Negative Voltage Hot Swap Controllers in SOT-23


Posted on Feb 4, 2014

The LTC4251/LTC4251-1/LTC4251-2 negative voltage Hot Swap controllers allow a board to be safely inserted and removed from a live backplane. Output current is controlled by three stages of current limiting: a timed circuit breaker, active current limiting and a fast feed forward path that limits peak current under worst-case catastrophic fault con


Negative Voltage Hot Swap Controllers in SOT-23
Click here to download the full size of the above Circuit.

ditions. Programmable undervoltage and overvoltage detectors disconnect the load whenever the input supply exceeds the desired operating range. The supply input is shunt regulated, allowing safe operation with very high supply voltages. A multifunction timer delays initial start-up and controls the circuit breaker`s response time. The LTC4251 UV/OV thresholds are designed to match the standard telecom operating range of 43V to 75V. The LTC4251-1 UV/OV thresholds extend the operating range to encompass 36V to 72V. The LTC4251-2 implements a UV threshold of 43V only.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Brick-wall lowpass audio filter needs no tuning
Solar LED Mood Light
Guitar Vibrato circuit
Audio Filter Analyzer
3 Input mic mixer circuit
Mark 2 Memory circuit
USB audio DAC with PCM2704
Servo Motor Control Circuit
PLL pulse generator(74HC4060 TC9122P)
Hot-air Rework Station
AX3-300-2 DC arc welding machine circuit



Top