Battery Switch; Table 31: Test Switch Characteristics; Table 32: Ringing Battery Switch Characteristics - Alcatel MTK-40131 Datasheet And User Manual

Table 31: Test Switch Characteristics

Symbol Parameter
Iswoff switch leakage current
Vswon voltage drop over testswitch
Note:
The test switch is normally off when VDD is below the reset level.
If the battery voltages are sufficient, the switch remains on when it was
on before VDD went below the reset level.

Battery Switch

This switch is activated during ringing
or when the higher on-hook voltage is
selected (RNG=1). When active, BATR
is connected to the internal battery

Table 32: Ringing Battery Switch Characteristics

Symbol Parameter
Ibswoff(*) leakage current battery switch
(RNG=0)
Irevbats(*) reverse current BATS diode
(RNG=1)
Vdrbats forward drop BATS diode
Ibson current capability battery switch
Vbswon voltage drop over
battery switch (RNG=1)
Test Conditions
|Vssb-Vsb| < 72V
Isw=80mA
Isw=20mA
(VSSB-VSB > 0V)
supply line VBAT. In other cases
(RNG=0), the switch is open; VBAT is
now connected to BATS via an internal
diode.
Test Conditions
BATR=-72V, BATS=-32V
BATR=-72V, BATS=-32V
load current < 80mA
load current < 80mA
35
MTK-40131
Limits
Min. Typ. Max.
5
4 9
1 3
Limits
Min. Typ. Max.
5
5
0.85 1.2
0 80
1 2
Unit
uA
V
V
Unit
uA
uA
V
mA
V