Power Management System Supervisor, Monitor and Control Supervisory Circuits Triple Supply Monitors

LTC2911 - Precision Triple Supply Monitor with Power-Fail Comparator

Features

  • Ultralow Voltage Reset: VCC = 0.5V Guaranteed
  • Monitors Three Inputs Simultaneously:
    3.3V, 5V, ADJ (LTC2911-1)
    • 3.3V, 2.5V, ADJ (LTC2911-2)
    3.3V, 1.8V, ADJ (LTC2911-3)
    3.3V, 1.2V, ADJ (LTC2911-4)
    3.3V, ADJ, ADJ (LTC2911-5)
  • ±1.5% Threshold Accuracy
  • Power-Fail Monitor
  • RST State Can Be Held for Margining
  • Low Supply Current: 30μA Typical
  • Input Glitch Immunity
  • Adjustable Reset Timeout Period
  • Selectable Internal Timeout Saves Components
  • Space Saving 8-Lead TSOT-23 and 3mm × 2mm DFN Packages
 

Typical Application

LTC2911 Typical Application
LTC2911 Typical Application

Description

The LTC2911 is a low power, high accuracy triple supply monitor with a power-fail comparator. Reset timeout may be selected with an external capacitor or set to an internally generated 200ms.

The V1 pin monitors a 3.3V supply. The V2 pin monitors a 5V, 2.5V, 1.8V, 1.2V or adjustable supply. A third adjustable input has a nominal 0.5V threshold allowing a resistive divider to configure its threshold. All three comparators feature a tight 1.5% threshold accuracy over the entire operating temperature range while a glitch filter ensures reliable reset operation.

A spare comparator can be configured to provide early warning of a low voltage condition. It causes the PFO output to pull low when the voltage of the PFI input falls below 0.5V, allowing the power-fail threshold to be configured with a resistive divider. A latch feature on the TMR pin allows the RST output to be latched to prevent system resets, simplifying margin testing.

 

Packaging

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

SOT-23, DFN-8

LTC2911 Package Drawing
LTC2911 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC2911CDDB-1#TRMPBF DFN 8 C $2.17 $1.57 View
LTC2911CDDB-1#TRPBF DFN 8 C $2.17 $1.52 View
LTC2911CDDB-2#TRMPBF DFN 8 C $2.17 $1.57 View
LTC2911CDDB-2#TRPBF DFN 8 C $2.17 $1.52 View
LTC2911CDDB-3#TRMPBF DFN 8 C $2.17 $1.57 View
LTC2911CDDB-3#TRPBF DFN 8 C $2.17 $1.52 View
LTC2911CDDB-4#TRMPBF DFN 8 C $2.17 $1.57 View
LTC2911CDDB-4#TRPBF DFN 8 C $2.17 $1.52 View
LTC2911CDDB-5#TRMPBF DFN 8 C $2.17 $1.57 View
LTC2911CDDB-5#TRPBF DFN 8 C $2.17 $1.52 View
LTC2911CTS8-1#TRMPBF SOT 8 C $2.17 $1.57 View
LTC2911CTS8-1#TRPBF SOT 8 C $2.17 $1.52 View
LTC2911CTS8-2#TRMPBF SOT 8 C $2.17 $1.57 View
LTC2911CTS8-2#TRPBF SOT 8 C $2.17 $1.52 View
LTC2911CTS8-3#TRMPBF SOT 6 C $2.17 $1.57 View
LTC2911CTS8-3#TRPBF SOT 8 C $2.17 $1.52 View
LTC2911CTS8-4#TRMPBF SOT 8 C $2.17 $1.57 View
LTC2911CTS8-4#TRPBF SOT 8 C $2.17 $1.52 View
LTC2911CTS8-5#TRMPBF SOT 8 C $2.17 $1.57 View
LTC2911CTS8-5#TRPBF SOT 8 C $2.17 $1.52 View
LTC2911HDDB-1#TRMPBF DFN 8 H $2.87 $2.06 View
LTC2911HDDB-1#TRPBF DFN 8 H $2.87 $2.01 View
LTC2911HDDB-2#TRMPBF DFN 8 H $2.87 $2.06 View
LTC2911HDDB-2#TRPBF DFN 8 H $2.87 $2.01 View
LTC2911HDDB-3#TRMPBF DFN 8 H $2.87 $2.06 View
LTC2911HDDB-3#TRPBF DFN 8 H $2.87 $2.01 View
LTC2911HDDB-4#TRMPBF DFN 8 H $2.87 $2.06 View
LTC2911HDDB-4#TRPBF DFN 8 H $2.87 $2.01 View
LTC2911HDDB-5#TRMPBF DFN 8 H $2.87 $2.06 View
LTC2911HDDB-5#TRPBF DFN 8 H $2.87 $2.01 View
LTC2911HTS8-1#TRMPBF SOT 8 H $2.87 $2.06 View
LTC2911HTS8-1#TRPBF SOT 8 H $2.87 $2.01 View
LTC2911HTS8-2#TRMPBF SOT 8 H $2.87 $2.06 View
LTC2911HTS8-2#TRPBF SOT 8 H $2.87 $2.01 View
LTC2911HTS8-3#TRMPBF SOT 8 H $2.87 $2.06 View
LTC2911HTS8-3#TRPBF SOT 8 H $2.87 $2.01 View
LTC2911HTS8-4#PBF SOT 8 H $2.87 View
LTC2911HTS8-4#TRMPBF SOT 8 H $2.87 $2.06 View
LTC2911HTS8-4#TRPBF SOT 8 H $2.87 $2.01 View
LTC2911HTS8-5#TRMPBF SOT 8 H $2.87 $2.06 View
LTC2911HTS8-5#TRPBF SOT 8 H $2.87 $2.01 View
LTC2911IDDB-1#TRMPBF DFN 8 I $2.50 $1.80 View
LTC2911IDDB-1#TRPBF DFN 8 I $2.50 $1.75 View
LTC2911IDDB-2#TRMPBF DFN 8 I $2.50 $1.80 View
LTC2911IDDB-2#TRPBF DFN 8 I $2.50 $1.75 View
LTC2911IDDB-3#TRMPBF DFN 8 I $2.50 $1.80 View
LTC2911IDDB-3#TRPBF DFN 8 I $2.50 $1.75 View
LTC2911IDDB-4#TRMPBF DFN 8 I $2.50 $1.80 View
LTC2911IDDB-4#TRPBF DFN 8 I $2.50 $1.75 View
LTC2911IDDB-5#TRMPBF DFN 8 I $2.50 $1.80 View
LTC2911IDDB-5#TRPBF DFN 8 I $2.50 $1.75 View
LTC2911ITS8-1#TRMPBF SOT 8 I $2.50 $1.80 View
LTC2911ITS8-1#TRPBF SOT 8 I $2.50 $1.75 View
LTC2911ITS8-2#TRMPBF SOT 8 I $2.50 $1.80 View
LTC2911ITS8-2#TRPBF SOT 8 I $2.50 $1.75 View
LTC2911ITS8-3#TRMPBF SOT 8 I $2.50 $1.80 View
LTC2911ITS8-3#TRPBF SOT 8 I $2.50 $1.75 View
LTC2911ITS8-4#TRMPBF SOT 8 I $2.50 $1.80 View
LTC2911ITS8-4#TRPBF SOT 8 I $2.50 $1.75 View
LTC2911ITS8-5#TRMPBF SOT 8 I $2.50 $1.80 View
LTC2911ITS8-5#TRPBF SOT 8 I $2.50 $1.75 View
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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.

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Applications

  • Network Servers
  • Desktop and Notebook Computers
  • Automotive and Industrial Electronics
 

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