S-8249AAP-M6T1U Datasheet, PDF (7/22 Pages) Seiko Instruments Inc – VOLTAGE MONITORING IC WITH CELL BALANCING FUNCTION

Rev.1.2_00
VOLTAGE MONITORING IC WITH CELL BALANCING FUNCTION
S-8249 Series
 Electrical Characteristics
For details about the test circuits and testing method, refer to " Test Circuit".
Caution Unless otherwise specified in Table 8, set V2 = V3 = 0 V, and SWn (n = 1 to 4) = OFF.
Table 8 (1 / 2)
(Ta = +25°C unless otherwise specified)
Item
Symbol
Condition
Min. Typ. Max. Unit
Detection voltage
Cell balancing detection
voltage
V_BU
2.0 V ≤ V_BU < 2.4 V
SW1 = ON
2.4 V ≤ V_BU ≤ 4.6 V
V_BU −
0.012
V_BU ×
0.995
V_BU
V_BU
V_BU +
0.012
V
V_BU ×
1.005
V
Cell balancing release
voltage
V_BL
2.0 V ≤ V_BL < 2.4 V
SW1 = ON
2.4 V ≤ V_BL ≤ 4.6 V
V_BL −
0.024
V_BL ×
0.99
V_BL
V_BL
V_BL +
0.024
V
V_BL ×
1.01
V
Overcharge detection
voltage
V_CU
2.0 V ≤ V_CU < 2.4 V
2.4 V ≤ V_CU ≤ 4.6 V
V_CU −
0.012
V_CU
V_CU +
0.012
V
V_CU ×
0.995
V_CU
V_CU ×
1.005
V
Overcharge release
voltage
2.0 V ≤ V_CL < 2.4 V
V_CL
2.4 V ≤ V_CL ≤ 4.6 V
V_CL −
0.024
V_CL
V_CL +
0.024
V
V_CL ×
0.99
V_CL
V_CL ×
1.01
V
Temperature coefficient
Detection voltage
temperature coefficient 1^*1
ΔV_BU
ΔTa • V_BU
Ta
=
−40°C
to
+85°C^*3
−
100
350
ppm/
°C
Detection voltage
temperature coefficient 2^*2
ΔV_CU
ΔTa • V_CU
Ta
=
−40°C
to
+85°C^*3
−
100
350
ppm/
°C
Input voltage
Operation voltage between
VDD pin and VSS pin
V_DS
Voltages output from CO pin and
CB pin are fixed
1.5
−
5.0
V
_____
CE pin voltage "H"
V ^_____
CEH
−
−
−
V_DD ×
0.9
V
_____
CE pin voltage "L"
V ^_____
CEL
−
V_DD ×
0.1
−
−
V
DP pin voltage "H"
V_DPH
−
−
−
V_DD ×
0.9
V
DP pin voltage "L"
V_DPL
−
V_DD ×
0.1
−
−
V
Input current
Current consumption
during operation
I_OPE
I_VDD when V1 = V_BL − 0.1 V
−
1.2
2.0 μA
Current consumption
during power-saving
I_PSV
I_VDD when V1 = V2 = V_BL − 0.1 V
−
−
0.1 μA
*1. A change in the temperature of the detection voltage [mV/°C] is calculated by using the following equation.
ΔV_BU
ΔTa
[mV/°C] = VBU [V] ×
ΔV_BU
ΔTa • V_BU
[ppm/°C] ÷ 1000
*2. A change in the temperature of the detection voltage [mV/°C] is calculated by using the following equation.
ΔV_CU
ΔTa
[mV/°C] = VCU [V] ×
ΔV_CU
ΔTa • V_CU
[ppm/°C] ÷ 1000
*3. Since products are not screened at high and low temperature, the specification for this temperature range is
guaranteed by design, not tested in production.
Remark 1.
2.
3.
ΔV_BU
ΔTa
,
ΔV_CU
ΔTa
:
Change in temperature of detection voltage
V_BU, V_CU:
Set detection voltage
ΔV_BU
ΔTa • V_BU
,
ΔV_CU
ΔTa • V_CU
:
Detection
voltage
temperature
coefficient
7