LTC2932 Con gurable Six Supply Monitor with Adjustable Reset Timer and Supply Tolerance FEATURES DESCRIPTION Simultaneously Monitors Six Supplies The LTC 2932 is a con gurable supply monitor for sys- 16 User Selectable Combinations of tems with up to six supply voltages. One of 16 preset or 5V, 3.3V, 3V, 2.5V, 1.8V, 1.5V and adjustable voltage monitor combinations can be selected Adjustable Voltage Thresholds using an external resistive divider connected to the mode Guaranteed Threshold Accuracy: 1.5% select pin. The preset voltage thresholds are digitally Selectable Supply Tolerances: 5%, 7.5%, 10%, con gurable to 5%, 7.5%, 10%, or 12.5% below the 12.5% Below Monitored Voltage nominal operating voltage. The LTC2932 also features Reset Disable Pin for Margining Applications adjustable inputs with a 0.5V nominal threshold. All six Low Supply Current: 52A open-drain voltage comparator outputs are connected to Power Supply Glitch Immunity separate pins for individual supply monitoring. Guaranteed RST for V 1V CC The reset timeout period is adjustable using an external High Temperature Operation to 125C capacitor. The RST output is guaranteed to be in the 20-Lead TSSOP Package correct state for V down to 1V and may be disabled CC during supply margin testing. Each status output has a APPLICATIONS weak internal pull-up and may be externally pulled up to Desktop and Notebook Computers an external voltage. Multivoltage Systems The 52A supply current makes the LTC2932 ideal for Telecom Equipment power conscious systems and the part may be con gured Portable Battery-Powered Equipment to monitor less than six inputs. Network Servers L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Automotive All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6967591, 7119714, 7239251. TYPICAL APPLICATION Six Supply Monitor 12V (ADJ), Voltage Threshold Con guration Table 5V, 3.3V, 2.5V, 1.8V, 1.2V (ADJ) V1 (V) V2 (V) V3 (V) V4 (V) V5 (V) V6 (V) 12V 5 3.3 2.5 1.8 ADJ ADJ 5V 5 3.3 2.5 1.5 ADJ ADJ 3.3V SYSTEM 2.5V 5 3.3 2.5 ADJ ADJ ADJ LOGIC 1.8V 5 3.3 1.8 ADJ ADJ ADJ 1.2V 5 3.3 1.8 ADJ ADJ ADJ 10k 5 3.3 ADJ ADJ ADJ ADJ POWER 2150k 124k GOOD 1% 1% 5 3.3 ADJ ADJ ADJ ADJ V1 5 3 2.5 ADJ ADJ ADJ V2 5 3 1.8 ADJ ADJ ADJ V3 0.1F V4 5 3 ADJ ADJ ADJ ADJ LTC2932 0.1F V5 3.3 2.5 1.8 1.5 ADJ ADJ RDIS V6 100k 100k 3.3 2.5 1.8 ADJ ADJ ADJ VREF 1% 1% R1 RST 3.3 2.5 1.8 ADJ ADJ ADJ 59k 2932 TA01 1% VPG t = 94ms 3.3 2.5 1.5 ADJ ADJ ADJ RST T0 T1 CRT GND R2 3.3 2.5 ADJ ADJ ADJ ADJ C 40.2k RT 1% 47nF 3.3 2.5 ADJ ADJ ADJ ADJ 2932fb 1 COMP1 COMP2 COMP3 COMP4 COMP5 COMP6LTC2932 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2, 3) TOP VIEW V1, V2, V3, V4, V5, V6, VPG ........................0.3V to 7V COMP5 1 20 COMP6 RST, COMP1-6, T0, T1.................................0.3V to 7V V5 2 19 V6 CRT, VREF, RDIS ............................0.3V to (V + 0.3V) CC COMP3 3 18 COMP2 Reference Load Current (I ) .............................. 1mA VREF COMP1 4 17 COMP4 V4 Input Current (ADJ Mode) ..............................1mA V3 5 16 V2 RST, COMP1-6 Currents ......................................10mA V1 6 15 V4 Operating Temperature Range CRT 7 14 VREF LTC2932C ................................................ 0C to 70C RST 8 13 VPG LTC2932I..............................................40C to 85C T0 9 12 GND LTC2932H ..........................................40C to 125C RDIS 10 11 T1 Storage Temperature Range ...................65C to 150C F PACKAGE 20-LEAD PLASTIC TSSOP Lead Temperature (Soldering, 10 sec) .................. 300C T = 130C, = 90C/W JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2932F PBF LTC2932CF TRPBF LTC2932F 20-Lead Plastic TSSOP 0C to 70C LTC2932F PBF LTC2932IF TRPBF LTC2932F 20-Lead Plastic TSSOP 40C to 85C LTC2932F PBF LTC2932HF TRPBF LTC2932F 20-Lead Plastic TSSOP 40C to 125C Consult LTC Marketing for information on non-standard lead based nish parts. *Temperature grades are identi ed by a label on the shipping container. For more information on lead free part marking, go to: