ltc1759cg-trpbf Linear Technology Corporation, ltc1759cg-trpbf Datasheet - Page 15

• Manufacturer Part Number: ltc1759cg-trpbf
• Description: Smart Battery Charger
• Manufacturer: Linear Technology Corporation

OPERATIO
FUNCTION
LTCVersionFunction
()
SMBus Accelerator Pull-Ups
Both SCL and SDA have SMBus accelerator circuits which
reduce the rise time on systems with significant capaci-
tance on the two SMBus signals. The dynamic pull-up
circuitry detects a rising edge on SDA or SCL and applies
2mA to 5mA pull-up to V
nal pull-up resistors are still required to supply DC cur-
rent). This action allows the bus to meet SMBus rise time
U
DISCHARGE_ALARM
FULLY_DISHARGED
REMAINING_TIME_
CAPACITY_ALARM
FULLY_CHARGED
DISCHARGING
LTC_VERSION
TERMINATE_
REMAINING_
INITIALIZED
Reserved
ALARM
ERROR
FIELD
DD
for approximately 1 s (exter-
WORD BIT
MAPPING
15:0
3:0
11
10
9
8
7
6
5
4
RESET VALUE
POWER-ON
(BINARY)
0101hex
0
–
–
–
–
–
–
–
–
requirements with as much as 150pF on each SMBus
signal. The improved rise time will benefit all of the devices
which use the SMBus, especially those devices that use
the I
only pull to V
compliant to the SMBus specifications may still have rise
time compliance problems if the SMBus pull-up resistors
are terminated with voltages higher than V
ALLOWED VALUES
• This Bit May Be Used to Signal That the Charger May Be Restarted
• Write Only. Read Will NACK
• Writing a 0 to This Bit Will Be Ignored
• Not Supported by LTC1759
• Not Supported by LTC1759
• Write Only. Read Will NACK
• Intended for Host
• Not Supported by LTC1759
• Write Only. Read Will NACK
• Intended for Host
• Not Supported by LTC1759
• Write Only. Read Will NACK
• Intended for Host
• Not Supported by LTC1759
• Write Only. Read Will NACK
• Intended for Host
• Not Supported by LTC1759
• Write Only. Read Will NACK
• Intended for Host
• Not Supported by LTC1759
• Write Only. Read Will NACK
• Intended for Host
• Not Supported by LTC1759
• Write Only. Read Will NACK
• Intended for Host
• All Bits Set High Prior to AlarmWarning() Transmission
• Not Supported by LTC1759
• Write Only. Read Will NACK
• Returns LTC Version Number
• Read Only
• Always Returns 0101hex
After a Battery Conditioning Cycle Has Been Completed
2
C logic levels. Note that the dynamic pull-up circuits
DD
, so some SMBus devices that are not
LTC1759
DD
.
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