EUP9261
(9)
Measurement Condition 9, Measurement Circuit 5
<Overcharge detection delay time, Overdischarge
detection delay time.>
The overcharge detection delay time (t
CU
) is the time
needed for V
CO
to change from “H” to “L” just after the V1
rapid increase within 10
µs
from the overcharge detection
voltage (V
CU
) - 0.2V to the overcharge detection voltage
(V
CU
) + 0.2V in the condition V2=0V. The overdischarge
detection delay time (t
DL
) is the time needed for V
DO
to
change from “H” to “L” just after the V1 rapid decrease
within 10µs from the overdischarge detection voltage
(V
DL
)+0.2V to the overdischarge detection voltage (V
DL
) .
0.2V in the condition V2=0V.
Set V1=3.5V and V2=0V. Increase V2 from 0V to 1.6V
momentarily (within 10µs). The time needed for V
DO
to go
“L” is the load short-circuiting detection delay time
(t
SHORT
).
Set V1=3.5V and V2=0V. Decrease V2 from 0V to 1.1V
momentarily (within 10µs). The time needed for V
CO
to go
“L” is the abnormal charge current detection delay time.
The abnormal charge current detection delay time has
the same value as the overcharge detection delay time.
(11)
Measurement Condition 11, Measurement Circuit 2
(Product with 0V battery charge function)
<0V battery charge starting charge voltage>
Set V1=V2=0V and decrease V2 gradually. The voltage
between VDD and VM when V
CO
goes ”H” (V
VM
+0.1V or
higher) is the 0V battery charge starting charger voltage
(V
0CHA
).
(10)
Measurement Condition 10, Measurement Circuit 5
<Overcurrent 1 detection delay time, Overcurrent 2
detection delay time , Load short – circuiting detection
delay time , Abnormal charge current detection delay
time. >
Set V1=3.5V and V2=0V. Increase V2 from 0V to 0.35 V
momentarily (within 10µs). The time needed for V
DO
to go
“L” is overcurrent 1 detection delay time (t
IOV1
).Set
V1=3.5V and V2=0V. Increase V2 from 0V to 0.7V
momentarily (within 10µs). The time needed for V
DO
to go
“L” is overcurrent 2 detection delay time (t
IOV2
).
(12)
Measurement Condition 12, Measurement Circuit 2
(Product with 0V battery charge inhibition function)
<0V battery charge inhibition battery voltage>
Set V1=0V and V2=4V. Increase V1 gradually. The voltage
between VDD and VM when V
CO
goes ”H” (V
VM
+0.1V or
higher) is the 0V battery charge inhibition battery voltage
(V
0INH
).
DS9261 Ver2.4 Jan. 2007
12
EUTECH [ EUTECH MICROELECTRONICS INC ]
