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LTC4230IGN 数据表(PDF) 1 Page - Linear Technology |
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LTC4230IGN 数据表(HTML) 1 Page - Linear Technology |
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1 / 36 page  1 LTC4230 4230f s Allows Safe Board Insertion and Removal from a Live Backplane s Controls Three Supply Voltages from 1.7V to 16.5V with VCC1 ≥ VCC2 ≥ VCC3 s Programmable Soft-Start with Inrush Current Limiting, No External Gate Capacitor Required s Faster Turn-Off Time with No Gate Capacitor s Dual Level Overcurrent Fault Protection s Programmable Overcurrent Response Time s Programmable Overvoltage Protection s Automatic Retry or Latched Mode Operation s Independent N-Channel FET High Side Drivers s User-Programmable Supply Voltage Power-Up Rate s FB n Pin Monitors VOUTn and Signals RESETn s Glitch Filter Eliminates Spurious RESET n Signals The LTC ®4230 is a 3-channel Hot SwapTM controller that allows a board to be safely inserted and removed from a live backplane. Internal high side switch drivers control the gates of external N-channel MOSFETs for supply voltages ranging from 1.7V to 16.5V. The LTC4230 pro- vides soft-start and inrush current limiting during the programmable start-up period. On-chip current limit comparators provide dual level circuit breaker protection. The slow comparators trip at VCCn – 50mV and activate in 10µs or are programmed by an external filter capacitor. The fast comparators trip at VCCn – 150mV and typically respond in 500ns. Each FB n pin monitors its own output supply voltage and signals its RESET pin. The ON pin turns the chip on and off and can be used for a reset function. The LTC4230 also provides additional functions including fault indication, autoretry or latchoff modes, programmable current limit response time based on the FAULT and FILTER pins’ functionality. s Electronic Circuit Breaker s Hot Board Insertion and Removal (Either On Backplane or On Removable Card) s Industrial High Side Switch/Circuit Breaker Triple Hot Swap Controller with Multifunction Current Control , LTC and LT are registered trademarks of Linear Technology Corporation. 3-Channel Hot Swap Controller Hot Swap is a trademark of Linear Technology Corporation. RSENSE2 0.007 Ω CX2 100nF CX1 100nF RX2 10 Ω Q2 IRF7413 VCC1 ON FAULT GND LTC4230 15 67 8 16 17 18 5 4 3 FB3 1 13 14 12 11 SENSE 1 GATE 1 VCC2 SENSE 2 GATE 2 SENSE 3 GATE 3 VCC3 RESET 3 2 RSENSE3 0.007 Ω RX1 10 Ω R8 5.1k R9 12k Q3 IRF7413 VOUT1 3.3V 5A VOUT2 2.5V 5A VOUT3 1.8V 5A RSENSE1 0.007 Ω CX3 100nF RX3 10 Ω CTIMER* 0.1 µF CFILTER** 15pF Q1 IRF7413 Z3*** Z2*** Z1*** * SYSTEM ON TIME: 6.2ms **CIRCUIT BREAKER RESPONSE TIME: 19.5 µs ***OPTIONAL Z1, Z2, Z3: SMAJ10 RESET 2 19 FB2 20 R7 10k RESET 1 9 FB1 10 R10 11k R11 12k R6 10k R12 18k R13 12k 4230 TA01 R5 10k PCB EDGE CONNECTOR (MALE) BACKPLANE CONNECTOR (FEMALE) VCC1 3.3V LONG VCC2 2.5V LONG VCC3 1.8V LONG SHORT FAULT GND LONG SHORT R2 10k R1 10k PCB CONNECTION SENSE RESET 3 TIMER FILTER RESET 2 RESET 1 APPLICATIO S FEATURES TYPICAL APPLICATIO DESCRIPTIO |
类似零件编号 - LTC4230IGN |
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类似说明 - LTC4230IGN |
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