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BQ27520-G2 Datasheet, PDF (23/47 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge With Integrated LDO
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bq27520-G2
SLUSAB7A – MARCH 2011 – REVISED AUGUST 2011
Class
Configuration
Configuration
Configuration
Configuration
Configuration
Configuration
Configuration
Configuration
Configuration
Configuration
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Subclass
ID
64
64
64
64
64
64
68
68
68
68
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
81
81
81
81
81
81
81
81
81
82
Table 4-7. Data Flash Summary (continued)
Subclass
Registers
Registers
Registers
Registers
Registers
Registers
Offset
Name
7
SOC Delta
8
I2C Timeout
9
DFWrIndWaitTime
11 OpConfigB
12 OpConfigC
13 Clock Control Register
Data
Type
U1
U1
U2
H1
H1
H1
Min
Value
0
0
0
0x00
0x00
0x00
Power
Power
Power
Power
0
Flash Update OK Voltage
7
Sleep Current
16 Hibernate Current
18 Hibernate Voltage
I2
0
I2
0
U2
0
U2
2400
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
IT Cfg
21 Max Res Factor
22 Min Res Factor
0
Load Select
1
Load Mode
24 Ra Filter
40
Min % Passed Charge for
Qmax
44 Qmax Filter
45 Terminate Voltage
47 Term V Delta
50 ResRelax Time
54 User Rate-mA
56 User Rate-mW
58 Reserve Cap-mAh
60 Reserve Cap-mWh
65 Min Delta Voltage
67 Max Sim Rate
68 Min Sim Rate
69 Ra MAx Delta
71 Qmax MAx Delta%
72 DeltaV Max dV
74 Max Res Scale
76 Min Res Scale
78 Fast Scale Start SOC
U1
0
U1
0
U1
0
U1
0
U2
0
U1
1
U1
0
I2
–32,768
I2
0
U2
0
I2
–2000
I2
–7200
I2
0
I2
0
I2
–32,000
U1
0
U1
0
U2
0
U1
0
U2
0
U2
0
U2
0
U1
0
Current
Thresholds
0
Dsg Current Threshold
I2
0
Current
Thresholds
2
Chg Current Threshold
I2
0
Current
Thresholds
4
Quit Current
I2
0
Current
Thresholds
6
Dsg Relax Time
U2
0
Current
Thresholds
8
Chg Relax Time
U1
0
Current
Thresholds
9
Quit Relax Time
U1
0
Current
Thresholds
10 Transient Factor Charge
U1
0
Current
Thresholds
11 Transient Factor Discharge
U1
0
Current
Thresholds
12 Max IR Correct
U2
0
State
0
IT Enable
H1
0x00
Max
Value
25
7
65535
0xff
0xff
0xff
4200
100
700
3000
255
255
255
255
1000
100
255
32,767
4200
65534
–100
–350
9000
14,000
32,000
255
255
65,535
255
65,535
32767
32767
100
2000
2000
1000
8191
255
63
255
255
1,000
0x03
Default
Value
1
4
0
0x4B
0x2C
0x09
2800
10
8
2550
20
5
1
0
500
37
96
3400
200
500
0
0
0
0
0
2
20
44
5
10
5000
200
10
60
75
40
60
60
1
255
255
400
0x00
Units
%
num
5μs
–
–
–
mV
mA
mA
mV
num
num
–
–
num
%
num
mV
mV
s
mA
mW
mAh
mWh
mV
C/rate
C/rate
mΩ
%
mV
num
num
%
mA
mA
mA
s
s
s
num
num
mV
–
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GENERAL DESCRIPTION
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