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LT7184S Datasheet(PDF) 27 Page - Analog Devices

No. de pieza LT7184S
Descripción Electrónicos  Dual Channel 9A, 16V PolyPhase Step-Down Silent Switcher 2 with Digital Power System Management
PDF  52 Pages
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LT7184S Datasheet(HTML) 27 Page - Analog Devices

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Data Sheet
LT7184S
analog.com
Rev. 0
27 of 52
WARNING OR
FAULT TYPE1
DETECTION
METHOD
DEFAULT THRESHOLD
DEFAULT
REGULATOR
RESPONSE
DEFAULT PIN RESPONSE
PGOODN
FAULTN
ALERT
VOUT OV Fault
VSENSE
comparator
VOUT_COMMAND + 10%
Shutdown and
retry
Pull
low
Pull
low
Pull
low
VIN OV Fault
PVIN
comparator
17.6V
Shutdown and
retry
Pull
low
Pull
low
Pull
low
VIN UV Warning
ADC
-1V (disabled)
Continue
operation
Pull
low
OT Warning
ADC
140oC
Continue
operation
Pull
low
OT Fault
ADC
160oC
Shutdown and
retry
Pull
low
Pull
low
Pull
low
IOUT Overcurrent
(IOUT_OC)
Warning
ADC
IAVG > 9A
Continue
operation
Pull
low
IOUT_OC Fault
ITH
comparator
VITH ≥ 1.6V2
Continue
operation
Pull
low
Pull
low
Pull
low
Turn-On Time
(TON_MAX) Fault
VSENSE
comparator
and timer
5ms without exceeding
VOUT_UV_FAULT_LIMIT
Continue
operation
Pull
low
Pull
low
Turn-Off Time
(TOFF_MAX)
Warning
ADC and
timer
0 (Disabled)
N/A
Pin Configuration
Error3
I/O
N/A
Lock off until
the next reset
Pull
low
Pull
low
Pull
low
EEPROM Error
CRC, ECC
N/A
Lock off until
the next reset
Pull
low
Pull
low
Internal Reference
Fault
ADC and
second
reference
±5%
Shutdown and
retry
Pull
low
Pull
low
Pull
low
PMBus/I2C
Communications
Error (CML)
Logic
N/A
N/A
Pull
low
1
Refer to the LT7184S PMBus/I2C Reference Manual for detailed information, including configuring thresholds and
responses.
2
The IOUT_OC_FAULT valley current threshold is controlled by MFR_PWM_MODE_LT7184S bits [10:9], and the
IOUT_OC analog comparator trips at typically 95% of the valley current limit programmed by these bits.
3
When a pin configuration error is detected during initialization, the device pulls low the following pins: FAULT0,
FAULT1
, RUN0, RUN1, SHARE_CLK, PGOOD0, PGOOD1, and ALERT.



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