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LTC4099 Datasheet(PDF) 37 Page - Linear Technology

Part # LTC4099
Description  Dual-Input Power Manager
PDF  52 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4099 Datasheet(HTML) 37 Page - Linear Technology

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LTC4155
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Table 15. USB On-The-Go ID Pin Detection
USB On-The-Go ID PIN DETECTION
REG3
SUB ADDRESS
0x03
ID_PIN_DETECT
DIRECTION
Read
ID PIN STATUS
D7
D6
D5
D4
D3
D2
D1
D0
No Detection
0
ID Pin Shorted to
GND*
1
*LOCKOUT_ID_PIN has no effect on pin detection.
Table 16. USB On-The-Go Enabled Status
USB On-The-Go ENABLED STATUS
REG3
SUB ADDRESS
0x03
OTG_ENABLED
DIRECTION
Read
STEP-UP REGULATOR
STATUS
D7
D6
D5
D4
D3
D2
D1
D0
Step-Up Switching
Regulator Inactive
0
Step-Up Switching
Regulator Active
1
Table 17. NTC Thermistor Status Report
NTC THERMISTOR STATUS REPORT
REG3
SUB ADDRESS
0x03
NTCSTAT[1:0]
DIRECTION
Read
NTC THERMISTOR
STATUS
D7
D6
D5
D4
D3
D2
D1
D0
NTC Normal
0
0
NTC_TOO_COLD
0
1
NTC_TOO_WARM
1
0
NTC_HOT_FAULT
1
1
Table 18. Low Battery Detection
LOW BATTERY DETECTION
REG3
SUB ADDRESS
0x03
LOWBAT
DIRECTION
Read
BATTERY VOLTAGE
STATUS
D7
D6
D5
D4
D3
D2
D1
D0
Normal
0
Low Cell Voltage*
1
*Low cell voltage is only meaningful when input (WALL or USB) power
is available and the battery charger is enabled, or when automatic or
manual enable of the step-up regulator has been requested.
Table 19. External Power (Wall or USB) Available
EXTERNAL POWER (WALL OR USB) AVAILABLE
REG4
SUB ADDRESS
0x04
EXT_PWR_GOOD
DIRECTION
Read
POWER AVAILABLE
STATUS
D7
D6
D5
D4
D3
D2
D1
D0
Battery Power
Only
0
External Power
Available*
1
*Never true when On-The-Go step-up converter is active.
Table 20. USB Input Voltage Valid
USB INPUT VOLTAGE VALID
REG4
SUB ADDRESS
0x04
USBSNS_GOOD
DIRECTION
Read
USBSNS STATUS
D7
D6
D5
D4
D3
D2
D1
D0
USBSNS Voltage
Invalid
0
USBSNS Voltage
Valid*
1
*Will be true with applied input voltage within valid range or On-The-Go
in regulation.
Table 21. WALL Input Voltage Valid
WALL INPUT VOLTAGE VALID
REG4
SUB ADDRESS
0x04
WALLSNS_GOOD
DIRECTION
Read
WALLSNS STATUS
D7
D6
D5
D4
D3
D2
D1
D0
WALLSNS Voltage
Invalid
0
WALLSNS Voltage
Valid
1
Table 22. Input Current Limit Status
INPUT CURRENT LIMIT STATUS
REG4
SUB ADDRESS
0x04
AT_INPUT_ILIM
DIRECTION
Read
INPUT CURRENT
LIMIT STATUS
D7
D6
D5
D4
D3
D2
D1
D0
Input Current Limit Inactive
0
Input Current Limit Active
1
OPERATION



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