Key facts
- Brand
- Linear Technology
- Model
- LTC4223-1
- Documents
- 2
- Languages
- EN
- Last added
- 2011-10-14
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Linear Technology LTC4223-1/LTC4223-2 Dual Supply Hot Swap Controller Datasheet
The LTC4223‑1/LTC4223‑2 is a dual‑supply hot‑swap controller designed for Advanced Mezzanine Card (AMC) and MicroTCA backplanes. It manages a 12 V main supply and a 3.3 V auxiliary supply, providing in‑rush current limiting, short‑circuit protection, adjustable current limit, and thermal shutdown. The LTC4223‑1 version includes a latch‑off circuit breaker, while the LTC4223‑2 version adds automatic retry after a fault.
The document provides absolute maximum ratings, electrical characteristics, pin descriptions, functional diagrams, and typical performance curves. It also includes package information for SSOP and DFN variants and outlines the turn‑on sequence and operation of the internal circuitry.
Linear Technology LTC4223-1 specifications
| 12V IN supply voltage range | –0.3 V to 20 V |
|---|---|
| AUXIN supply voltage range | –0.3 V to 10 V |
| VCC supply voltage range | –0.3 V to 7 V |
| Operating temperature range (C‑type packages) | 0 °C to 70 °C |
Source: Linear Technology LTC4223-1/LTC4223-2 Dual Supply Hot Swap Controller Datasheet
All Linear Technology LTC4223-1 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the difference between the LTC4223‑1 and LTC4223‑2?
The LTC4223‑1 includes a latch‑off circuit breaker, while the LTC4223‑2 provides automatic retry after a fault.
From: Linear Technology LTC4223-1/LTC4223-2 Dual Supply Hot Swap Controller Datasheet
How is the 12 V supply turned on?
A rising edge on the 12ON pin turns on the external N‑channel MOSFET that drives the 12 V supply.
From: Linear Technology LTC4223-1/LTC4223-2 Dual Supply Hot Swap Controller Datasheet
What does the LTC4223‑1 version do after a fault?
The LTC4223‑1 latches off after a fault.
From: Linear Technology LTC4223-1/LTC4223-2 Dual Supply Hot Swap Controller Datasheet
What does the LTC4223‑2 version do after a fault?
The LTC4223‑2 automatically retries after a fault.
From: Linear Technology LTC4223-1/LTC4223-2 Dual Supply Hot Swap Controller Datasheet