196DLC(2003) Ver la hoja de datos (PDF) - Vishay Semiconductors
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196DLC Datasheet PDF : 6 Pages
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Double Layer Capacitors
196 DLC
Vishay BCcomponents
DISCHARGE CHARACTERISTICS
Backup time of 196 DLC series capacitors depends on
minimum memory holding voltage and discharge current
(corresponding with the current consumption of the load).
For minimum backup times of standard and vertical
miniaturized series see Figs 9 and 10 (charging time
≥ 24 hours).
10 5
back up
time
(s)
10 4
MGA695
10 3
1
2
3
10 2
4
5
10
10 3
10 2
Curve 1: 1.0 F, 5.5 V.
Curve 2: 0.47 F, 5.5 V.
Curve 3: 0.22 F, 5.5 V.
Curve 4: 0.1 F, 5.5 V.
Curve 5: 0.047 F, 5.5 V.
Voltage drop from 5.0 to 3.5 V.
10 1
1
10
discharge current (mA)
Fig.9 Typical backup time as a function of discharge current.
10 6
back up
time
(s)
10 5
MGA696
10 4
1
2
10 3
3
10 2
10 3
10 2
Curve 1: 1.0 F, 5.5 V.
Curve 2: 0.47 F, 5.5 V.
Curve 3: 0.22 F, 5.5 V.
Curve 4: 0.1 F, 5.5 V.
Curve 5: 0.047 F, 5.5 V.
Voltage drop from 5.0 to 2.0 V.
4
5
10 1
1
10
discharge current (mA)
Fig.10 Typical backup time as a function of discharge current.
Figure 11 shows the backup time when a 196 DLC capacitor
is discharged by a constant resistance
(charging time ≥ 24 hours).
The horizontal axis shows the initial value of discharge
current if 5 V is connected to the capacitor via a fixed series
resistor.
EXAMPLE: 1 µA CORRESPONDS TO 5 MΩ AND 0.1 µA
CORRESPONDS TO 50 MΩ
The vertical axis shows that period of time during which the
voltage drops from 5 to 2 V.
103
backup
time
(h)
102
10
MLB203
1
2
3
4
5
1
10 2
10 1
1
10
10 2
10 3
initial value of discharge current (µA)
Curve 1: 1.0 F, 5.5 V.
Curve 2: 0.47 F, 5.5 V.
Curve 3: 0.22 F, 5.5 V.
Curve 4: 0.1 F, 5.5 V.
Curve 5: 0.047 F, 5.5 V.
Voltage drop from 5.0 to 2.0 V by means of a fixed resistor..
Fig.11 Typical backup time as a function of initial
discharge current.
Document Number: 28362
Revision: 17-Oct-03
For technical questions contact: aluminumcaps1@vishay.com
www.vishay.com
197
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