參數(shù)資料
型號(hào)： FAN5201MSA
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 6 A BATTERY CHARGE CONTROLLER, 275 kHz SWITCHING FREQ-MAX, PDSO24
封裝： SSOP-24
文件頁(yè)數(shù)： 7/19頁(yè)
文件大?。?/td> 142K
代理商： FAN5201MSA
FAN5201
15
Pr
eliminar
y
Speci
cation
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
(C 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
Bit
Support
Power Down/Normal
1
0/1
Zero Current Reset
2
1 = TRUE
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
Bit
Support
CHARGE_INHIBITED
0
Always 0, charger
enabled
MASTER_MODE
1
Always 0, slave mode
VOLTAGE_NOTREG
2
0 = in regulation
CURRENT_NOTREG
3
0 = in regulation
LEVEL_2/3
4
Not supported
ZERO_CURRENT
5
0 = valid
CURRENT_OR
6
0 = valid
VOLTAGE_OR
7
0 = valid
THERMISTOR_OR
8
Not supported
THERMISTOR_COLD
9
Not Supported
THERMISTOR_HOT
10
Not Supported
THERMISTOR_UR
11
Not Supported
ALARM_INHIBITED
12
Not Supported
POWER_FAIL
13
0 = Voltage OK
BATTERY_PRESENT
14
Not Supported
AC_PRESENT
15
Always 1, charger
present
1
X
0/1
0
X
15
14
13
2
1
4
3
8
7
10
11
9
6
12
5
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