FEATURES
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
Analog Devices (NASDAQ: ADI) is a world leader in the design, manufacture, and marketing of a broad portfolio of high performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in virtually all types of electronic equipment. Since our inception in 1965, we have focused on solving the engineering challenges associated with signal processing in electronic equipment. Used by over 100,000 customers worldwide, our signal processing products play a fundamental role in converting, conditioning, and processing real-world phenomena such as temperature, pressure, sound, light, speed, and motion into electrical signals to be used in a wide array of electronic devices.