参数资料
型号: FAN5235QSC
英文描述: Analog IC
中文描述: 模拟IC
文件页数: 15/20页
文件大小: 123K
代理商: FAN5235QSC
FAN5201
15
P
The SMBus continues to latch incoming information in
Power Down.
Zero Current Reset true (=1) resets the ZERO_CURRENT
bit (in the charger status word) to 0 = valid. In order for the
ZERO_CURRENT bit to function again, the Zero Current
Reset bit must be set false (= 0) after this, otherwise the
ZERO_CURRENT bit will remain in the valid state regard-
less of battery current.
¥ SMBus Protocol: Write Word
¥ Command Code: 0x18
Figure 10. Control Signals Word
For example, 0x0006 sets the IC in normal operation, and the
zero current bit is reset.
Supported Communications—Read Section
(μC to IC)
Charger Status
The host uses this command to read the charger’s status bits.
VOLTAGE_NOTREG is set if the battery voltage is outside
+10% of the programmed charging voltage.
CURRENT_NOTREG is set if the battery current is outside
+10% of the programmed charging current.
ZERO_CURRENT is zero if the battery current is less than
200mA (with an 18m
sense resistor).
CURRENT_OR is zero if the battery current is >6A.
VOLTAGE_OR is zero if the battery voltage is >110% of the
programmed charging voltage.
POWER_FAIL is set if the battery voltage is <8.5V.
¥ SMBus Protocol: Read Word
¥ Command Code: 0x13
Figure 11. Charger Status Word
For example, a normal operation charger might set this word
to 0x8028 to show that the AC adapter is present, power is on,
voltage is being regulated, and current is above minimum.
Charger Settings
The host uses this command to read the charger’s settings.
¥ SMBus Protocol: Block Read
¥ Command Code: 0x3F
Table 5. Control Signals
Field
Power Down/Normal
Zero Current Reset
Bit
1
2
Support
0/1
1 = TRUE
X
X
X
X
X
X
X
X
X
X
X
X
X
ZCR PD
X
15
14
13
2
1
4
3
0
8
7
10
11
9
6
12
5
Table 6. Charger Status Read
Field
CHARGE_INHIBITED
Bit
0
Support
Always 0, charger
enabled
Always 0, slave mode
0 = in regulation
0 = in regulation
Not supported
0 = valid
0 = valid
0 = valid
Not supported
Not Supported
Not Supported
Not Supported
Not Supported
0 = Voltage OK
Not Supported
Always 1, charger
present
MASTER_MODE
VOLTAGE_NOTREG
CURRENT_NOTREG
LEVEL_2/3
ZERO_CURRENT
CURRENT_OR
VOLTAGE_OR
THERMISTOR_OR
THERMISTOR_COLD
THERMISTOR_HOT
THERMISTOR_UR
ALARM_INHIBITED
POWER_FAIL
BATTERY_PRESENT
AC_PRESENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
X
0/1
0/1
0/1
0/1
0/1
0/1
0
X
X
X
X
X
X
15
14
13
2
1
4
3
8
7
10
11
9
6
12
5
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