ISL6536IBZ Renesas

DATASHEET ISL6536 FN9114 Rev 3.00 Four Channel Supervisory IC Jan 25, 2011 The ISL6536 is a four channel supervisory IC designed to Features monitor voltages >, = 0.7V. This IC bias range is from 2.7V Adjustable undervoltage lockout for each supply to 4V but can supervise any positive voltage using an external resistor divider to translate to a lower voltage for Active high PGOOD Output comparison to the internal 0.63V reference. Guaranteed PGOOD Valid to Falling VDD < 1V Once properly biased and enabled when all four voltage VMON Glitch Immunity monitor (VMON) inputs are satisfied the PGOOD output will Pb-Free (RoHS Compliant) be immediately released to go high to signal that voltage is valid on all four rails. Subsequently when the monitored Applications voltage on any rail drops below its user defined threshold point, the PGOOD output is pulled low. Each rails VMON Graphics Cards point is independently adjustable with a resistor divider. The Multi voltage DSPs and Processors PGOOD output is guaranteed to be valid with IC bias lower than 1V. The VMON inputs will ignore 30s transients on the P Voltage Monitoring monitored supplies. The PGOOD output is an open-drain to Embedded Control Systems allow ORing of multiple signals and interfacing to a range of Intelligent Instruments logic levels. The ENABLE input provides for a reset of the PGOOD output when it is pulled down below 0.5V. With an Medical Equipment internal 10uA pull-up to VDD it can be signalled with Network Routers common logic or pulled to ground with a push button switch. Portable Battery-Powered Equipment Typical Application Schematic Set-Top Boxes Telecommunications Systems ISL6536 1 VDD VMON1 8 *OPT 2 PGD VMON2 7 3 EN VMON3 6 4 GND VMON4 5 Ordering Information PART NUMBER PART TEMP. RANGE PACKAGE PKG. (Note 2) MARKING (C) (Pb-free) DWG. ISL6536IBZ 6536 IBZ -40 to +85 8 Ld SOIC M8.15 NOTES: 1. Add -T* suffix for tape and reel. Please refer to TB347 for details on reel specifications. 2. 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. FN9114 Rev 3.00 Page 1 of 7 Jan 25, 2011 V4 in V3 in V2 in V1 inISL6536 Pin Descriptions ISL6536 PIN NAME FUNCTION DESCRIPTION 1 VDD Bias IC from nominal 2.7V to 4V 2 PGOOD PGOOD is the boolean AND function of all the UV inputs being satisfied. This is an open drain output and can be pulled high to the appropriate level with an external resistor. Additionally a 20k pull up to VDD is provided internally. 3 ENABLE Enabling input for supervisory function. Has a 10A pull-up to VDD 4 GND IC ground 5-8 VMON1 These inputs provide for a programmable monitored voltage threshold referenced to an internal 0.63V VMON2 reference. These inputs have a 30s glitch filter to prevent transient upsets from being recognized by VMON3 PGOOD. VMON4 VDD EN 10A VMON1 20k VMON2 FALLING EDGE GLITCH FILTER PGOOD VMON3 VMON4 + ISL6536 633mV - FN9114 Rev 3.00 Page 2 of 7 Jan 25, 2011