S-8245D PROTECTION Datasheet

S-8245D Datasheet, PDF, Equivalent


Part Number

S-8245D

Description

BATTERY PROTECTION

Manufacture

ABLIC

Total Page 30 Pages
Datasheet
Download S-8245D Datasheet


S-8245D
S-8245B/D Series
www.ablic.com
© ABLIC Inc., 2018
BATTERY PROTECTION IC
FOR 3-SERIAL TO 5-SERIAL CELL PACK
Rev.1.4_00
The S-8245B/D Series is a protection IC for 3-serial to 5-serial cell lithium-ion rechargeable batteries, which includes
high-accuracy voltage detection circuits and delay circuits. It is suitable for protecting 3-serial to 5-serial cell lithium-ion
rechargeable battery packs from overcharge, overdischarge, and overcurrent.
Connecting an NTC, it allows for the temperature detection at four different points: high temperature detection during
charging, low temperature detection during charging, high temperature detection during discharging, and low temperature
detection during discharging.
Features
High-accuracy voltage detection for each cell
Overcharge detection voltage n (n = 1 to 5):
Overcharge release voltage n (n = 1 to 5):
3.550 V to 4.600 V (50 mV step)
3.150 V to 4.600 V*1
Accuracy 20 mV
Accuracy 50 mV
Overdischarge detection voltage n (n = 1 to 5):
Overdischarge release voltage n (n = 1 to 5):
2.000 V to 3.200 V (100 mV step)
2.000 V to 3.400 V*2
Accuracy 80 mV
Accuracy 100 mV
Three-level discharge overcurrent detection:
Discharge overcurrent 1 detection voltage:
0.020 V to 0.300 V (10 mV step)
Accuracy 10 mV
Discharge overcurrent 2 detection voltage:
0.040 V to 0.500 V (20 mV step)
Accuracy 15 mV
Load short-circuiting detection voltage:
0.100 V to 1.000 V (25 mV step)
Accuracy 50 mV
Charge overcurrent detection:
Charge overcurrent detection voltage:
0.300 V to 0.020 V (10 mV step)
Accuracy 10 mV
Each delay time is settable by an external capacitor
(Load short-circuiting detection delay time and temperature detection delay time are internally fixed)
Independent control of charge inhibition, discharge inhibition, and power-saving by each control pin
0 V battery charge function is selectable:
Available, unavailable
Power-down function is selectable:
Available, unavailable
CIT pin internal resistance value is selectable:
831 ktyp., 8.31 Mtyp.
CO and DO pin output voltage is limited to 15 V max. respectively
Switching control for 3-serial to 5-serial cell is possible by inputting voltage to the SEL1 pin and the SEL2 pin
Temperature detection is possible at four different points by connecting an NTC
High temperature detection ratio during charging / discharging: 0.600 to 0.900 (0.005 step) Accuracy 0.005
Low temperature detection ratio during charging / discharging: 0.030 to 0.400 (0.005 step) Accuracy 0.005
High-withstand voltage:
Absolute maximum rating 28 V
Wide operation voltage range:
5 V to 24 V
Wide operation temperature range:
Ta = 40C to 85C
Low current consumption
During operation:
20 A max. (Ta = 25C)
During power-down:
0.5 A max. (Ta = 25C)
During power-saving:
0.1 A max. (Ta = 25C)
Lead-free (Sn 100%), halogen-free
*1. Overcharge release voltage = Overcharge detection voltage Overcharge hysteresis voltage
(Overcharge hysteresis voltage n (n = 1 to 5) is selectable in 0 V to 0.4 V in 50 mV step)
*2. Overdischarge release voltage = Overdischarge detection voltage Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage n (n = 1 to 5) is selectable in 0 V to 0.7 V in 100 mV step)
Application
Lithium-ion rechargeable battery pack
Package
24-Pin SSOP
1

S-8245D
BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK
S-8245B/D Series
Block Diagram
Rev.1.4_00
VDD
VC1
VC2
VC3
VC4
VC5
VSS
SEL1
SEL2
VINI
Overcharge 1
Overdischarge 1
Overcharge 2
Overdischarge 2
Overcharge 3
Overdischarge 3
Overcharge 4
Overdischarge 4
Control circuit
Overcharge 5
Overdischarge 5
Discharge
overcurrent 1
Discharge
overcurrent 2
Load
short-circuiting
Charge
overcurrent
Remark Diodes in the figure are parasitic diodes.
2
Figure 1
Temperature detection circuit
TH
Voltage regulator
VREG
CTLC
CTLD
PSI
CCT
CDT
CIT
CIT2
CICT
CO pin output voltage
limit circuit
DO pin output voltage
limit circuit
CO
DO
RVMD
RVMS
PSO
VM


Features S-8245B/D Series www.ablic.com © ABLIC Inc., 2018 BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK Rev.1.4_ 00 The S-8245B/D Series is a protectio n IC for 3-serial to 5-serial cell lith ium-ion rechargeable batteries, which i ncludes high-accuracy voltage detection circuits and delay circuits. It is sui table for protecting 3-serial to 5-seri al cell lithium-ion rechargeable batter y packs from overcharge, overdischarge, and overcurrent. Connecting an NTC, it allows for the temperature detection a t four different points: high temperatu re detection during charging, low tempe rature detection during charging, high temperature detection during dischargin g, and low temperature detection during discharging.  Features  High-a ccuracy voltage detection for each cell Overcharge detection voltage n (n = 1 to 5): Overcharge release voltage n (n = 1 to 5): 3.550 V to 4.600 V (50 mV step) 3.150 V to 4.600 V*1 Accuracy 20 mV Accuracy 50 mV Overdischarge detection voltage n (n = 1 to 5).
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