LTC2932 - Configurable Six Supply Monitor with Adjustable Reset Timer and Supply Tolerance

Features

  • Simultaneously Monitors Six Supplies
  • 16 User Selectable Combinations of 5V, 3.3V, 3V, 2.5V, 1.8V, 1.5V and ± Adjustable Voltage Thresholds
  • Guaranteed Threshold Accuracy: ±1.5%
  • Selectable Supply Tolerances: 5%, 7.5%, 10%, 12.5% Below Monitored Voltage
  • Reset Disable Pin for Margining Applications
  • Low Supply Current: 52μA
  • Power Supply Glitch Immunity
  • Guaranteed RST for VCC ≥ 1V
  • High Temperature Operation to 125°C
  • 20-Lead TSSOP Package

Typical Application

LTC2932 Typical Application
LTC2932 Typical Application

Description

The LTC2932 is a configurable supply monitor for systems with up to six supply voltages. One of 16 preset or adjustable voltage monitor combinations can be selected using an external resistive divider connected to the mode select pin. The preset voltage thresholds are digitally configurable to 5%, 7.5%, 10%, or 12.5% below the nominal operating voltage. The LTC2932 also features adjustable inputs with a 0.5V nominal threshold. All six open-drain voltage comparator outputs are connected to separate pins for individual supply monitoring.

The reset timeout period is adjustable using an external capacitor. The RST output is guaranteed to be in the correct state for VCC down to 1V and may be disabled during supply margin testing. Each status output has a weak internal pull-up and may be externally pulled up to an external voltage.

The 52μA supply current makes the LTC2932 ideal for power conscious systems and the part may be configured

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
Drawing
RoHS
LTC2932CF#PBF TSSOP-20 F C 05-08-1650 (F20) Yes
LTC2932CF#TRPBF TSSOP-20 F C 05-08-1650 (F20) Yes
LTC2932HF#PBF TSSOP-20 F H 05-08-1650 (F20) Yes
LTC2932HF#TRPBF TSSOP-20 F H 05-08-1650 (F20) Yes
LTC2932IF#PBF TSSOP-20 F I 05-08-1650 (F20) Yes
LTC2932IF#TRPBF TSSOP-20 F I 05-08-1650 (F20) Yes


LTC2932 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
(1-99)
Price
(1k)*
RoHS
LTC2932CF#PBF TSSOP-20 C $5.00 $2.80 Yes
LTC2932CF#TRPBF TSSOP-20 C $2.86 Yes
LTC2932HF#PBF TSSOP-20 H $6.32 $3.54 Yes
LTC2932HF#TRPBF TSSOP-20 H $3.60 Yes
LTC2932IF#PBF TSSOP-20 I $5.75 $3.22 Yes
LTC2932IF#TRPBF TSSOP-20 I $3.28 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.

Click here to view our complete list of demo boards

Applications

  • Desktop and Notebook Computers
  • Multivoltage Systems
  • Telecom Equipment
  • Portable Battery-Powered Equipment
  • Network Servers
  • Automotive

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Design Tools

LTspice

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Models for the following parts are available in LTspice:
LTC2932

Technical Support