S-8225AAA-TCT1U Datasheet, PDF (1/26 Pages) Seiko Instruments Inc – BATTERY MONITORING IC

S-8225A Series
www.sii-ic.com
© SII Semiconductor Corporation, 2012-2015
BATTERY MONITORING IC
FOR 3-SERIAL TO 5-SERIAL CELL PACK
Rev.1.7_02
The S-8225A Series includes high-accuracy voltage detection circuits and delay circuits, and can monitor the status of
3-serial to 5-serial cell lithium-ion rechargeable battery in single use. By switching the voltage level which is applied to the
SEL1 pin and SEL2 pin, users are able to use the S-8225A Series for 3-serial to 5-serial cell pack.
By cascade connection using the S-8225A Series, it is also possible to protect 6-serial or more cells lithium-ion rechargeable
battery pack.
 Features
• High-accuracy voltage detection function for each cell
Overcharge detection voltage n (n = 1 to 5)
3.5 V to 4.4 V (50 mV step)
Accuracy ±20 mV (Ta = +25°C), ±30 mV (Ta = 0°C to +60°C)
Overcharge release voltage n (n = 1 to 5)
3.3 V to 4.4 V^*1
Accuracy ±50 mV
Overdischarge detection voltage n (n = 1 to 5)
2.0 V to 3.2 V (100 mV step) Accuracy ±80 mV
Overdischarge release voltage n (n = 1 to 5)
2.1 V to 3.4 V^*2
Accuracy ±100 mV
• Overcharge detection delay time and overdischarge detection delay time can be set by external capacitor.
• Switchable between 3-serial to 5-serial cell by using the SEL1 pin and the SEL2 pin
• Cascade connection is available.
• The CO pin and the DO pin are controlled by the CTLC pin and the CTLD pin, respectively.
• Output voltage of the CO pin and the DO pin is limited to 12 V max.
• High-withstand voltage
Absolute maximum rating: 28 V
• Wide operation voltage range
4 V to 26 V
• Wide operation temperature range
Ta = −40°C to +85°C
• Low current consumption
During operation (V1 = V2 = V3 = V4 = V5 = 3.4 V) 22 μA max. (Ta = +25°C)
During power-down (V1 = V2 = V3 = V4 = V5 = 1.6 V) 4.5 μA max. (Ta = +25°C)
• Lead-free (Sn 100%), halogen-free
*1. Overcharge hysteresis voltage n (n = 1 to 5) is selectable in 0 V, or in 0.1 V to 0.4 V in 50 mV step.
(Overcharge hysteresis voltage = Overcharge detection voltage − Overcharge release voltage)
*2. Overdischarge hysteresis voltage n (n = 1 to 5) is selectable in 0 V to 0.7 V in 100 mV step.
(Overdischarge hysteresis voltage = Overdischarge release voltage − Overdischarge detection voltage)
 Application
• Lithium-ion rechargeable battery pack
 Package
• 16-Pin TSSOP
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