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PDF AAT8636 Data sheet ( Hoja de datos )
| Número de pieza | AAT8636 | |
| Descripción | ONE-CELL LI-ION BATTERY PROTECTION IC | |
| Fabricantes | AAT | |
| Logotipo |  |
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Advanced Analog Technology, Inc.
Details are subject to change without notice
AAT8636 Series
ONE-CELL LI-ION BATTERY PROTECTION IC
FEATURES
GENERAL DESCRIPTION
• Ideal for One-Cell Rechargeable Li-Ion Battery
The AAT8636 series are protection ICs designed
Pack.
to safeguard one-cell rechargeable Li-Ion battery
• Low Current Consumption
3.0µA …………..Supply Current (Typical)
0.1µA …………..Standby Current
pack against over charge, over discharge, over
current, and short circuit. The AAT8636 series
use advanced high voltage CMOS process to
• High Withstand Voltage
Absolute Maximum Ratings..22V ( VDD − VN )
• High Accuracy Voltage Detection
provide high accuracy voltage detection and low
current consumption.
The AAT8636 series incorporate a reference unit
Over Charge Detector…………... ± 20mV
and three voltage detectors. During the charging
Over Discharge Detector………. ± 2.5%
process, when the cell voltage ( VDD ) is charged to
• Over Current and Short Circuit Protection
a value higher than the over charge threshold
•
Wide Operating Temperature Range − 40o C
www.DataSheet4U.com
to voltage
( VC1),
the
over
charge
detector
(COM1)
85o C
will switch the output pin ( COUT ) to a low level
• Ultra Small Package……..SOT26
within a delay time ( t C1 ), and thus turning off the
PIN CONFIGURATION
MOSFET connected to the charging path. The
COUT pin may change to high level again when
the VDD voltage falls below “ VC1 − VHYS ”, or
when VDD falls below VC1 while the charger is
disconnected from the battery pack.
DOUT
During the discharging process, when the VDD
GND
drops to a value lower than the over-discharge
threshold voltage ( VD1 ), the over-discharge
VN VDD detector (COM2) will switch DOUT to low level
within a delay time ( t D1 ), and thus turning off the
COUT Cext MOSFET connecting to the discharging path. In
the mean time, the AAT8636 series will enter a
low current standby mode. Once into standby
mode, the systems can only be released from
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– Advanced Analog Technology, Inc. –
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Advanced Analog Technology, Inc.
AAT8636 Series
ELECTRICAL CHARACTERISTICS
•AAT8636A
Toper =25
Symbol
Item
Conditions
Min Typ Max Unit
VDD1 Operating Input Voltage
Voltage Defined as
VDD − GND
1.5
10.0 V
VC1
Detect Rising Edge of Supply
Over Charge Threshold Voltage
4.33
4.35
4.37 V
Voltage
VHYS Over Charge Threshold
Hysteresis Range
t C1 Over Charge Delay Time
0.15 0.20 0.25 V
C3 = 0.01µF , VDD =3.6V to
60 75 90 ms
4.4V
VD1 Over Discharge Threshold
Voltage
t D1 Over Discharge Delay Time
Detect Falling Edge of
Supply Voltage
VDD =3.6V to 2.4V
2.437
7
2.500
10
2.563
13
V
ms
VOC Over Current Detection
Voltage
Detect Rising Edge of VN
0.17 0.20 0.23 V
Pin Voltage
t OC Over Current Detection Delay VDD =3.0V
Time
Vshort Short Circuit Detection Voltage VDD =3.0V
9 13 17 ms
VDD −1.2 VDD − 0.9 VDD − 0.6 V
tshort Short Circuit Detection Delay VDD =3.0V
Time
5 50 µs
Rshort Reset Resistance for Over
Current Protection
VOL1 Nch ON Voltage of COUT
VOH1 Pch ON Voltage of COUT
VOL2 Nch ON Voltage of DOUT
VOH2 Pch ON Voltage of DOUT
IDD Supply Current
Is tan dby Standby Current
VDD =3.6V, VN=1.0V
IOL =50 µA , VDD =4.4V
IOH = − 50 µA , VDD =3.9V
IOL =50 µA , VDD =2.4V
IOH = − 50 µA , VDD =3.9V
VDD =3.9V,VN =0V
VDD =2.0V
50
3.4
3.4
100 150 kΩ
0.35 0.50 V
3.7 V
0.2 0.5 V
3.7 V
3.0 5.0 µA
0.1 µA
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– Advanced Analog Technology, Inc. –
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5 Page 
Advanced Analog Technology, Inc.
PACKAGE DIMENSION
AAT8636 Series
––
– Advanced Analog Technology, Inc. –
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11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AAT8636.PDF ] | |
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