Purchase LT4250H, In-stock LT4250H From SeekIC.
MFG:LT D/C:00+
Part Number: LT4250H
MFG: LT
D/C: 00+
Description: The LT®4250L/LT4250H are 8-pin, negative 48V Hot SwapTM controllers that allow a board to be safel...
- Table of contents:
LT4250H
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Suppliers
DataSheet
General Description
LT4250H General Description
The LT®4250L/LT4250H are 8-pin, negative 48V Hot SwapTM controllers that allow a board to be safely inserted and removed from a live backplane. Inrush current is limited to a programmable value by controlling the gate voltage of an external N-channel pass transistor. The pass transistor is turned off if the input voltage is less than the programmable undervoltage threshold or greater than the overvoltage threshold. A programmable current limit protects the system against shorts. After a 500ms timeout the current limit activates the electronic circuit breaker. The PWRGD (LT4250L) or PWRGD (LT4250H) signal can be used to directly enable a power module. The LT4250L is designed for modules with a low enable input and the LT4250H for modules with a high enable input.
The LT4250L/LT4250H are available in 8-pin PDIP and SO packages.
LT4250H Maximum Ratings
Supply Voltage (VDD VEE) ................ . 0.3V to 100V
PWRGD, PWRGD Pins ........................... 0.3V to 100V
SENSE, GATE Pins .................................... 0.3V to 20V
UV, OV Pins ..............................................0.3V to 60V
DRAIN Pin ................................................. 2V to 100V
Maximum Junction Temperature .........................125°C
Operating Temperature Range
LT4250LC/LT4250HC ............................. 0°C to 70°C
LT4250LI/LT4250HI .......................... 40°C to 85°C
Storage Temperature Range ............ 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................300°C
LT4250H Features
Allows Safe Board Insertion and Removal from a Live 48V Backplane
Circuit Breaker Immunity to Voltage Steps and Current Spikes
Programmable Inrush and Short-Circuit Current Limits
Pin Compatible with LT1640L/LT1640H
Operates from 20V to 80V
Programmable Overvoltage Protection
Programmable Undervoltage Lockout
Power Good Control Output
Bell-Core Compatible ON/OFF Threshold
Circuit Breaker Immunity to Voltage Steps and Current Spikes
Programmable Inrush and Short-Circuit Current Limits
Pin Compatible with LT1640L/LT1640H
Operates from 20V to 80V
Programmable Overvoltage Protection
Programmable Undervoltage Lockout
Power Good Control Output
Bell-Core Compatible ON/OFF Threshold
LT4250H Typical Application
Central Office Switching
48V Distributed Power Systems
Negative Power Supply Control
48V Distributed Power Systems
Negative Power Supply Control
LT4250H
PDF/DataSheet Download
- Datasheet: LT4250H
- File Size: 236251 KB
- Manufacturer: LINER [Linear Technology]
- Click here to Download
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