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ISL8702 Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL8702 Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 13 page 1 ® FN9250.2 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2006, 2008. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL8700, ISL8701, ISL8702 Adjustable Quad Sequencer The ISL8700, ISL8701, ISL8702 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 ISL870x provides this function while monitoring the distributed voltage for over and undervoltage compliance. The ISL8700 and ISL8701 operate over the +2.5V to +24V nominal voltage range, whereas the ISL8702 operates over the +2.5V to +12V nominal voltage range. All three 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 ISL8702 provides an input for sequencing on and off operation (SEQ_EN) and for voltage window compliance reporting (FAULT) over the +2.5V to +12V voltage range. Easily daisy chained for more than 4 sequenced signals. Altogether, the ISL870x provides these adjustable features with a minimum of external BOM. See Figure 1 for typical implementation. Features • Adjustable Delay to Subsequent Enable Signal • Adjustable Delay to Sequence Auto Start • Adjustable Distributed Voltage Monitoring • Undervoltage and Overvoltage Adjustable Delay to Auto Start Sequence • I/O Options ENABLE (ISL8700, ISL8702) and ENABLE# (ISL8701) SEQ_EN (ISL8702) • Voltage Compliance Fault Output • Pb-Free (RoHS Compliant) Applications • Power Supply Sequencing • System Timing Function Ordering Information PART NUMBER (Note) PART MARKING TEMP. RANGE (°C) PACKAGE (Pb-free) PKG. DWG. # ISL8700IBZ* ISL 8700IBZ -40 to +85 14 Ld SOIC M14.15 ISL8701IBZ* ISL 8701IBZ -40 to +85 14 Ld SOIC M14.15 ISL8702IBZ* ISL 8702IBZ -40 to +85 14 Ld SOIC M14.15 ISL870xEVAL1 Evaluation Platform *Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. ENABLE_A UV OV GND TB TC TD TIME VIN FAULT* SEQ_EN* ENABLE_B ENABLE_C ENABLE_D 2.5V TO 24V (2.5V TO 12V FOR ISL8702) DC/DC EN Vo1 Vo2 Vo3 Vo4 FIGURE 1. ISL870x IMPLEMENTATION * SEQ_EN and FAULT are not available on ISL8700 and ISL8701 Ru Rm Rl DC/DC EN DC/DC EN DC/DC EN Data Sheet March 21, 2008 |
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