MAX1535 Maxim Integrated Products, MAX1535 Datasheet - Page 22

• Manufacturer Part Number: MAX1535
• Description: Highly Integrated Level 2 Smbus Battery Charger
• Manufacturer: Maxim Integrated Products

www.DataSheet4U.com
Highly Integrated Level 2 SMBus
Battery Charger
Table 5. ChargerStatus()
Command: 0x13
* Indicates POR state.
22
______________________________________________________________________________________
BIT
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
VOLTAGE_NOT_REG
CURRENT_NOT_REG
THERMISTOR_COLD
CHARGE_INHIBITED
BATTERY_PRESENT
THERMISTOR_HOT
ALARM_INHIBITED
THERMISTOR_OR
THERMISTOR_UR
MASTER_MODE
CURRENT_OR
VOLTAGE_OR
AC_PRESENT
POWER_FAIL
BIT NAME
LEVEL_2
LEVEL_3
0* = Ready to charge the smart battery.
1 = Charging is inhibited; charge current is 0mA.
This status bit returns the value of the CHG_INHIBITED flip-flop.
Always returns a zero
0 = Battery voltage is limited at the set point.
1 = Battery voltage is less than the set point.
0 = Battery current is limited at the set point.
1 = Battery current is less than the set point.
Always returns a 1
Always returns a zero
0 = The ChargeCurrent() value is valid for the MAX1535.
1 = The ChargeCurrent() value exceeds the MAX1535 output range, i.e.,
programmed ChargeCurrent() exceeds 0x1F80.
0 = The ChargeVoltage() value is valid for the MAX1535.
1 = The ChargeVoltage() value exceeds the MAX1535 output range, i.e.,
programmed ChargeVoltage() exceeds 0x4B00.
0 = THM is < 91% of the reference voltage.
1 = THM is > 91% of the reference voltage.
0 = THM is < 75% of the reference voltage.
1 = THM is > 75% of the reference voltage.
0 = THM has not dropped to < 23% of the reference voltage.
1 = THM has dropped to < 23% of the reference voltage.
THERMISTOR_HOT flip-flop cleared by BATTERY_PRESENT = 0 or writing a 1
into the POR_RESET bit in the ChargerMode() command.
0 = THM is > 5% of the reference voltage.
1 = THM is < 5% of the reference voltage.
Returns the state of the ALARM_INHIBITED flip-flop. This flip-flop is set by either
a watchdog timeout or by writing an AlarmWarning() command with bits 12, 14,
or 15 set. This flip-flop is cleared by BATTERY_PRESENT = 0, or writing a 1 into
the POR_RESET bit in the ChargerMode() command, or by receiving
successive ChargeVoltage() and ChargeCurrent() commands.
0 = ACIN is above the REF/2 threshold.
1 = ACIN is below the REF/2 threshold.
0 = No battery is present (V
1 = Battery is present (V
0 = DCIN is below the 7.5V undervoltage threshold.
1 = DCIN is above the 7.5V undervoltage threshold.
THM
THM
< 0.91 × V
> 0.91 × V
DESCRIPTION
DD
).
DD
).