ES1030QI Datasheet, PDF (1/14 Pages) Altera Corporation – Power Rail Sequencer

Enpirion^® Power Datasheet
ES1030QI Power Rail Sequencer
Features
• Four enable outputs
• Four power good feedback signals
• Can be chained with additional devices to achieve
>16 sequenced rails
• Precise, adjustable qualification time for sequenced
supplies (33us to 8.04ms)
• Aggregate PG signal for the logical AND of the
individual PG signals
• Wide 1.8 V to 5.0 V nominal voltage range
• Low power consumption
• Pb-free/ RoHS compliant
• Halogen-free
• STQFN-20 package
Description
The ES1030QI Power Rail Sequencer is a low-power
and small-form factor device ideal for establishing the
power sequencing pattern in small to large multi-rail
power systems (please refer to Figure 6). The part
provides nested sequencing of four outputs per
device, with the ability to attach additional devices in
a sequencing chain for at least 16 outputs. A simple
resistor divider establishes a precise qualification time
window by determining if each power rail is valid at
the correct time. The part uses power good signals
from the regulators to provide feedback of valid
power. Separate fault I/O signals and aggregate PG
signals further enhance the utility of this device. The
sequencer is available in a 2mm x 3mm STQFN
package, optimal for use in dense systems.
Pin Assignments
Figure 1: ES1030QI Pin Assignments
1
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