LTC1645IS#PBF

LTC1645 is a 2-channel Hot Swap™ controller that allows a board to be safely inserted and removed from a live backplane. Using external N-channel pass transistors, the supply voltages can be ramped at a programmable rate. Two high side switch drivers control the N-channel gates for supply voltages ranging from 1.2V to 12V. The two channels can be set to ramp up and down separately, or they can be programmed to rise and fall simultaneously, ensuring power supply tracking at the two outputs. Programmable electronic circuit breakers protect against shorts at either output. The RESET output can be used to generate a system reset when a supply voltage falls below a user-programmed voltage. An additional spare comparator is available for monitoring a second supply voltage. It is widely used in application such as hot board insertion, power supply sequencing, electronic circuit breaker etc.

• Programmable power supply sequencing
• Programmable electronic circuit breaker
• User-programmable supply voltage power-up and power-down rate
• High side drivers for external N-channel FETs
• Ensures proper power-up behavior
• Undervoltage lockout
• VCC1 supply current is 1.1mA typical at (ON = VCC1 = 5V, VCC2 = 3.3V)
• Operating temperature is -40°C to 85°C
• Package style is 8-lead NSOIC

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party