s-8204a Seiko Instruments Inc., s-8204a Datasheet - Page 17

• Manufacturer Part Number: s-8204a
• Description: Battery Protection Ic For 3-series Or 4-series Cell Pack
• Manufacturer: Seiko Instruments Inc.

Rev.1.3
9. CTLC and CTLD Pins
10. SEL pin
The S-8204A Series has two pins to control. The CTLC pin controls the output voltage from the COP pin,
the CTLD pin controls the output voltage from the DOP pin. Thus it is possible for users to control the
output voltages from the COP pin and DOP pin independently. These controls precede the battery
protection circuit.
Caution Note that when the power supply fluctuates, unexpected behavior might occur if an
The S-8204A Series has a pin to switch-control the protection for 3-cell or 4-cell battery. The
overdischarge detection for V4-cell is inhibited by setting the SEL pin “L”, so that short-circuiting the V4
cell does not allow the overdischarge detection. This setting makes it possible to use the S-8204A Series
for 3-cell protection. The SEL pin precedes the battery protection circuit. Be sure to use the SEL pin in “H”
or “L”.
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electrical potential is generated between the potentials of “L” level input to the
CTLC/CTLD pins and IC’s V
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
*1. High; CTLC ≥ V
*2. Pulled down by I
*3. Low; CTLC ≤ V
*4. The status is controlled by the voltage detection circuit.
*1. High; CTLD ≥ V
*2. Pulled down by I
*3. Low; CTLD ≤ V
*4. The status is controlled by the voltage detection circuit.
*1. High; SEL ≥ V
*2. Low; SEL ≤ V
Table 7 Protect Conditions Set by SEL Pin
Table 5 Conditions Set by CTLC Pin
Table 6 Conditions Set by CTLD Pin
CTLC Pin
CTLD Pin
SEL Pin
Open
Open
High
High
Low
Low
High
Open
Low
*3
*2
*2
*1
*1
Seiko Instruments Inc.
*1
*2
*4
SS
by external filters R
SELL
SELH
CTLCH
CTLD
CTLCH
CTLD
CTLCL
CTLDL
Protect Condition
High impedance
High impedance
4-cell protection
3-cell protection
Normal status
Normal status
COP Pin
DOP Pin
V
V
Indefinite
DD
DD
level
level
VSS
and C
*4
*3
VSS
.
S-8204A Series
17