LTC4234: 20A Guaranteed SOA Hot Swap Controller Data Sheet10/2/2015671K
Features and Benefits
- Allows Safe Board Insertion into Live Backplane
- Small Footprint
- 4mΩ MOSFET Including RSENSE
- Safe Operating Area Guaranteed at 81W, 30ms
- Wide Operating Voltage Range: 2.9V to 15V
- Adjustable, 11% Accurate Current Limit
- Current and Temperature Monitor Outputs
- Overtemperature Protection
- Adjustable Current Limit Timer Before Fault
- Power Good and Fault Outputs
- Adjustable Inrush Current Control
- 2.5% Accurate Undervoltage and Overvoltage Protection
- Pin Compatible with LTC4233
- Available in a 38-Pin (5mm × 9mm) QFN Package
The LTC4234 is an integrated solution for Hot Swap™ applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a Hot Swap controller, power MOSFET and current sense resistor in a single package for small form factor applications. The MOSFET Safe Operating Area is production tested and guaranteed for the stresses in Hot Swap applications.
The LTC4234 provides separate inrush current control and an 11% accurate 22.5A current limit with output dependent foldback. The current limit threshold can be adjusted dynamically using the ISET pin. Additional features include a current monitor output that amplifies the sense resistor voltage for ground referenced current sensing and a MOSFET temperature monitor output. Thermal limit, overvoltage, undervoltage and power good monitoring are also provided. For a 10A compatible version, see LTC4233.
- High Availability Servers
- Solid State Drives
- 240W, 12V Systems
Markets and Technologies
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Demonstration circuit 2116A features the LTC4233/LTC4234 10A/20A Guaranteed SOA Hot Swap™ Controllers. The LTC4233 and LTC4234 are ideally suited for compact power distribution control in 2.9V to 15V applications for hot board insertion protection, high side power switching, and electronic circuit breaker functions.
Documentation & Resources
R536 Reliability Data3/26/201849 K
DC2116A - Demo Manual8/7/2015303K
Hot Swap Controllers7/13/2017778 K
LTC4233/LTC4234 Video Product Brief10/15/2018
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.