Adjustable Quad Sequencer
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Overview
Description
The ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A, ISL8705A family of ICs provide four delay adjustable sequenced outputs while monitoring an input voltage all with a minimum of external components. High performance DSP, FPGA, µP and various subsystems require input power sequencing for proper functionality at initial power-up and the ISL870XA provides this function while monitoring the distributed voltage for over and undervoltage compliance. These ICs operate over the +3. 3V to +24V nominal voltage range. All have a user adjustable time from UV and OV voltage compliance to sequencing start via an external capacitor when in auto start mode and adjustable time delay to subsequent ENABLE output signal via external resistors. Additionally, the ISL8702A, ISL8703A, ISL8704A and ISL8705A provide I/O for sequencing on and off operation (SEQ_EN) and for voltage window compliance reporting (FAULT) over the +3. 3V to +24V nominal voltage range. Easily daisy chained for more than 4 sequenced signals. Altogether, the ISL870XA provides these adjustable features with a minimum of external BOM.
Features
- Adjustable Delay to Subsequent Enable Signal
- Adjustable Delay to Sequence Auto Start
- Adjustable Distributed Voltage Monitoring
- Under and Overvoltage Adjustable Delay to Auto Start Sequence
- I/O Options
- ENABLE (ISL8700A, ISL8702A, ISL8704A) and
- ENABLE# (ISL8701A, ISL8703A, ISL8705A)
- SEQ_EN (ISL8702A, ISL8703A) and
- SEQ_EN# (ISL8704A, ISL8705A)
- Voltage Compliance Fault Output
- Pb-Free (RoHS Compliant)
Comparison
Applications
Applications
- Power Supply Sequencing
- System Timing Function
Documentation
= Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 654 KB | |
| Brochure | PDF 8.73 MB | |
| End Of Life Notice | PDF 1.17 MB | |
| Product Change Notice | PDF 266 KB | |
| White Paper | PDF 295 KB | |
| Product Change Notice | PDF 77 KB | |
| Product Change Notice | PDF 108 KB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| SOICN | Reel | 5000 |
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