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LTC4449 Datasheet(PDF) 27 Page - Linear Technology

Part # LTC4449
Description  Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management
PDF  108 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4449 Datasheet(HTML) 27 Page - Linear Technology

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LTC3882-1
27
Rev A
For more information www.analog.com
Figure 2. LTC3882-1 Status Register Summary
(PAGED)
MFR_PADS_LTC3882-1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Channel 1 is Slave
Channel 0 is Slave
(reads 0)
(reads 0)
Invalid ADC Result(s)
SYNC Output Disabled Externally
Channel 1 is POWER_GOOD
Channel 0 is POWER_GOOD
LTC3882-1 Forcing RUN1 Low
LTC3882-1 Forcing RUN0 Low
RUN1 Pin State
RUN0 Pin State
LTC3882-1 Forcing FAULT1 Low
LTC3882-1 Forcing FAULT0 Low
FAULT1 Pin State
FAULT0 Pin State
STATUS_MFR_SPECIFIC
7
6
5
4
3
2
1
0
(PAGED)
38821 F02
STATUS_INPUT
7
6
5
4
3
2
1
0
STATUS_WORD
STATUS_BYTE
7
6
5
4
3
2
1
0
(PAGED)
MFR_COMMON
7
6
5
4
3
2
1
0
Chip Not Driving ALERT Low
Chip Not Busy
Internal Calculations Not Pending
Output Not In Transition
EEPROM Initialized
(reads 0)
SHARE_CLK_LOW
WP Pin High
STATUS_TEMPERATURE
7
6
5
4
3
2
1
0
STATUS_CML
7
6
5
4
3
2
1
0
*IF THE CHANNEL IS CONFIGURED AS A SLAVE AS INDICATED BY MFR_PADS_LTC3882-1[15:14], VOUT_OV FAULT INDICATES A DETECTED MASTER ERROR
AMPLIFIER FAULT (COMP VOLTAGE TOO HIGH). NO OTHER BITS IN STATUS_VOUT ARE ACTIVE ON SLAVE CHANNELS
STATUS_VOUT*
7
6
5
4
3
2
1
0
(PAGED)
STATUS_IOUT
7
6
5
4
3
2
1
0
(PAGED)
MASKABLE
DESCRIPTION
General Fault or Warning Event
General Non-Maskable Event
Dynamic
Status Derived from Other Bits
Yes
No
No
No
GENERATES ALERT
Yes
Yes
No
Not Directly
BIT CLEARABLE
Yes
Yes
No
No
VOUT_OV Fault
VOUT_OV Warning
VOUT_UV Warning
VOUT_UV Fault
VOUT_MAX Warning
TON_MAX Fault
TOFF_MAX Warning
(reads 0)
IOUT_OC Fault
(reads 0)
IOUT_OC Warning
(reads 0)
(reads 0)
(reads 0)
(reads 0)
(reads 0)
OT Fault
OT Warning
(reads 0)
UT Fault
(reads 0)
(reads 0)
(reads 0)
(reads 0)
Invalid/Unsupported Command
Invalid/Unsupported Data
Packet Error Check Failed
Memory Fault Detected
Processor Fault Detected
(reads 0)
Other Communication Fault
Other Memory or Logic Fault
Internal Temperature Fault
Internal Temperature Warning
EEPROM CRC Error
Internal PLL Unlocked
Fault Log Present
(reads 0)
VOUT Short Cycled
FAULT Low
VIN_OV Fault
(reads 0)
VIN_UV Warning
(reads 0)
Unit Off for Insuffcient VIN
(reads 0)
(reads 0)
(reads 0)
15
14
13
12
11
10
9
8
VOUT
IOUT
INPUT
MFR_SPECIFIC
POWER_GOOD#
(reads 0)
(reads 0)
(reads 0)
BUSY
OFF
VOUT_OV
IOUT_OC
(reads 0)
TEMPERATURE
CML
NONE OF THE ABOVE
MFR_INFO
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
EEPROM ECC Status
Reserved
Reserved
Reserved
Reserved
OPERATION



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