DESCRIPTION
The LTC®2924 is a power supply sequencer designed for use with external N-channel MOSFETs or power supplies with shutdown pins. Four power supplies can be fully sequenced by a single LTC2924 and up to five supplies can be sequenced to a sixth master supply. The LTC2924 requires a minimum of external components, using only two feedback resistors per sequenced power supply and a single resistor to set hysteresis.

FEATURES
■ Fully Sequence and Monitor Four Supplies
   – Six with Minimal External Circuitry
■ Cascadable for Additional Supplies
■ Power Off in Reverse Order or Simultaneously
■ Charge Pump Drives External MOSFETs
■ Drives Power Supply Shutdown Pins with No
   External Pull-Up Resistors
■ 10µA Output Current Allows Soft-Starting of Supplies
■ Done Indicator for Both Power On and Power Off
■ Adjustable Time Delay Between Power Supplies
■ Power Good Timer
■ Power Supply Voltage Monitoring and Power
   Sequence Error Detection and Reporting
■ Available in a 16-Lead Narrow SSOP Package

APPLICATIONS
■ Sequenced Power Supplies for ASICs with Multiple I/O and Core Voltages
■ Latch-Up Prevention in Systems with Multiple Power Supplies