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LTC1422CS8
LTC1422 Hot Swap Controller U DESCRIPTIO FEATURES s s s s s s s s s s The LTC®1422 is an 8-pin Hot SwapTM controller that allows a board to be safely inserted and removed from a live backplane. Using an external N-channel pass transistor, the board supply voltage can be ramped up at a programmable rate. A high side switch driver controls the N-channel gate for supply voltages ranging from 2.7V to 12V. Allows Safe Board Insertion and Removal from a Live Backplane System Reset Output with Programmable Delay Programmable Electronic Circuit Breaker User-Programmable Supply Voltage Power-Up Rate High Side Driver for an External N-Channel FET Controls Supply Voltages from 2.7V to 12V Undervoltage Lockout Soft Reset Input Glitch Filter on RESET Available in 8-Pin Narrow PDIP and SO Packages A programmable electronic circuit breaker protects against shorts. The RESET output can be used to generate a system reset when the supply voltage falls below a programmable voltage. The ON pin can be used to cycle the board power or to generate a soft reset. U APPLICATIO S s s The LTC1422 is available in 8-pin PDIP and SO packages. Hot Board Insertion Electronic Circuit Breaker , LTC and LT are registered trademarks of Linear Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. U TYPICAL APPLICATIO 5V Hot Swap Q1 R1 0.005Ω MTB50N06V VCC CONNECTOR 1 CONNECTOR 2 R2 10Ω 5% ON/RESET VOUT 5V + 8 2 7 VCC FB ON 5 LTC1422 RESET TIMER 3 GND C2 0.33µF 4 R3 6.81k 1% C1 0.1µF 6 SENSE GATE CLOAD 1 R4 2.43k 1% µP RESET GND 1422 TA01 BACKPLANE PLUG-IN CARD 1422fb 1
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