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Maxim > Products > [Supervisors, Voltage Monitors, Sequencers]  [Power and Battery Management] 
MAX6880, MAX6881, MAX6882, MAX6883
Dual-/Triple-Voltage, Power-Supply Sequencers/Supervisors


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 408kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX6880–MAX6883 dual-/triple-voltage monitors are designed to sequence power supplies during power-up condition. When all of the voltages exceed their respective thresholds, these devices turn on voltages to the system sequentially, enhancing n-channel MOSFETs used as switches. The time between each sequenced voltage is determined by an external capacitor, thus allowing flexibility in delay timing. The MAX6880/MAX6881 sequence three voltages and the MAX6882/MAX6883 sequence two voltages.

These devices initially monitor all of the voltages and when all of them are within their tolerances, the internal charge pumps enhance external n-channel MOSFETs in a sequential manner to apply the voltages to the system. Internal charge pumps drive the gate voltages 5V above the respective input voltage thereby ensuring the MOSFETs are fully enhanced to reduce the on-resistance.

The MAX6880–MAX6883 feature capacitor-adjustable slew-rate control to provide controlled turn-on characteristics. After all of the voltages reach 92.5% of their final value, a power-good output (MAX6880/MAX6882) signal is active. The power-good output (PG/RST-bar) can be delayed with an external capacitor to create a power-on reset delay. After the initial power-up phase, the MAX6880–MAX6883 continue to monitor the voltages. If any of the voltages falls below its threshold, the MOSFETs are quickly turned off and the voltages are tracked down together. An internal 100 pulldown resistor ensures that the capacitance at the MOSFET's source is discharged quickly. The power-good output goes low to provide a system reset.

The MAX6880–MAX6883 are available in small 4mm x 4mm 24-pin and 16-pin thin QFN packages and specified over the -40°C to +85°C extended operating temperature range.

Key Features   Applications/Uses
  		• Capacitor-Adjustable Power-Up Sequencing Delay
  		• Internal Charge Pumps to Enhance External n-Channel FETs
  		• Capacitor-Adjustable Timeout Period Power-Good Output (MAX6880/MAX6882)
  		• Adjustable Undervoltage Lockout or Logic-Enable Input
  		• Internal 100 Pulldown for Each Output to Discharge Capacitive Load Quickly
  		• 0.5V to 5.5V Nominal IN_/OUT_ Range
  		• 2.7V to 5.5V Operating Voltage Range
  		• Immune to Short Voltage Transients
  		• Small 4mm x 4mm 24-Pin or 16-Pin Thin QFN Packages

    		  
  		• Multivoltage Systems
  		• Networking Systems
  		• Servers/Workstations
  		• Storage Equipment
  		• Telecom

    Key Specifications:  Power-Supply Sequencers and Voltage Trackers
    Part Number Option Interface Input Chan. VIN
    (V)    		 Features Package/Pins Smallest Available Pckg.
    (mm2)    		 Oper. Temp.
    (°C)    		 Price
    max max w/pins See Notes
    MAX6880  Sequence
    Factory Fixed
    R/C Adjustable
    		 3 <6
    Charge Pump Output
    Enable Input
    Reset Output
    Slew Rate Control
    TQFN/24
    		 17 -40 to +85 $2.76 @1k
    MAX6881  3
    Charge Pump Output
    Enable Input
    Slew Rate Control
    TQFN/16
    		 $2.62 @1k
    MAX6882  2
    Charge Pump Output
    Enable Input
    Reset Output
    Slew Rate Control
    TQFN/16
    		 $2.51 @1k
    MAX6883  2
    Charge Pump Output
    Enable Input
    Slew Rate Control
    TQFN/16
    		 $2.39 @1k
    See All Power-Supply Sequencers and Voltage Trackers (35)

    Diagram
    MAX6880, MAX6881, MAX6882, MAX6883: Typical Application Circuit
    Typical Application Circuit

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-16 of 16

    MAX6880 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6880ETG    
    		Active TQFN;24 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0022 (PDF)
    Use pkgcode/variation: T2444-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6880ETG+  
    		Active TQFN;24 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0022 (PDF)
    Use pkgcode/variation: T2444+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6880ETG+T    
    		Active TQFN;24 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0022 (PDF)
    Use pkgcode/variation: T2444+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6880ETG-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX6881 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6881ETE    
    		Active TQFN;16 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0070 (PDF)
    Use pkgcode/variation: T1644-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6881ETE+    
    		Active TQFN;16 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0070 (PDF)
    Use pkgcode/variation: T1644+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6881ETE+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX6881ETE-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX6882 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6882ETE    
    		Active TQFN;16 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0070 (PDF)
    Use pkgcode/variation: T1644-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6882ETE+  
    		Active TQFN;16 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0070 (PDF)
    Use pkgcode/variation: T1644+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6882ETE+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX6882ETE-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX6883 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6883ETE    
    		Active TQFN;16 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0070 (PDF)
    Use pkgcode/variation: T1644-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6883ETE+    
    		Active TQFN;16 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0070 (PDF)
    Use pkgcode/variation: T1644+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6883ETE+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX6883ETE-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

    More Information
  		• New Product Press Release 2005-08-30

    Related Products
    MAX6819, MAX6820 SOT23 Power-Supply Sequencers
    MAX6391, MAX6392 Dual-Voltage µP Supervisory Circuits with Sequenced Reset Outputs
    MAX6892, MAX6893, MAX6894 Pin-Selectable, Octal/Hex/Quad, Power-Supply Sequencers/Supervisors
    MAX6877, MAX6878, MAX6879 Dual-/Triple-Voltage, Power-Supply Trackers/Sequencers/Supervisors

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    Document Ref.: 19-3772; Rev 1; 2005-11-03
    This page last modified: 2006-12-05


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