LTC4210-1IS6

The LTC4210-1IS6 is a hot-swap controller from Linear Technology (now part of Analog Devices) designed to safely insert and remove boards from live power supplies. It features adjustable current limiting, fast fault response, and MOSFET gate control to prevent voltage spikes and excessive inrush current.
Key specifications:
- Operating Voltage: 2.9V to 6V
- Adjustable Current Limit via external sense resistor
- Fast 2µs Overcurrent Response
- SOT-23-6 Package (small footprint)
Applications include servers, telecom systems, and hot-pluggable boards where controlled power-up sequencing is critical. The -1IS6 variant has a fixed 100ms circuit breaker timeout.
For detailed use, refer to the datasheet for external component selection and layout guidelines.

The LTC4210-1IS6 is a 6-pin SOT-23 hot-swap controller.
Pin Functions:
1. GND (Pin 1): Ground reference.
2. ON (Pin 2): Active-high enable input (turns on MOSFET when high).
3. FB (Pin 3): Feedback for current limit adjustment (connects to sense resistor).
4. VCC (Pin 4): Supply voltage input (2.9V to 6V).
5. GATE (Pin 5): Drives external N-MOSFET gate for soft-start and current limiting.
6. SENSE (Pin 6): Monitors load current via external sense resistor.
Key Function: Provides inrush current control and fault protection for hot-swap applications. The "-1" variant has a fixed 25mV current-sense threshold.

The LTC4210-1IS6 is manufactured by Linear Technology Corporation, now part of Analog Devices, Inc. after its acquisition in 2017.
Linear Technology was a leading semiconductor company specializing in high-performance analog integrated circuits, including power management, data conversion, and signal conditioning products. Known for innovation and reliability, its components are widely used in industrial, automotive, and communications applications.
Analog Devices, Inc. (ADI) is a global leader in analog, mixed-signal, and digital signal processing (DSP) technologies, serving diverse markets like healthcare, automotive, and consumer electronics. The merger strengthened ADI's portfolio in precision analog solutions.
The LTC4210-1IS6 is a hot-swap controller, reflecting Linear Technology's expertise in power management.

The LTC4210-1IS6 comes in a SOT-23-6 package. This small, surface-mount package is compact and suitable for space-constrained applications. It has six pins and is commonly used for power management ICs. The "IS6" suffix indicates the SOT-23-6 package type.