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Part: S-8233BSeries
Category:
Power Management
-> Battery Management
-> Battery Protection
-> Lithium-Ion Rechargeable Battery Protection
Description: Function = For 3-cell ;; Overcharge Detection Voltage (Accuracy) = 3.8-4.4 V (±25 MV) ;; Overdischarge Detection Voltage (Accuracy) = 2.0-2.8 V (±80 MV) ;; Overcurrent Detection Voltage 1 (Accuracy) = 0.15-0.5 V (±10%) ;; Overcharge Detection Delay Time = 1.0s (C=0.47 UF) ;; Package (Power Dissipation) = 16-pin Tssop (300 MW)
Company: Seiko Instruments
Datasheet: Download S-8233BSeries datasheet File size : 4 kB
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Datasheet text preview:
Rev.3.1_00
BATTERY PROTECTION IC (FOR A 3-SERIAL-CELL PACK)
S-8233B SERIES
The 8233B is a series of lithium-ion rechargeable battery protection ICs incorporating high-accuracy (±25 mV) voltage detection circuits and delay circuits. It is suitable for a 3-serial-cell lithium-ion battery pack.
Features
(1) Internal high-accuracy voltage detection circuit Over charge detection voltage Over charge release voltage 3.80 ± 0.025 V to 4.40 ± 0.025 V 5 mV - step 3.45 ± 0.100 V to 4.40 ± 0.100 V 5 mV - step (The over charge release voltage can be selected within the range where a difference from over charge detection voltage is 0 to 0.35 V with 50 mV - step) Over discharge detection voltage Over discharge release voltage 2.00 ± 0.08 V to 2.80± 0.08 V 50 mV - step 2.00 ± 0.10 V to4.00± 0.10 V 50.mV - step (The over discharge release voltage can be selected within the range where a difference from over discharge detection voltage is 0 to 1.2V with 50 mV - step) Over current detection voltage 1 0.15 V ±10% to 0.50 V ±10% 50 mV - step (2) (3) (4) (5) (6) (7) (8) High input-voltage device (absolute maximum rating: 26 V) Wide operating voltage range: 2 V to 24 V The delay time for every detection can be set via an external capacitor. Three over current detection levels (protection for short-circuiting) Internal charge/discharge prohibition circuit via the control terminal The function for charging batteries from 0 V is available. Low current consumption Operation Power-down (9) 50µA max. (+25°C) 0.1µA max. (+25°C)
16-pin TSSOP package
Applications
Lithium-ion rechargeable battery packs
Seiko Instruments Inc.
1
Battery Protection IC(for a 3-serial-cell pack) S-8233B Series
Rev.3.1_00
Selection Guide
Table1
Model/Item Over charge detection voltage S-8233BAFT 4.225±0.025V S-8233BBFT 4.325±0.025V Over charge Over discharge Over discharge release voltage *1 4.10±0.10V detection voltage 2.30±0.08V 2.30±0.08V 2.70±0.10V 2.70±0.10V release voltage Over current detection voltage1 0.20V±10% 0.20V±10% 0V battery charging function Available Unavailable normal reverse Conditioning function CTL logic
*1) Without over charge detection / release hysteresis. *2) The input voltage of CTL for normal condition is changed by the CTL logic. (Please refer description). Change in the detection voltage is available in products other than the above listed ones. Contact the SII Semiconductor Products Sales Department.
2
Seiko Instruments Inc.
Rev.3.1_00
Battery Protection IC(for a 3-serial-cell pack) S-8233B Series
Block Diagram
VCC
Ref e r enc e voltage 1
Over current 2,3 delay circuit
Over current detec ti on circuit
VMP
+ -
CD1
Battery 1 Over charge
+ - Batter y 1 Over discharge
Over current,P delay circuit
COVT
VC1
Batter y 1 Over charge + - Batter y 2 Over charge
Over discharge delay circuit
CDT
Control Logic
Over charge delay circuit
CD2
+ - Batter y 2 Over discharge
CCT
Ref e r enc e voltage 2
VC2
Batter y 2 Over charge + - Batter y 3 Over charge
DOP
CD3
+ Batter y 3 Over discharge Ref e r enc e voltage 3 -
COP
VSS
Batter y 3 Over charge
Floating detection circuit
CTL
Figure 1
The delay time for over current detection 2 and 3 is fixed by an internal IC circuit. The delay time cannot be changed via an external capacitor.
Seiko Instruments Inc.
3
Others parts begin by s0
S0-1 S0-2 S0-3 S0-4 S0-5 S0-6 S0-7 S0-8 S0-9 S0-10 S0-11 S0-12 S0-13 S0-14 S0-15 S0-16 S0-17 S0-18 S0-19 S0-20 S0-21 S0-22 S0-23
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