MAX5939 Series

-48V Hot-Swap Controllers with External RSENSEand High Gate Pulldown Current

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

-48V Hot-Swap Controllers with External RSENSEand High Gate Pulldown Current

Part	Number of Channels [custom]	Programmable Features	Applications	Supplier Device Package	Type	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case	Package / Case	Current - Supply	Mounting Type	Features	Voltage - Supply [Max]	Voltage - Supply [Min]
Analog Devices Inc./Maxim Integrated MAX5939BESA+
Analog Devices Inc./Maxim Integrated MAX5939AESA+	1	Circuit Breaker Current Limit OVP UVLO	-48 V	8-SOIC	Hot Swap Controller	85 °C	-40 C	0.154 in	8-SOIC	3.9 mm	700 µA	Surface Mount	Fault Timeout Latched Fault Thermal Limit	-20 V	-80 V
Analog Devices Inc./Maxim Integrated MAX5939EESA+	1	Circuit Breaker Current Limit OVP UVLO	-48 V	8-SOIC	Hot Swap Controller	85 °C	-40 C	0.154 in	8-SOIC	3.9 mm	700 µA	Surface Mount	Fault Timeout Latched Fault Thermal Limit	-20 V	-80 V
Analog Devices Inc./Maxim Integrated MAX5939EESA+T	1	Circuit Breaker Current Limit OVP UVLO	-48 V	8-SOIC	Hot Swap Controller	85 °C	-40 C	0.154 in	8-SOIC	3.9 mm	700 µA	Surface Mount	Fault Timeout Latched Fault Thermal Limit	-20 V	-80 V
Analog Devices Inc./Maxim Integrated MAX5939FESA+	1	Circuit Breaker Current Limit OVP UVLO	-48 V	8-SOIC	Hot Swap Controller	85 °C	-40 C	0.154 in	8-SOIC	3.9 mm	700 µA	Surface Mount	Fault Timeout Latched Fault Thermal Limit	-20 V	-80 V

Catalog

-48V Hot-Swap Controllers with External RSENSEand High Gate Pulldown Current

Description

The MAX5921/MAX5939 hot-swap controllers allow a circuit card to be safely hot plugged into a live backplane. The MAX5921/MAX5939 operate from -20V to -80V and are well suited for -48V power systems. These devices are pin compatible with both the LT1640 and LT4250 and provide improved features over these devices.The MAX5921/MAX5939 provide a controlled turn-on to circuit cards preventing damage to board connectors, board components, and preventing glitches on the power-supply rail. The MAX5921/MAX5939 provide undervoltage, overvoltage, and overcurrent protection. These devices ensure that the input voltage is stable and within tolerance before applying power to the load.Both the MAX5921 and MAX5939 protect a system against overcurrent and short-circuit conditions by turning off the external MOSFET in the event of a fault condition. The MAX5921/MAX5939 protect against input voltage steps by limiting the load current to a safe level without turning off power to the load.The device features an open-drain power-good status output, active-low PWRGD or PWRGD for enabling downstream converters (seeSelector Guide). A built-in thermal shutdown feature is also included to protect the external MOSFET in case of overheating. The MAX5939 features a latched fault output. The MAX5921 contains built-in autoretry circuitry after a fault condition.The MAX5921/MAX5939 are available in an 8-pin SO package and operate in the extended -40°C to +85°C temperature range.ApplicationsBase-Station Line CardsCentral-Office Line CardsNetwork Routers and SwitchesServer Line CardsTelecom Line Cards