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SS4035G Datasheet(PDF) 8 Page - Silicon Standard Corp.

Part No. SS4035G
Description  Two-Cell Li-Ion and Li-Polymer Charge Management IC
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Maker  SSC [Silicon Standard Corp.]
Homepage  http://www.siliconstandard.com
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SS4035G Datasheet(HTML) 8 Page - Silicon Standard Corp.

 
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SS4035G
1/09/2006 Rev.3.01
If
any cell voltage is greater than the other by 0.02V
transistor and sends a small current through resistor
or more, the corresponding balance control output
Rb. This slows down charging of the corresponding cell.
goes high. It then turns on the corresponding by-pass
The balance circuit turns off when the cells are balanced.
CHARGING CONTROL
AVDD
16
CCTL
5
VDD
13
TESTIN
3
CLED
1
TESTOUT
4
CFLED
2
V2
12
S3
15
BA2
18
S2
20
V1
11
S1
19
BA1
17
RES
7
FC
6
ROSC
14
T
9
GND
8
I
10
U?
SS4035G
1k
3.3k
10k
NPN
CAP
V+
VB+
VDD
Figure 5 shows the linear charger mode for the
MOSFET which is operating in the active region.
SS4035G. The output of pin CCTL (5) is a pulse-
This P-channel MOSFET must be chosen carefully
width modulated (PWM) signal. This signal is
to handle the required power dissipation.
translated to a DC voltage to control the P-channel
DIGITAL CONTROLS
AVDD
16
CCTL
VDD
13
TESTIN
CLED
1
TESTOUT
CFLED
2
V2
S3
15
BA2
S2
20
V1
S1
19
BA1
RES
7
FC
ROSC
14
T
GND
8
I
SS4035G
3K
3K
47K 8.6K
LED
LED
1nF
VDD
Figure 6 shows the connections for the digital pins
have internal pull-ups. Table 1 shows the options
for the SS4035G. Selection pins S1, S2 and S3
for selecting the required voltage for Isense.
Figure 5. Charging Control
Figure 6. Current Selection and Logic Control
P-channel
MOSFET


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