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MAX16027 Dataheets PDF



Part Number MAX16027
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description Sequencing/Supervisory Circuits
Datasheet MAX16027 DatasheetMAX16027 Datasheet (PDF)

19-0525; Rev 1; 6/06 Dual-/Triple-/Quad-Voltage, CapacitorAdjustable, Sequencing/Supervisory Circuits General Description The MAX16025–MAX16030 are dual-/triple-/quad-voltage monitors and sequencers that are offered in a small TQFN package. These devices offer enormous design flexibility as they allow fixed and adjustable thresholds to be selected through logic inputs and provide sequence timing through small external capacitors. These versatile devices are ideal for use in a wide variety of mu.

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19-0525; Rev 1; 6/06 Dual-/Triple-/Quad-Voltage, CapacitorAdjustable, Sequencing/Supervisory Circuits General Description The MAX16025–MAX16030 are dual-/triple-/quad-voltage monitors and sequencers that are offered in a small TQFN package. These devices offer enormous design flexibility as they allow fixed and adjustable thresholds to be selected through logic inputs and provide sequence timing through small external capacitors. These versatile devices are ideal for use in a wide variety of multivoltage applications. www.DataSheet4U.com As the voltage at each monitored input exceeds its Features o 2.2V to 28V Operating Voltage Range o Fixed Thresholds for 3.3V, 2.5V, 1.8V, 1.5V, and 1.2V Systems o 1.5% Accurate Adjustable Threshold Monitors Voltages Down to 0.5V o 2.7% Accurate Fixed Thresholds Over Temperature o Fixed (140ms min)/Capacitor-Adjustable Delay Timing o Independent Open-Drain/Push-Pull Outputs o Enable Inputs for Each Monitored Voltage o 9 Logic-Selectable Threshold Options o Manual Reset and Tolerance Select (5%/10%) Inputs o Small, 4mm x 4mm TQFN Package o Fully Specified from -40°C to +125°C MAX16025–MAX16030 respective threshold, its corresponding output goes high after a propagation delay or a capacitor-set time delay. When a voltage falls below its threshold, its respective output goes low after a propagation delay. Each detector circuit also includes its own enable input, allowing the power-good outputs to be shut off independently. The independent output for each detector is available with push-pull or open-drain configuration with the open-drain version capable of supporting voltages up to 28V, thereby allowing them to interface to shutdown and enable inputs of various DC-DC regulators. Each detector can operate independently as four separate supervisory circuits or can be daisy-chained to provide controlled power-supply sequencing. The MAX16025–MAX16030 also include a reset function that deasserts only after all of the independently monitored voltages exceed their threshold. The reset timeout is internally fixed or can be adjusted externally. These devices are offered in a 4mm x 4mm TQFN package and are fully specified from -40°C to +125°C. Ordering Information PART* MAX16025TE+ MAX16026TE+ MAX16027TP+ MAX16028TP+ MAX16029TG+ TEMP RANGE -40°C to +125°C -40°C to +125°C -40°C to +125°C -40°C to +125°C -40°C to +125°C PINPACKAGE 16 TQFN 16 TQFN 20 TQFN 20 TQFN 24 TQFN PKG CODE T1644-4 T1644-4 T2044-3 T2044-3 T2444-4 Applications Multivoltage Systems DC-DC Supplies Servers/Workstations Storage Systems Networking/Telecommunication Equipment MAX16030TG+ -40°C to +125°C 24 TQFN T2444-4 +Denotes lead-free package. *For tape and reel, add a “T” after the “+.” All tape and reel orders are available in 2.5k increments. Pin Configurations RESET OUT1 OUT3 18 MR 19 CRESET 20 17 16 15 14 13 12 11 10 TH1 EN4 EN3 EN2 EN1 GND TH0 9 8 7 1 VCC 2 IN1 3 IN2 4 IN3 5 IN4 6 TOL TOP VIEW Selector Guide PART MAX16025 MAX16026 MAX16027 MAX16028 MAX16029 MAX16030 MONITORED VOLTAGES 2 2 3 3 4 4 INDEPENDENT OUTPUTS 2 (Open-drain) 2 (Push-pull) 3 (Open-drain) 3 (Push-pull) 4 (Open-drain) 4 (Push-pull) RESET OUTPUT Open-drain Push-pull Open-drain Push-pull Open-drain Push-pull CDLY4 21 CDLY3 22 CDLY2 23 CDLY1 24 MAX16029 MAX16030 + THIN QFN (4mm x 4mm) Pin Configurations continued at end of data sheet. 1 ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. OUT2 OUT4 Dual-/Triple-/Quad-Voltage, CapacitorAdjustable, Sequencing/Supervisory Circuits MAX16025–MAX16030 ABSOLUTE MAXIMUM RATINGS CRESET ......................................................-0.3V to (VCC + 0.3V) Input/Output Current (all pins)..........................................±20mA Continuous Power Dissipation (TA = +70°C) 16-Pin TQFN (derate 25mW/°C above +70°C) ...........2000mW 20-Pin TQFN (derate 25.6mW/°C above +70°C) ........2051mW 24-Pin TQFN (derate 27.8mW/°C above +70°C) ........2222mW Operating Temperature Range .........................-40°C to +125°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C (All voltages referenced to GND.) VCC .........................................................................-0.3V to +30V EN1–EN4 ....................................................-0.3V to (VCC + 0.3V) OUT1–OUT4 (push-pull).............................-0.3V to (VCC + 0.3V) OUT1–OUT4 (open-drain) ......................................-0.3V to +30V RESET (push-pull) ......................................-0.3V to (VCC + 0.3V) RESET (open-drain) ..................................................-0.3V to 30V IN1–IN4.....................................................


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