Protection. AH8815 Datasheet

AH8815 Protection. Datasheet pdf. Equivalent

AH8815 Datasheet
Recommendation AH8815 Datasheet
Part AH8815
Description Protection
Feature AH8815; 13925292397_http://www.universe-micro.com/ AH8815 Protection IC for 5 Cells Li-ion Battery Pack FE.
Manufacture AnalogChipTech
Datasheet
Download AH8815 Datasheet




AnalogChipTech AH8815
13925292397_http://www.universe-micro.com/
AH8815
Protection IC for 5 Cells Li-ion Battery Pack
FEATURES
High Accuracy Voltage Detection
Over-Voltage Protection
o VOVP: 3.6V~4.35V (50mV/step)
o Accuracy: ±25mV
o Hysteresis voltage: 0V or 0.1V to
0.3V in 50mV/step
Under-Voltage Protection
o VUVP: 2.0V~3.0V (100mV/step)
o Accuracy: ±80mV
o Hysteresis voltage: 0V to 1V in
100mV/step
3-Levels Over-Current Detection
Level-1 Over-Current Protection:
o VOCP1: 25mV~350mV (25mV/step)
o Accuracy: ±10mV
Level-2 Over-Current Protection:
o VOCP2=3*VOCP1
o Accuracy: ±30mV
Short-Circuit Protection
o VSCP=5*VOCP1
o Accuracy: ±50mV
OC/SC release conditions:
Charger-Connected OR
Load-Opened
Built-in Over-Temperature Protection
Built-in Under-Temperature Protection
Delay times are set by external capacitors
Low-power Operating States:
Normal State: < 30uA
Standby State: < 3uA
Power-down State: < 1uA
Hardware Shut-down State: <0.1uA
16-Lead TSSOP Package
GENERAL DESCRIPTION
The AH8815 is a protection IC which includes high-
accuracy voltage detector and current detector to
provide Over-Voltage (OV), Under-Voltage (UV),
Over-Current (OC), Short-Circuit (SC), Over-
Temperature (OT), Under-Temperature (UT)
protection for 5-series Li-ion/polymer battery pack
used in power-tools, notebook PC applications etc.
The AH8815 provides a specific CTRL pin to
control both charge and discharge FET. When
CTRL is floating, the AH8815 will enter standby
state to save power consumption. Under standby
state, discharge FET is turned off while charge FET
is turned on. When CTRL is tied to VCC pin, the
AH8815 works in normal state, however, both
charge and discharge FET are turned off. When
CTRL is tied to VSS pin, the AH8815 works in
normal state, the state of charge and discharge
FET are decided according to safety events.
The AH8815 integrates FET driver. The AH8815
can drive the N-type charge FET and N-type
discharge FET at the PACK- side directly.
The AH8815 consumes less than 30uA in normal
state from VCC, and it reduces to less than 3uA in
standby state and less than 1uA in power-down
state. Furthermore, the AH8815 can be powered
from a switched supply, providing a technique to
reduce battery stack current draw to zero. This
device is packaged in a 16-pin TSSOP package.
APPLICATIONS
Power-Tools
Notebook PC/Tablet PC
UPS Backup Battery Systems
AnalogChipTech
http://www.universe-micro.com/
1



AnalogChipTech AH8815
13925292397_http://www.universe-micro.com/
AH8815
PRODUCT ORDING INFORMATION
Product Name
Product Name List
Product Name
AH8815AAFE
OV
Protection
Voltage
VOVP
± 4.25
0.025V
OV
Release
Voltage
VOVR
± 4.15
0.025V
UV
Protection
Voltage
VUVP
± 2.7
0.08V
UV
Release
Voltage
VUVR
± 3.0
0.08V
Level-1
DOC
Protection
Voltage
VDOCP1
± 0.1
0.01V
AH8815ABFE
AH8815ACFE
13925292397±4.20
0.025V
± 4.20
0.025V
± 4.10
0.025V
± 4.20
0.025V
± 2.5
0.08V
± 2.5
0.08V
± 3.0
0.08V
± 2.9
0.08V
± 0.1
0.01V
± 0.1
0.01V
AH8815ADFE
± 3.75
0.025V
± 3.55
0.025V
± 2.2
0.08V
± 2.7
0.08V
± 0.1
0.01V
AH8815AEFE
± 3.85
0.025V
± 3.55
0.025V
± 2.2
0.08V
± 2.7
0.08V
± 0.1
0.01V
AH8815AFFE
± 3.65
0.025V
± 3.65
0.025V
± 2.2
0.08V
± 2.7
0.08V
± 0.1
0.01V
Note: if a product with the required detection voltage does not appear in the above list, contact our sales
office.
______________________________________________________________________________________
AnalogChipTech
2
http://www.universe-micro.com/



AnalogChipTech AH8815
13925292397_http://www.universe-micro.com/
AH8815
PIN CONFIGURATION
PIN DESCRIPTION
PIN NAME
PIN DESCRIPTION
1 CFET Charge power FET control pin
2 VMON Voltage Monitor input pin to detect if the load is opened after over-current (OC) or
short-circuit (SC) occurs
3 DFET Discharge power FET control pin
4 CS Connection pin for current sensing resistor
5 CUVT Capacitor connection pin for under-voltage detection timer
6 COVT Capacitor connection pin for over-voltage detection timer
7
VSS
Ground pin
8 TS Connection pin for thermistor
9 VTHM External Thermistor bias output pin. This is a switched connection for supplying a
bias voltage from the internal voltage regulator to an external resistor network
composed of resistor and an external NTC resistor for measuring the temperature of
the battery module.
10 CTRL Control of charge FET and discharge FET or switch between normal state and
standby state
11
VC1
Connection for positive voltage of cell 1
12
VC2
Connection for positive voltage of cell 2
13
VC3
Connection for positive voltage of cell 3
14
VC4
Connection for positive voltage of cell 4
15
VC5
Connection for positive voltage of cell 5
16 VCC Power supply pin. Connection for positive voltage of cell 5.
______________________________________________________________________________________
AnalogChipTech
3
http://www.universe-micro.com/







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