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SI9731 データシート(PDF) 7 Page - Vishay Siliconix

部品番号 SI9731
部品情報  UP Controlled Battery Charger For 1-Cell Li-ion or 1-Cell to 3-Cell NiCd/NiMH Batteries
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メーカー  VISHAY [Vishay Siliconix]
ホームページ  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI9731 データシート(HTML) 7 Page - Vishay Siliconix

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Document Number: 71321
S-60869-Rev. B, 22-May-06
www.vishay.com
7
Vishay Siliconix
Si9731
BLOCK DIAGRAM AND TYPICAL APPLICATION CIRCUIT
Figure 1.
Temp
Sensor
+
1
CHARGERPRESENTIN
2
CHARGERPOWER_ONIN
4
ON/OFF
3
VCHARGER
100 k
Ω
1 M
Ω
+
CIN
2.2
μfd
2.6 V
+
12.8 V
+
5
TRICKLECHARGEEN
6
CVMODE
7
MAINCHARGEEN
UVL
Latch
Circuit
Power
OK to Charge
(OTC)
+
+
3.4 V
5 V
Q3
16
CHARGERPRESENT
Q4
15
CHARGERPOWER_ON
14
56
Ω
Trickle
Charge
Q2
COUT
2.2
μfd
B
a
t
t
e
r
y
VBAT
Trickle_VBAT
13
Fast
Charge
Q1
RFB1
RFB2
RFB3
4.1 V_TAP
12
11
GND
Digital
Analog
Temp
OK
+
0.1
μfd
9
VREF
Ref
Voltage
1.3 V
E/A
Q5
Enable
10
8
N/C
N/C
OVP
Battery Over
Voltage
Battery Min Voltage
VBAT+
Voltage
Generator
2.6 V
3.4 V
5 V
12.8 V


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