TPS2421-1DDA Part Information

Details for TPS2421-1DDA by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

The TPS2421 device provides highly integrated hot swap power management and superior protection in applications where the load is powered by busses up to 20 V. The TPS2421 device is well suited to standard bus voltages as low as 3.3 V because of the maximum-UV turnon threshold of 2.9 V. These devices are very effective in systems where a voltage bus must be protected to prevent shorts from interrupting or damaging the unit. The TPS2421 device is an easy to use devices in an 8-pin PowerPad™ SO-8 package. The TPS2421 device has multiple programmable protection features. Load protection is accomplished by a non-current limiting fault threshold, a hard current limit, and a fault timer. The current dual thresholds allow the system to draw short high current pulses, while the fault timer is running, without causing a voltage droop at the load. An example of this is a disk drive startup. This technique is ideal for loads that experience brief high demand, but benefit from protection levels in-line with their average current draw. Hotswap MOSFET protection is provided by power limit circuitry which protects the internal MOSFET against SOA related failures. The TPS2421 device is available in latch-off on fault (TPS2421-1) and retry on fault (TPS2421-2).

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Part Features

  • Current Limit Proportionally Larger than Fault Current
  • Integrated Pass MOSFET
  • Internal MOSFET Power Limiting
  • Latch-Off on Fault (TPS2421-1) and Retry (TPS2421-2) Versions
  • Programmable Fault Current
  • Programmable Fault Timer
  • SO-8 PowerPadu2122 Package
  • UL2367 Recognized - File Number E169910
  • Up to 20-V Bus Operation
  • u201340u00b0C to +125u00b0C Junction Temperature Range

Part Specifications

Controller Applications Disk Drives Plug In Circuit Boards RAID Arrays Telecommunications
Input Voltage -
Supply Voltage Min 3V
Supply Voltage Max 20V
Controller IC Case Style SOIC
No. of Pins 8Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Internal Switch Yes
RoHS Compliant

Alternative Part Descriptions

  • HOT SWAP CONTROLLER, 3-20V, POWERPAD-SO8; Controller Applications:Disk Drives, Plug In Circuit Boards, RAID Arrays, Telecommunications; Input Voltage:-; Supply Voltage Min:3V; Supply Voltage Max:20V; Controller IC Case Style:SOIC; RoHS Compliant: Yes | Newark Electronics
  • Hot Swap Controller 1-CH 20V 8-Pin HSOP EP Tube | Avnet America
  • 3-V to 20-V, 33mΩ, 1.8-5.5A eFuse | Texas Instruments

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