage
2.220 2.300 2.380
VD2
Detect Rising Edge of Supply
Voltage
VD1+0.6 VD1+0.7 VD1+0.8
t C1 VDD = 3.6V to 4.5V
0.088 0.125 0.163
t D1 VDD = 3.6V to 2.2V
22.4 32.0 41.6
Detect Rising Edge of “VN” Pin
VOC1
Voltage ( Dout Response with
130
150
170
t OC1 Delay Time)
Detect Rising Edge of “VN”
VOC2
Pin Voltage ( Dout Response
with t OC2 Delay Time)
400 500 600
Vshort
VDD = 3.0V , Detect Rising Edge
of “VN” Pin Voltage
( Dout Response with tshort Delay
Time)
VDD−1.7
VDD −1.3
VDD −0.9
t OC1 VDD = 3.0V
2.8 4.0 5.2
Room Temp. ⇒
t OC2 Low or High Temp. ⇒
VDD = 3.0V
1.4 2.0 2.6
1.1 2.0 3.4
t short VDD = 3.0V
10 50
VCHR
R COH
R COL
R DOH
R DOL
Detect Rising Edge of “ Dout ”
Pin Voltage (when VD1＜VDD＜
VD2)
VDD =3.5V; Cout =3.0V;VN=0V
VDD =4.5V; Cout =0.5V;VN=0V
VDD 3.5V; Dout =3.0V;VN=0V
VDD =1.8V;
Dout =0.5V;VN=1.8V
−2.0
1
150
2.5
2.5
−1.3 −0.6
2 10
602 2,380
5.0 10.0
5.0 10.0
R VND
VDD =1.8V; VN=0V
100 300 900
R VNG
VDD =3.5V; VN=3.5V
50 150 300
UNIT
V
V
V
V
s
ms
mV
mV
V
ms
ms
ms
μs
V
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
– 台灣類比科技股份有限公司 –
– Advanced Analog Technology, Inc. –
Page 5 of 25
V2.0
5 Page 
Advanced Analog Technology, Inc.
AAT8641 Series
AAT8641H DETECTION VOLTAGE AND DELAY TIME (25℃)
PARAMETER
Over Charge Threshold Voltage
Over Charge Release Voltage
Over Discharge Threshold
Voltage
Over Discharge Release Voltage
Over Charge Delay Time
Over Discharge Delay Time
Over Current Level 1 Detection
Voltage
Over Current Level 2 Detection
Voltage
Short Circuit Detection Voltage
Over Current Level 1 Detection
Delay Time
Over Current Level 2 Detection
Delay Time
Short Circuit Detection Delay
Time
Charger Detection Voltage
Cout High Level Resistance
Cout Low Level Resistance
Dout High Level Resistance
Dout Low Level Resistance
Internal Resistance between VN
and VDD
Internal Resistance between VN
and GND
SYMBOL TEST CONDITION
VC1
Detect Rising Edge of Supply
Voltage
VC2
Detect Falling Edge of Supply
Voltage
VD1
Detect Falling Edge of Supply
Voltage
VD2
Detect Rising Edge of Supply
Voltage
t C1 VDD = 3.6V to 4.5V
t D1 VDD = 3.6V to 2.2V
Detect Rising Edge of “VN” Pin
VOC1
Voltage ( Dout Response with
t OC1 Delay Time)
Detect Rising Edge of “VN”
VOC2
Pin Voltage ( Dout Response
with t OC2 Delay Time)
Vshort
VDD = 3.0V , Detect Rising Edge
of “VN” Pin Voltage ( Dout
Response with tshort Delay Time)
t OC1 VDD = 3.0V
Room Temp. ⇒
t OC2 Low or High Temp. ⇒
VDD = 3.0V
t short VDD = 3.0V
VCHR
R COH
R COL
R DOH
R DOL
Detect Rising Edge of “ Dout ”
Pin Voltage (when VD1＜VDD＜
VD2)
VDD =3.5V; Cout =3.0V;
VDD =4.5V; Cout =0.5V;
VDD =3.5V; Dout =3.0V;
VDD =1.8V; Dout =0.5V;
VN=1.8V
R VND
VDD =1.8V; VN=0V
R VNG
VDD =3.5V; VN=3.5V
MIN
4.275
VC1-0.25
2.220
VD1-0.08
0.700
87.5
130
400
VDD−1.7
5.6
1.4
1.1
−2.0
1
150
2.5
2.5
100
50
TYP MAX
4.300 4.325
VC1-0.20 VC1-0.15
2.300 2.380
VD1 VD1+0.08
1.000
125.0
1.300
162.5
150 170
500 600
VDD −1.3 VDD −0.9
8.0 10.4
2.0 2.6
2.0 3.4
10 50
−1.3 −0.6
2 10
602 2,380
5.0 10.0
5.0 10.0
300 900
150 300
UNIT
V
V
V
V
s
ms
mV
mV
V
ms
ms
ms
μs
V
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
– 台灣類比科技股份有限公司 –
– Advanced Analog Technology, Inc. –
Page 11 of 25
V2.0
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet AAT8641.PDF ] | |
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