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PROTECTION IC. EC9522T Datasheet

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PROTECTION IC. EC9522T Datasheet
















EC9522T IC. Datasheet pdf. Equivalent













Part

EC9522T

Description

LI-ION PROTECTION IC



Feature


www.DataSheet4U.com LI-ION PROTECTION I C EC9522T Ver2.4 2004 / 05 Features L ow supply current High accuracy detecto r Threshold Supply current Standby curr ent (after detecting over-discharge) Ov er-charge detector(Topt=25ºC) Over-cha rge detector (Topt=0 to 50ºC) Over-dis charge detector Variety of detector thr eshold Built in protection circuit Outp ut delay of over cha.
Manufacture

E-CMOS

Datasheet
Download EC9522T Datasheet


E-CMOS EC9522T

EC9522T; rge Output delay of over-discharg Small package Note1: The result was measured from EC9522T0001 Over-charge detector t hreshold Over-discharge detector thresh old Excess current protection Accuracy Time delay at VDD=4.3V VDD=2.4V with bu ilt-in capacitor TYP. 3.5uA TYP. 0.25uA +/- 50mV +/- 60mV +/- 3.0% 4.0V to 4.4 V step of 0.005V 2.0V to 3.0V step of 0 .005V 0.04V to 0.3.


E-CMOS EC9522T

2V step of 0.04V ±20% 1.2S note1 10mS S OT23-6/6-pin Part Number Examples Part No. EC9522T003 *note2 Over charge dete ction voltage 4.30V . Over charge relea se voltage 4.10V . marking E21-… Pack type SOT-23-6 . Note2: New model versi on and specific characteristics may be order by customer. General Description The EC9522T is protection IC for over- charge/discharge of .


E-CMOS EC9522T

rechargeable one-cell Lithium-ion(Li+) e xcess load current, further include a s hort circuit protector for preventing l arge external short circuit current. Ea ch of these IC is composed of three vol tage detectors, a reference unit, a del ay circuit, a short circuit protector, and a logic circuit. When charging volt age crosses the detector threshold from a low value to va.





Part

EC9522T

Description

LI-ION PROTECTION IC



Feature


www.DataSheet4U.com LI-ION PROTECTION I C EC9522T Ver2.4 2004 / 05 Features L ow supply current High accuracy detecto r Threshold Supply current Standby curr ent (after detecting over-discharge) Ov er-charge detector(Topt=25ºC) Over-cha rge detector (Topt=0 to 50ºC) Over-dis charge detector Variety of detector thr eshold Built in protection circuit Outp ut delay of over cha.
Manufacture

E-CMOS

Datasheet
Download EC9522T Datasheet




 EC9522T
www.DataSheet4U.com
LI-ION PROTECTION IC
EC9522T
Ver2.4 2004 / 05
Features
Low supply current
Supply current
TYP. 3.5uA
Standby current (after detecting over-discharge) TYP. 0.25uA
High accuracy detector
Over-charge detector(Topt=25ºC)
+/- 50mV
Threshold
Over-charge detector (Topt=0 to 50ºC)
+/- 60mV
Over-discharge detector
+/- 3.0%
Variety of detector threshold Over-charge detector threshold
4.0V to 4.4V step of 0.005V
Over-discharge detector threshold 2.0V to 3.0V step of 0.005V
Built in protection circuit
Excess current protection
0.04V to 0.32V step of 0.04V
Accuracy
±20%
Output delay of over charge Time delay at VDD=4.3V
1.2S note1
Output delay of over-discharg
VDD=2.4V with built-in capacitor
10mS
Small package
SOT23-6/6-pin
Note1: The result was measured from EC9522T0001
Part Number Examples
Part No.
Over charge detection
voltage
EC9522T003
*note2
4.30V
….
Note2: New model version and specific
characteristics may be order by customer.
Over charge release
voltage
4.10V
….
marking
E21-…
Pack type
SOT-23-6
….
General Description
The EC9522T is protection IC for over-charge/discharge of rechargeable one-cell
Lithium-ion(Li+) excess load current, further include a short circuit protector for preventing large
external short circuit current.
Each of these IC is composed of three voltage detectors, a reference unit, a delay circuit, a
short circuit protector, and a logic circuit. When charging voltage crosses the detector threshold
from a low value to value higher than VDET1, the output of Cout pin, the output of over-charge
detector/VD1, switches to low level, charger’s negative pin level. After detecting over-charge the
VD1 can be reset and the output of Cout becomes high when the VDD voltage is coming down to a
level lower than “VREL1”, or when a kind of loading is connected to VDD after a charger is
disconnected from the battery pack while the VDD level is in between “VDET1” and “VREL1” in
the EC9522T.
The output of Dout pin, the output of over-discharge detector/VD2, switches to low level after
internally fixed delay time passed, when discharging voltage crosses the detector threshold from a
high value lower than VDET2. After EC9522T detect the over-discharge voltage, connect a charger
Page 1 of 8




 EC9522T
LI-ION PROTECTION IC
EC9522T
Ver2.4 2004 / 05
to the battery pack, and when the battery supply voltage becomes higher than the over-discharge
detector threshold, VD2 is released and the voltage of Dout becomes “H” level.
An excess load current can be sensed and cut off after internally fixed delay time passed
through the built in excess current detector, VD3 with Dout being enabled to low level. Once after
detecting excess current, the VD3 is released and Dout level switches to high by detaching a battery
pack from a load system.
Further, short circuit protector makes Dout level to low immediately with external short circuit
current and re-moving external short circuit leads Dout level to high. After detecting
over-discharge, supply current will be kept extremely low by halt some internal circuits operation.
The output delay of over-charge detectors can be set by connecting external capacitors. Output type
of Cout and Dout are CMOS. 6-pin, SOT23-6 is available.
BLOCK DIAGRAM
Page 2 of 8




 EC9522T
LI-ION PROTECTION IC
Pin Configurations
EC9522T
Ver2.4 2004 / 05
PIN DESCRIPTION
Pin No.
1
2
3
4
5
6
Symbol
Dout
V-
Cout
Ct
VDD
Vss
Pin description
Output of over-discharge detection, CMOS output
Pin for charge negative input
Output of over-charge detection, CMOS output
Pin for external capacitor setting output delay of VD1
Power supply
Ground
ABSOLUTE MAXIMUM RATINGS
Symbol
VDD
V-
Vct
Vcout
Vdout
PD
Topt
Tstg
Item
Supply voltage
Input voltage
V- pin
Ct pin
Output voltage
Cout pin
Dout pin
Power dissipation
Operating temperature range
Storage temperature range
Ratings
-0.3 to 20
VDD-20 to VDD+0.3
Vss-0.3 toVDD+0.3
VDD-20 to VDD+0.3
Vss-0.3 toVDD+0.3
150
-40 to85
-55 to 125
Vss=0V
Unit
V
V
V
V
V
mW
ºC
ºC
Absolute Maximum ratings are threshold limit values that must not be exceeded ever for an instant
under any conditions. Moreover, such values for any two items must not be reached simultaneously.
Operation above these absolute maximum ratings may cause degradation or permanent damage to
the device. These are stress ratings only and do not necessarily imply functional operation below
these limits.
Page 3 of 8




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