S-8424AAAFT-TB-X Datasheet, PDF (35/46 Pages) Seiko Instruments Inc – BATTERY BACKUP SWITCHING IC

Rev.3.0_01
BATTERY BACKUP SWITCHING IC
S-8424A Series
2. Voltage Detector
2.1 CS Voltage Detector (−V_DET1 = 3.3 V)
(1) Detection voltage (−V_DET1) temperature
characteristics
20
(2) Output current (I_SINK) characteristics
30
10 Based on CS (−VDET1) voltage when Ta is 25°C
0
25 _{Ta = 25°C}
20
15
VIN = 3 V
−10
−20
−40 −20 0 20 40 60 80 100
Ta (°C)
(3) Output current (I_SINK) temperature characteristics
10
10
5
0
0.0
VIN = 1.7 V
1.0
2.0
3.0
4.0
VDS (V)
8
VIN = VBAT = 2.0 V, V DS = 0.5 V
6
4
2
0
−40 −20
0 20 40
Ta ( °C)
60 80 100
2.2 RESET Voltage Detector (−V_DET2 = 2.2 V)
(1) Detection voltage (−V_DET2) temperature
characteristics
20
Based on RESET (−VDET2) voltage
10
when Ta is 25°C
0
(2) Output current (I_SINK) characteristics
30
25 _{Ta = 25°C}
20
15
VIN = 3 V
−10
−20
−40 −20 0 20 40 60 80 100
Ta ( °C)
(3) Output current (I_SINK) temperature characteristics
10
10
5
0
0.0
VIN = 1.7 V
1.0
2.0
3.0
4.0
VDS (V)
8
VIN = VBAT = 2.0 V, VDS = 0.5 V
6
4
2
0
−40 −20 0
20 40 60 80 100
Ta (°C)
35