DataSheet.es AH8815 Hoja de datos PDF



PDF AH8815 Datasheet ( Hoja de datos )

Protection IC - AnalogChipTech

Número de pieza AH8815
Descripción Protection IC
Fabricantes AnalogChipTech 
Logotipo AnalogChipTech Logotipo
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AH8815 datasheet

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AH8815 pdf
13925292397_http://www.universe-micro.com/
AH8815
TYPICAL APPLICATION DIAGRAM
Figure 1, Typical Application Diagram for 5-series cell with N-type Charge-FET & Discharge-FET
ABSOLUTE MAXIMUM RATINGS
Over operating free-air temperature range (unless otherwise noted)
PARAMETER
Input Voltage between VCC and VSS
Low-voltage Input pin Voltage
High-voltage Input pin Voltage
VMON pin Input Voltage
SYMBOL
VCC
VIN_LV
VIN_HV
VVMON
APPLICABLE PIN
VCC
CS, CUVT, COVT, TS,
VTHM
CTRL, SEL
VMON
- RATING
VSS 0.3V to VSS+35V
-VSS 0.3V to VSS +5.5V
-VSS 0.3V to VSS+35V
-VSS 5.5V to VCC+0.3V
Cell voltage input voltage:
VC(n) to VC(n-1), n=2 to 5;
VC1 to VSS
CFET pin output voltage
DFET pin output voltage
HBM ESD rating
Operating free-air temperature range
Storage temperature range
VCELL
VCFET
VDFET
TA
TSTG
VC5, VC4, VC3, VC2,
VC1
CFET
DFET
-0.3V to +7.0V
-VCC 35V to VCC+0.3V
-0.3V to +15V
±2kV
-40°C to +85°C
-40°C to +125°C
Package thermal resistance (TSSOP16)
θ
JA
48.7°C/W
Note 1: Human Body Model (HBM) to Specification MIL-STD-883 Method 3015.7
Note 2: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the
Recommended Operating Conditions are not implied. Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
______________________________________________________________________________________
AnalogChipTech
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AH8815 arduino
13925292397_http://www.universe-micro.com/
AH8815
Delay time setting
The over-voltage protection delay time (tOVP),
temperature detection period time (tTDET) are
determined by the external capacitor connected to
COVT pin. The under-voltage protection delay time
(tUVP), the under-voltage power-down delay time
(tUV_PD) and level-1/2 over-current protection delay
time (tDOCP1 and tDOCP2) are determined by the
external capacitor connected to CUVT pin. Short-
Circuit detection delay time (tSCP) is fixed internally
to be 250uS (typical).
Min. Typ. Max.
tOVP [s] = (7.00, 10.0, 13.0) x CCOVT [uF]
tTDET [s] = (5.00, 10.0, 15.0) x CCOVT [uF]
tUVP [s] = (7.00, 10.0, 13.0) x CCUVT [uF]
tUV_PD [s] = (35.0, 55.0, 75.0) x CCUVT [uF]
tDOCP1 [s] = (7.00, 10.0, 13.0) x CCUVT [uF]
tDOCP2 [s] = (0.70, 1.00, 1.30) x CCUVT [uF]
CTRL pin
is open, no current will flow through the 4.3M and
5.6M resistor, TP0610K will be completely shut off
to reduce total supply current of AH8815 to less
than 1nA. If the switch is on, TP0610K will be
turned on.
VCC
10 TP0610k
IN4148
AH8815
VSS
Switch
BAT+
cell5
cell4
cell3
cell2
cell1
BAT-
Figure 4, Hardware shutdown circuit
The AH8815 has control pin. The CTRL pin is used
to control the CFET and DFET pin output voltages.
The CTRL pin takes precedence over the battery
protection circuit. When the CTRL pin is high level,
13925292397both the charging and discharging FETs are turned
off. When CTRL pin is low level, the charging and
discharging FETs are controlled by the voltage
detector. When CTRL pin is floating, the AH8815
enters standby status. In standby status, almost all
the circuits of the AH8815 stop and the current
consumption is IVCC_STDBY or lower. This feature
provides the possibility for the battery pack to save
power even if the battery pack is at full capacity,
thus long storage time is available. Under standby
status, discharging FET is turned off, however,
when a charger is connected, the charging FET will
be turned on, thus make sure that the charger is
not connected under standby status.
Table 1, conditions set by CTRL pin
CTRL pin
CFET pin
DFET pin
High
Open
Low
Source 10uA
VSS
Hi-Z
VSS
Normal status*1 Normal status*1
*1. The status is controlled by the voltage detector
Hardware Shutdown
To completely shut down the AH8815, a PMOS
switch can be connected to VCC, or VCC can be
driven from an isolated power supply. Figure 4
shows an example of a switched VCC. If the switch
______________________________________________________________________________________
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