LTC4284 Series

High Power Negative Voltage Hot Swap Controller with Energy Monitor

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

High Power Negative Voltage Hot Swap Controller with Energy Monitor

Part	Package / Case	Supplier Device Package	Current - Supply	Operating Temperature [Max]	Operating Temperature [Min]	Number of Channels [custom]	Features	Programmable Features	Mounting Type	Type	Applications	Voltage - Supply [Max]	Voltage - Supply [Min]
Analog Devices Inc./Maxim Integrated LTC4284HUHG#PBF	44-WFQFN Exposed Pad	44-QFN (5x8)	2.5 mA	125 °C	-40 C	1	I2C OVP UVLO	Auto Retry Current Limit Fault Timeout Latched Fault OVP UVLO	Surface Mount	Hot Swap Controller Monitor	Telecom	12 V	10.8 VDC
Analog Devices Inc./Maxim Integrated LTC4284CUHG#PBF	44-WFQFN Exposed Pad	44-QFN (5x8)	2.5 mA	70 °C	0 °C	1	I2C OVP UVLO	Auto Retry Current Limit Fault Timeout Latched Fault OVP UVLO	Surface Mount	Hot Swap Controller Monitor	Telecom	12 V	10.8 VDC
Analog Devices Inc./Maxim Integrated LTC4284CUHG#TRPBF	44-WFQFN Exposed Pad	44-QFN (5x8)	2.5 mA	70 °C	0 °C	1	I2C OVP UVLO	Auto Retry Current Limit Fault Timeout Latched Fault OVP UVLO	Surface Mount	Hot Swap Controller Monitor	Telecom	12 V	10.8 VDC
Analog Devices Inc./Maxim Integrated LTC4284IUHG#TRPBF	44-WFQFN Exposed Pad	44-QFN (5x8)	2.5 mA	85 °C	-40 C	1	I2C OVP UVLO	Auto Retry Current Limit Fault Timeout Latched Fault OVP UVLO	Surface Mount	Hot Swap Controller Monitor	Telecom	12 V	10.8 VDC
Analog Devices Inc./Maxim Integrated LTC4284IUHG#PBF	44-WFQFN Exposed Pad	44-QFN (5x8)	2.5 mA	85 °C	-40 C	1	I2C OVP UVLO	Auto Retry Current Limit Fault Timeout Latched Fault OVP UVLO	Surface Mount	Hot Swap Controller Monitor	Telecom	12 V	10.8 VDC
Analog Devices Inc./Maxim Integrated LTC4284HUHG#TRPBF	44-WFQFN Exposed Pad	44-QFN (5x8)	2.5 mA	125 °C	-40 C	1	I2C OVP UVLO	Auto Retry Current Limit Fault Timeout Latched Fault OVP UVLO	Surface Mount	Hot Swap Controller Monitor	Telecom	12 V	10.8 VDC

Catalog

High Power Negative Voltage Hot Swap Controller with Energy Monitor

Description

The LTC4284 negative voltage hot swap controller drives external N-channel MOSFETs to allow a board to be safely inserted and removed from a live backplane. The dual-gate, multi-mode drivers optimize the MOSFET safe operating area (SOA) for a variety of power levels. The SOA timer limits MOSFET temperature rise for reliable protection against overstresses.An I2C interface and onboard gear-shift ADC allow monitoring of board current, voltage, power, energy, and fault status. An available single-wire broadcast mode simplifies the interface by eliminating two isolators. The included EEPROM provides black-box capturing and nonvolatile configuration of fault behavior.Additional features respond to input UV/OV, interrupt the host when a fault has occurred, notify when output power is good, detect insertion of a board, turn off the MOSFETs if an external supply monitor fails to indicate power good within a timeout period, and auto-reboot after a programmable delay following a host commanded turn-off.APPLICATIONSTelecom Infrastructure–48V Distributed Power SystemsServers and Data CentersPower Monitors