X3102 Datasheet, PDF (12/32 Pages) Intersil Corporation – 3 Cell Li-Ion Battery Protection and Monitor IC

D₆ D₇
BAT54 BAT54
D₁ D₂
Charge FET
Discharge FET
Q₁ Q2
R_PU
1M
I_LMON
D₃
Q₁₀
P+
Transistor Recommendations
Q1, Q2 = Si4435
Q3 = 2N3906
Q4 - Q10 = 2N7002
3 or 4
Li-Ion cells^†
1µF
B+
I_LMT
.
Q₃
R_LMT
V_RGO
28
27
26
25
24 23
V_CC RGP
RGC RGO
UVP/ OVP/
OCP ^LMON
100
R_CB
Q6
100
R_CB
Q7
100
R_CB
Q8
1
0.01µF
2
3
0.01µF
4
5
0.01µF
6
7
VCELL1
CB1
VCELL2
CB2
VCELL3
CB3
V_SS
X3102
CS
SCK
SO
SI
AS2
AS1
AS0
C1
0.1µF
R1
1M
(Optional)
Choose R1 and
C1 such that
V_RGO goes to
0.1V (or less) in
170ms (or less)
when entering
the Sleep Mode
(at 25°C).
R_T’
22
21
20
19
18
17
16
µC,
ASIC
V_CC
A/D
Reset
Ref
GP
I/O
GP
I/O
GP
I/O
R_POR
C_POR
Set High
after power
up to enable
SMBus and
LMON
Q₄
Q5
SMBCLK
100
100 _SMBDATA
8
NC
15
AO
A/D Input
FETs Q4 and Q5 are needed
only if external pull-ups on
V_SS VCS1 VCS2
9
10 11
OVT UVT OCT
12
13
14
V_T
R_T
A/D Input
the SMBus lines cause
voltage to appear at the uC
Vcc pin during sleep mode.
B-
C_OV
C_UV C_OC
P-
R_SENSE
FIGURE 7. TYPICAL APPLICATION CIRCUIT