LTM9100 - Anyside™ High Voltage Isolated Switch Controller with I²C Command and Telemetry


  • UL-CSA Recognition Pending: 5kVRMS for One Minute
  • Reinforced Insulation
  • Integrated Isolated Power Supply
  • Adjustable Turn-On Ramp Rate and Current Limit
  • I2C/SMBus Interface
  • 10-Bit ADC Monitors Current and Two Uncommitted Channels
  • High Common Mode Transient Immunity: ≥ 30kV/μs
  • Fault Status Alert and Power Good Outputs
  • Independent 3V to 5.5V Logic Supply
  • ±20kV ESD Across the Isolation Barrier
  • Maximum Continuous Working Voltage: 690VRMS
  • 14.6mm Creepage Distance
  • Low Current Shutdown Mode (<10μA)
  • 22mm × 9mm × 5.16mm BGA Package

Typical Application

LTM9100 Typical Application
LTM9100 Typical Application


The LTM®9100 μModule® (micromodule) controller is a complete, galvanically isolated switch controller with I2C interface, for use as a load switch or hot swap controller. The load is soft started and controlled by an external N-channel MOSFET switch. Overcurrent protection minimizes MOSFET stress during start-up, input step and output short-circuit conditions. Owing to the isolated, floating character of the switch, it is easily configured for use in high side, low side and floating applications.

A single 5V supply powers both sides of the switch controller through an integrated, isolated DC/DC converter. A separate logic supply input allows easy interfacing with logic levels from 3V to 5.5V, independent of the main supply. Isolated measurements of load current and two additional voltage inputs are made by a 10-bit ADC, and accessed via the I2C interface.

The logic and I2C interface is separated from the switch controller by a 5kVRMS isolation barrier, making the LTM9100 ideal for systems where the switch operates on buses up to 1000VDC, as well as for providing galvanic isolation in systems where a ground path is broken to allow large common mode voltage swings. Uninterrupted communication is guaranteed for common mode transients of up to 30kV/μs.


For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LTM9100CY#PBF 22mm x 9mm x 5.16mm BGA BGA C 05-08-1973 Yes
LTM9100HY#PBF 22mm x 9mm x 5.16mm BGA BGA H 05-08-1973 Yes
LTM9100IY#PBF 22mm x 9mm x 5.16mm BGA BGA I 05-08-1973 Yes

LTM9100 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTM9100CY#PBF 22mm x 9mm x 5.16mm BGA C $27.79 $19.45 Yes
LTM9100HY#PBF 22mm x 9mm x 5.16mm BGA H $33.57 $23.50 Yes
LTM9100IY#PBF 22mm x 9mm x 5.16mm BGA I $30.56 $21.40 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2423A-A LTM9100 Demo Board | Isolated 48V Switch Controller with Telemetry [requires DC590 or DC2026] $150.00
DC2423A-B LTM9100 Demo Board | Isolated 380V Switch Controller with Telemetry [requires DC590 or DC2026] $150.00
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Companion Boards

Part Number Description Price Documentation
DC2026C Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform $75.00
DC590B Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards $50.00
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Click here to view our complete list of demo boards


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