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LTC1921CMS8 The LTC1921CMS8#TRPBF from Analog Devices Inc. is a dual power supply monitor designed for -48V systems. It features independent monitoring of two supplies, overvoltage and undervoltage detection, and fuse monitoring.
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LTC1921CMS8

Available from 1 distributors
Mfr Name: LT
LT
The LTC1921CMS8#TRPBF from Analog Devices Inc. is a dual power supply monitor designed for -48V systems. It features independent monitoring of two supplies, overvoltage and undervoltage detection, and fuse monitoring.
✓ Total Stock: 1,100 pcs

LTC1921CMS8 Available from 1 distributor

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
1,100 pcs
On Request
1100 pcs On Request 1 On Request On Request 2010+ On Request On Request
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LTC1921CMS8 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Industrial Grade
Lead Spacing
Lead Style
Medical Grade
Military Grade
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Operating Temperature
Operating Voltage
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Tape & Reel
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LTC1921CMS8 Description

Short technical summary and product information.

The Analog Devices Inc. LTC1921CMS8#TRPBF is a dual power supply monitor IC designed to monitor two independent –48V supplies, including their fuses, and drive optoisolators for status indication. It meets standard backplane specifications and replaces multiple discrete components like voltage comparators and references.

 

This device features dual supply overvoltage and undervoltage detection circuits with preset trip thresholds. It accurately detects undervoltage faults at –38.5V ±1V MAX and overvoltage faults at –70V ±1.5V MAX, with undervoltage recovery at –43V ±0.5V MAX. The overvoltage and undervoltage detectors are designed to ignore fast supply transients, preventing false detections.

 

The LTC1921CMS8#TRPBF operates from –10V to –80V with a typical power dissipation of less than 10mW. It is specified for operation from –40°C to 85°C and is available in an 8-lead MSOP package. The device can withstand transient voltages up to 200V/–200V, tolerates DC faults to –100V, and accidental supply reversal to 100V.

 

Applications for the LTC1921CMS8#TRPBF include telecom backplanes, switch cards, networking backplanes, and high voltage fuse monitoring.

LTC1921CMS8 Quick Information

Product Type: Hot Swap Controller
Series: LTC1921
Canonical Name: Analog Devices Inc. LTC1921CMS8#TRPBF Dual Power Supply Monitor
Subcategory: Hot Swap Controller

LTC1921CMS8 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LTC1921CMS8 Features

  • Monitors two independent –48V supplies.
  • Features overvoltage and undervoltage detection.
  • Monitors external supply fuses.
  • Operates from –10V to –80V.
  • Available in 8-lead MSOP package.

LTC1921CMS8 Applications

  • Ideal for telecom backplanes.
  • Suitable for networking switch cards.
  • Used in high voltage fuse monitoring.
  • Designed for -48V power systems.

LTC1921CMS8 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the LTC1921CMS8?

-10V to -80V.

What is the operating temperature range?

-40°C to 85°C.

What package is the LTC1921CMS8 available in?

8-MSOP surface mount package.

What is the typical power dissipation?

Less than 10mW.

What are the undervoltage and overvoltage fault thresholds?

Undervoltage fault at -38.5V ±1V max, overvoltage fault at -70V ±1.5V max.

What transient voltages can the device withstand?

Up to 200V and -200V.

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