The ISL6141 is an 8-pin, negative voltage hot plug controller that allows 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 Under-Voltage threshold, or greater than the Over-Voltage threshold. The IntelliTrip™ electronic circuit breaker and programmable current limit features protect the system against short circuits. When the Over-Current threshold is exceeded, the output current is limited for 600µs before the circuit breaker shuts down the FET. If the fault disappears before the 600µs time-out, normal operation resumes. In addition, the IntelliTrip™ electronic circuit breaker has a fast Hard Fault shutdown with a threshold set at 4 times the current limit value. When activated, the GATE is immediately turned off and then slowly turned back on for a single retry (soft-start). The active low PWRGD signal can be used to directly enable a power module (with a low enable input). The ISL6151 is the same device but has an active high PWRGD output.


  • Operates from -20V to -80V (-100V Absolute Max Rating)
  • Programmable Inrush Current
  • Programmable Over-Voltage Protection
  • Programmable Under-Voltage Protection
  • 135mV of hysteresis
  • Equals ~4.6V of hysteresis at the power supply
  • UVLO (Under-Voltage Lock-Out) ~ 16.5V
  • Programmable Current Limit with 600µs time-out
  • IntelliTrip™ electronic circuit breaker distinguishes between Over-Current and Hard Fault conditions
  • Fast shutdown for Hard Faults with a single retry (fault current > 4X current limit value).
  • Pin Compatible with ISL6140/50.
  • Power Good Control Output
  • Monitors both the DRAIN (voltage drop across the FET) and the GATE voltage; once both are OK, the Power Good output is latched in the active state.
  • PWRGD active high: ISL6151 (H version)
  • PWRGD active low: ISL6141 (L version)


  • VoIP (Voice over Internet Protocol) Servers
  • Telecom systems at -48V
  • Negative Power Supply Control
  • +24V Wireless Base Station Power

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOICN Tube 980
Active SOICN Reel 2500
Active SOICN Tube 980
Active SOICN Reel 2500


Title language Type Format File Size Date
Datasheets & Errata
star ISL6141, ISL6151 Datasheet Datasheet PDF 955 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
How Green is Your Cloud? White Paper PDF 295 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
PCN13060 - Test Site Change for the Listed Intersil Products Product Change Notice PDF 223 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
TB457: Understanding Intersil Hot Plug Devices Other PDF 2.20 MB

memoryBoards & Kits

Part Number Title Type Company
ISL6140/41EVAL1Z Negative Voltage Hot Plug/Hot Swap Controller Evaluation Board Evaluation Renesas