LTC2907 - Precision Dual Supply Monitors with One Pin-Selectable Threshold and One Adjustable Input

The LTC®2906/LTC2907 are dual supply monitors intended for systems with multiple supply voltages. The dual supply monitors have a common reset output with delay (200ms for the LTC2906 and adjustable using an external capacitor for the LTC2907). These products provide a precise, space-conscious and micropower solution for supply monitoring.

The LTC2906/LTC2907 feature a tight 1.5% threshold accuracy over the whole operating temperature range and glitch immunity to ensure reliable reset operation without false triggering. The open drain RST output state is guaranteed to be in the correct state for V1 and/or VCC down to 1V.

The LTC2906/LTC2907 also feature one adjustable input with a nominal threshold level at 0.5V, another input with three possible input threshold levels, and three supply tolerances for possible margining. These features provide versatility for any kind of system requiring dual supply monitors. Two three-state input pins program the threshold and tolerance level without requiring any external components.

Features
  • Monitors Two Inputs Simultaneously
  • Three Threshold Selections for 5V, 3.3V or 2.5V Supplies
  • Low Voltage Adjustable Input (0.5V)
  • Three Supply Tolerances (5%, 7.5%, 10%)
  • Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature
  • Internal VCC Auto Select
  • Power Supply Glitch Immunity
  • 200ms Reset Time Delay (LTC2906 Only)
  • Adjustable Reset Time Delay (LTC2907 Only)
  • Open Drain RST Output
  • Guaranteed RST for V1 >= 1V or VCC >=1V
  • Low Profile (1mm) SOT-23 (ThinSOT™) and Plastic (3mm x 2mm) DFN Packages
Typical Application

Applications
  • Desktop and Notebook Computers
  • Handheld Devices
  • Network Servers
  • Core, I/O Monitor
Packaging

Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2907CDDB#PBF3x2 DFN-8C$1.97
LTC2907CDDB#TRMPBF3x2 DFN-8C$1.97$1.43
LTC2907CDDB#TRPBF3x2 DFN-8C$1.97$1.41
LTC2907CTS8#PBFSOT-23C$1.97
LTC2907CTS8#TRMPBFSOT-23C$1.97$1.43
LTC2907CTS8#TRPBFSOT-23C$1.97$1.41
LTC2907IDDB#PBF3x2 DFN-8I$2.23
LTC2907IDDB#TRMPBF3x2 DFN-8I$2.23$1.58
LTC2907IDDB#TRPBF3x2 DFN-8I$2.23$1.56
LTC2907ITS8#PBFSOT-23I$2.23
LTC2907ITS8#TRMPBFSOT-23I$2.23$1.58
LTC2907ITS8#TRPBFSOT-23I$2.23$1.56
Datasheet
Reliability Data
Product Selector Card
LT Journal
Related Product
LTC2906/LTC2907 - Precision Dual Supply Monitors with One Pin-Selectable Threshold and One Adjustable Input
LTC2907 Package Drawing LTC2907
R413 Reliability Data
Voltage Monitors & Supervisors Quick Guide
Feb 2004 Compact, Versatile, Accurate, 3-State Programmable Power Supply Supervisors
LTC2907 Footprints and Symbols