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11
KX-TG9581B/KX-TG9582B/KX-TGA950B
4.2.2.1.
Power Supply(2.8V): DC-OUT
The power supply(2.8V) is converted from 5.5VDC from AC adaptor by IC901,Q903, L901.
4.2.2.2.
Switch curcuit for Battery power supply.
IC906 is a switch IC between Main power supply(from AC adaptor) and Battery power supply.
When having Power failure then disconnecting Main power supply DC-OUT goes down and IC906 becomes ON by IC904
to recover VBAT from Battery power supply.
On the other hand IC906 goes OFF when DC-OUT goes Up.
For switching by IC906, it is controlled by IC904, which is a voltage detector IC.
IC906(Pin4) is a control PIN, High is "ON", Low is "OFF".
Therefore this model can operate in electoric power failure state by battely inserted in base.
Note:
Both alkaline batteries and rechargeable batteriescan be used for the base unit, but we recommend that you use the charged
batteries (supplied).
4.2.2.3.
Power supply(1.8V) :VDD1
This power supply consist of IC601and Q606 for CPU CORE and Memory on BBIC IC601.
C921
10u
R904
47
Q903
1
G
2
S
3
A
4
K
5
D
IC901
1
CE/CSS
2
VSS
3
FB
5
VIN
4
EXT/
R906
47
C913
1000p
R920
6.8k
C909
22u
R919
15k
C908
NC
C915
2200p
L901
10u
V_IN
C912
0.01u
C920
10u
2.8V
0.9V
D1001
C921
10u
R904
4
7
R969
1k
C950
NC
Q903
1
G
2
S
3
A
4
K
5
D
C917
NC
R978
47k
Q956
4.7k
47k
IC901
1
CE/CSS
2
VSS
3
FB
5
VIN
4
EXT/
TP_FLG
C9
10
NC
C916
470u
R906
47
C913
1000p
R920
6.8k
C909
22u
C922
0.1u
C956
470u
R919
15k
C908
NC
C915
2200p
R916
NC
ACF
L901
10u
V_IN
IC904
1
VOUT
2
VIN
3
NC
4
VSS
DC_OUT
C912
0.01u
Batt_PW_EN
R911 NC
C920
10u
Q957
4.7k
47k
M_+3.0V
C905
NC
C924
1u
C923
1u
IC906
1
VOUT
2
VSS
4
CE
5
VIN
3
FLG
R914
120
R921 1k
R915
680
R967
1M
CMOS_OUT
2.8V
0.9V
DET at 2.2V
Q606
C613
1u
R613
10k
C612
K0.1u
VBAT
M_+1.8V
VDD1
C618
NC
C619
10p
RFP0n
C3
RFP1
A2
RFP2
E3
RF_SUPPLY1
A7
RF_SUPPLY2
M3
LDO_CTRL
A6
RF_SUPPLY_PA
A8
LDORF_CTRL
M5
VBAT
C617
1u
VBAT
C614 1u
VBAT
Содержание KX-TGA950B
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