Maxim delivers dual hot-swap controller

maximmax5970Sunnyvale, Calif. — Maxim Integrated Products has introduced the MAX5970, a dual hot-swap controller for systems with two 0 to 16-V supply voltages. This device allows line cards to be safely inserted and removed from a live backplane without causing glitches on the system power-supply rail, said Maxim.

The MAX5970 integrates a 10-bit ADC for monitoring voltages and currents, allowing system designers to conserve energy and improve accuracy in high-availability systems. This hot-swap controller is well suited for networking, base station, storage, computer, and server line cards.

The integrated 10-bit ADC and I2C-compatible interface allow for precise monitoring of currents, voltages, and fault conditions. The ADC is multiplexed to monitor and measure the output voltage and current of each hot-swap channel. The MAX5970 also integrates a circular buffer that stores 5 ms of past current and voltage measurements. The buffer can be read through the I2C interface at anytime or after a fault has occurred for system debugging and failure analysis.

Rated for 0 to 16-V inputs, the device can withstand transients or inductive spikes up to 30 V. The MAX5970 provides controlled inrush current at startup and two levels of over-current protection after startup. The device also includes five digital comparators per hot-swap channel to provide over-current warning, two levels of over-voltage detection, and two levels of under-voltage detection.

Other features include four programmable LED outputs, as well as alert outputs to indicate under-voltage, over-voltage, and over-current faults.

The MAX5970, available in a 36-pin TQFN-EP package, is fully specified over the -40°C to +85°C extended temperature range.

Pricing: Pricing starts at $4.42 (1000-up, FOB USA).

Resources: MAX5970 datasheet.