MAX5977AETP+ by Analog Devices

1V to 16V, Single-Channel, Hot-Swap Controllers with Precision Current-Sensing Output


The MAX5977A/MAX5977B hot-swap controllers provide complete protection for systems with a 1V to 16V single-supply voltage. During the initial insertion, the hot-swap controllers limit the inrush current from damaging the board or from shorting out the backplane. When the input voltage is above the undervoltage threshold and below the overvoltage threshold, a 5µA current source powered from the internal 5V charge pump drives the gate of an external n-channel MOSFET providing a slow turn-on response. An internal current-sense amplifier in the IC monitors the current across an external shunt resistor providing current sensing for wide input-sense voltage range. The devices provide two levels of overcurrent circuit-breaker protections: a fast-trip threshold for a fast turn-off and a lower slow-trip threshold for a delayed turn-off. Exceeding either of the overcurrent circuit-breaker thresholds will force the device into fault mode where the external n-channel MOSFET is disabled. The MAX5977 is available in two versions which provide a latched off (MAX5977A) or autoretry (MAX5977B) output when the device is in fault mode. A calibration mode allows further calibration of the integrated transconductance amplifier for production testing of the final design. The devices are offered in a 20-pin, 4mm x 4mm, TQFN-EP package and are fully specified from -40°C to +85°C.

Where to Buy

Prices starting from US$3.96

Distributor Stock
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Farnell
from US$3.96
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Newark Electronics
from US$4.76
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element14
from US$3.96
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Features

1% Accurate Current-Sense Amplifier Output
Hot-Swap Monitors Operation from 1V to 16V
Integrated Charge Pump Fully Enhances the External n-Channel FET (VGATE = VIN + 5V)
VariableSpeed/BiLevel™ Fault Protection Provides Electronic Circuit-Breaker Function
Output Latched Off After Fault Condition (MAX5977A)
Autoretry After Fault Condition (MAX5977B)
Power-Good Indicator
Calibration Mode
Small, 20-Pin, 4mm x 4mm, TQFN-EP Package

Specifications

VIN (V) (min) 1
VIN (V) (max) 16
# Channels 1
Circuit Breaker/ Current Limit Circuit Breaker
Circuit Breaker/Current Limit Threshold (mV) Adjustable
Fault Condition Control Latched Off
Positive/Negative Rail Positive
Features On-Board Charge Pumps to Drive ExternalVariableSpeed/BiLevel Current Limit
Package/Pins TQFN/20
BudgetaryPrice (See Notes) 1.87


MAX5977AETP+ Semiconductors - ICs by Analog Devices

HOT SWAP CONTROLLER 2.7V-16V TQFN-20

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Controller Applications General Hot-Swap Network Switch/Routers Storage System & Servers
Input Voltage -
Supply Voltage Min 2.7V
Supply Voltage Max 16V
Controller IC Case Style TQFN
No. of Pins 20Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Hot Swap Controller, 2.7V-16V, Tqfn-20 | Newark Electronics
HOT SWAP CONTROLLER, 2.7V-16V, TQFN-20 | element14

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX5977AETP+ ?

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Is the MAX5977AETP+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX5977AETP+ have stock available?

Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX5977AETP+ .

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