LTC4227IGN-1#TRPBF Linear Technology, LTC4227IGN-1#TRPBF Datasheet
LTC4227IGN-1#TRPBF
Specifications of LTC4227IGN-1#TRPBF
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LTC4227IGN-1#TRPBF Summary of contents
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... LTC4227-2 provides automatic retry after a fault. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...
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... LTC4227CGN-1#PBF LTC4227CGN-1#TRPBF LTC4227CGN-2#PBF LTC4227CGN-2#TRPBF LTC4227IGN-1#PBF LTC4227IGN-1#TRPBF LTC4227IGN-2#PBF LTC4227IGN-2#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: ...
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T SYMBOL PARAMETER Supplies V Input Supply Range IN I Input Supply Current IN V Internal Regulator Voltage INTVCC V Internal V Undervoltage Lockout INTVCC(UVL) CC ∆V Internal V Undervoltage Lockout INTVCC(HYST) ...
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LTC4227-1/LTC4227-2 elecTrical characTerisTics temperature range, otherwise specifications are at T SYMBOL PARAMETER Input/Output Pin + + I SENSE Input Current SENSE – – I SENSE Input Current SENSE + + V SENSE Undervoltage Lockout SENSE (UVL ∆V SENSE ...
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Typical perForMance characTerisTics IN Supply Current vs Voltage (V) IN 422712 G01 Diode Gate Voltage vs Current – 0.1V SENSE ...
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LTC4227-1/LTC4227-2 Typical perForMance characTerisTics HGATE Pull-Up Current vs Temperature –11.0 –10.5 –10.0 –9.5 –9.0 –50 – TEMPERATURE (°C) 422712 G10 pin FuncTions CPO1, CPO2: Charge Pump Output. Connect a capacitor from CPO1 or CPO2 to the ...
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FuncTions HGATE: Hot Swap MOSFET Gate Drive Output. Connect this pin to the gate of the external N-channel MOSFET for Hot Swap control. An internal 10µA current source charges the MOSFET gate. An internal clamp limits the gate volt- ...
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LTC4227-1/LTC4227-2 block DiagraM HGATE GATE 12V DRIVER OUT CPO1 DGATE1 D2ON + – 1.235V – 1.235V + ON – INTV CC + 0.6V 10µA CP3 EN* + CARD PRESENCE DETECT – 1.235V INTV CC 100µA – 1.235V + TMR – ...
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The LTC4227 functions as an input supply diode-OR with inrush current limiting and overcurrent protection by controlling the external N-channel MOSFETs (M M and supply path. This allows boards safely inserted ...
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LTC4227-1/LTC4227-2 applicaTions inForMaTion High availability systems often employ parallel-connected power supplies or battery feeds to achieve redundancy and enhance system reliability. Power ORing diodes are commonly used to connect these supplies at the point of load, but at the expense ...
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During a normal power-up, the ideal diode MOSFETs turn on first. As soon as the internally generated supply, INTV rises above its 2.2V undervoltage lockout threshold, the internal charge pump is allowed to charge up the CPO pins. ...
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LTC4227-1/LTC4227-2 applicaTions inForMaTion Board Presence Detect with high when the EN pin goes low, indicating a board presence, the LTC4227 initiates a 100ms timing cycle for contact debounce. Upon board insertion, any bounces on the EN ...
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Active Current Loop Stability The active current loop on the HGATE pin is compensated by the parasitic gate capacitance of the external N-channel MOSFET. No further compensation components are nor- mally required. In the case when a MOSFET ...
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LTC4227-1/LTC4227-2 applicaTions inForMaTion TMR 1V/DIV FAULT 10V/DIV HGATE 5V/DIV I LOAD 10A/DIV 100ms/DIV Figure 6. Auto-Retry Sequence After a Fault Supply Undervoltage Monitor The ON pin functions as a turn-on control and an input supply monitor. A resistive divider connected ...
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The gate drive is limited to not more than 14V. This allows the use of logic-level threshold N-channel MOSFETs and standard N-channel MOSFETs above 7V. An external Zener diode can be used to clamp the ...
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LTC4227-1/LTC4227-2 applicaTions inForMaTion For C = 680µF , the time it takes to charge culated as: C • V 680µF • 12V CHARGE I 0.5A INRUSH The inrush current is set to ...
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It is also important to place the bypass capacitor, C1, for the INTV pin, as close as possible between INTV CC GND. Also place C near the CPO1 and IN1 pins, and CP1 C near the CPO2 and ...
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LTC4227-1/LTC4227-2 applicaTions inForMaTion V MAIN 3.3V Z1 SMAJ7A V AUX 3.3V Z2 SMAJ7A R2 22.1k R1 20k R6 BACKPLANE CARD 28.7k CONNECTOR CONNECTOR C R5 10nF 20k Figure 8. Plug-In Card IN1 Supply Controls the IN2 Supply Turn-On Via D2ON ...
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... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... Operates from 9V to 80V, Controls Two N-Channel, S0-16 or DFN-14 Operates from 9V to 80V, Controls N-Channel, MSOP-8 or DFN-6 Operates from 9V to 26.5V, On-Chip N-Channel, TSSOP-16 or DFN-14 www.linear.com ● 12V + 1000µF HG OUT FAULT PWRGD EN BACKPLANE PLUG-IN 422712 TA02 CARD LT 0211 • PRINTED IN USA LINEAR TECHNOLOGY CORPORA TION 2011 422712f ...