DATASHEET ISL8700, ISL8701, ISL8702 FN9250 Rev 2.00 Adjustable Quad Sequencer March 21, 2008 The ISL8700, ISL8701, ISL8702 family of ICs provide four Features delay adjustable sequenced outputs while monitoring an Adjustable Delay to Subsequent Enable Signal input voltage all with a minimum of external components. Adjustable Delay to Sequence Auto Start High performance DSP, FPGA, P and various subsystems require input power sequencing for proper functionality at Adjustable Distributed Voltage Monitoring initial power-up and the ISL870x provides this function while Undervoltage and Overvoltage Adjustable Delay to Auto monitoring the distributed voltage for over and undervoltage Start Sequence compliance. I/O Options The ISL8700 and ISL8701 operate over the +2.5V to +24V ENABLE (ISL8700, ISL8702) and ENABLE (ISL8701) nominal voltage range, whereas the ISL8702 operates over SEQ EN (ISL8702) the +2.5V to +12V nominal voltage range. All three have a Voltage Compliance Fault Output user adjustable time from UV and OV voltage compliance to sequencing start via an external capacitor when in auto start Pb-Free (RoHS Compliant) mode and adjustable time delay to subsequent ENABLE output signal via external resistors. Applications Additionally, the ISL8702 provides an input for sequencing Power Supply Sequencing on and off operation (SEQ EN) and for voltage window System Timing Function compliance reporting (FAULT) over the +2.5V to +12V voltage range. Easily daisy chained for more than 4 sequenced signals. 2.5V TO 24V (2.5V TO 12V FOR ISL8702) Altogether, the ISL870x provides these adjustable features EN DC/DC Vo1 with a minimum of external BOM. See Figure 1 for typical VIN Ru ENABLE A implementation. SEQ EN* ENABLE B ENABLE C EN Ordering Information UV DC/DC Vo2 ENABLE D PART NUMBER PART TEMP. PACKAGE PKG. Rm OV FAULT* (Note) MARKING RANGE (C) (Pb-free) DWG. EN DC/DC Vo3 GND TB TC TD TIME ISL8700IBZ* ISL 8700IBZ -40 to +85 14 Ld SOIC M14.15 Rl ISL8701IBZ* ISL 8701IBZ -40 to +85 14 Ld SOIC M14.15 EN DC/DC Vo4 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 * SEQ EN and FAULT are not available on ISL8700 and ISL8701 on reel specifications. FIGURE 1. ISL870x IMPLEMENTATION 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. FN9250 Rev 2.00 Page 1 of 13 March 21, 2008ISL8700, ISL8701, ISL8702 Pinouts ISL8700 ISL8701 ISL8702 (14 LD SOIC) (14 LD SOIC) (14 LD SOIC) TOP VIEW TOP VIEW TOP VIEW ENABLE D 1 14 VIN ENABLE D 1 14 VIN ENABLE D 1 14 VIN ENABLE C TD ENABLE C TD ENABLE C TD 2 13 2 13 2 13 ENABLE B 3 12 TC ENABLE B 3 12 TC ENABLE B 3 12 TC ENABLE A 4 11 TB ENABLE A 4 11 TB ENABLE A 4 11 TB OV TIME OV TIME OV TIME 5 10 5 10 5 10 UV NC UV NC UV SEQ EN 6 9 6 9 6 9 GND NC GND NC GND FAULT 78 78 78 FN9250 Rev 2.00 Page 2 of 13 March 21, 2008