DESCRIPTION
The LTC®2901 is a programmable supply monitor for systems with up to four supply voltages. One of 16 preset or adjustable voltage monitor combinations can be selected using an external resistor divider connected to the program pin. The preset voltage thresholds are accurate to ±1.5% over temperature. All four voltage comparator outputs are connected to separate pins for individual supply monitoring.

FEATURES
■ Simultaneously Monitors Four Supplies
■ 16 User Selectable Combinations of 5V, 3.3V, 3V,
   2.5V, 1.8V, 1.5V and/or ±Adj Voltage Thresholds
■ Guaranteed Threshold Accuracy: ±1.5% of
   Monitored Voltage Over Temperature
■ Selectable Supply Tolerance: 5% and 10% Below
   Monitored Voltage (LTC2901-3/LTC2901-4)
■ Low Supply Current: 43µA Typ
■ Adjustable Reset Time
■ Adjustable Watchdog Time
■ Open-Drain RST Output (LTC2901-1/LTC2901-3)
■ Push-Pull RST Output (LTC2901-2/LTC2901-4)
■ Individual Nondelayed Monitor Output for Each Supply
■ Power Supply Glitch Immunity
■ Guaranteed RST for VCC ≥ 1V
■ 16-Lead Narrow SSOP Package

APPLICATIONS
■ Desktop and Notebook Computers
■ Multivoltage Systems
■ Telecom Equipment
■ Portable Battery-Powered Equipment
■ Network Servers