MAX6820
Info: : PRODUCTION
searchIcon
cartIcon

MAX6820

SOT23 Power-Supply Sequencers

Show More showmore-icon

Power Supply Sequencers for Dual/Multi-Voltage Systems Control Power On/Power Off Characteristics for Higher System Reliability

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $3.08
Features
  • Adjustable Primary Supply Voltage Monitor (Monitors Down to 0.62V)
  • Internal Charge Pump to Enhance External Secondary Supply N-Channel MOSFET Switch
  • Delay from Primary Supply Good to Secondary Supply Enabled
    • Factory Fixed 200ms (MAX6819)
    • Capacitor Adjustable (MAX6820)
  • Logic Driven ENABLE Input (MAX6819)
  • Immune to Short Voltage Transients
  • Few External Components
  • -40°C to +125°C Operating Temperature Range
  • Small 6-Pin SOT23 Package
Additional Details
show more Icon

The MAX6819/MAX6820 are power-supply sequencers for dual-voltage microprocessors (µPs) and multivoltage systems. These devices monitor a primary supply voltage and enable/disable an external N-channel MOSFET switch for a secondary supply voltage. The MAX6819/MAX6820 control local component voltage sequencing when system power-on/power-off characteristics cannot be guaranteed (supplies come from a multivoltage system bus, silver box, or must be sequenced in different modes for components on the same board). These small power-supply sequencers improve system reliability.

The MAX6819/MAX6820 include an internal voltage reference/comparator with externally adjustable thresholds to monitor the primary power supply. When the primary supply is below the desired threshold, an external secondary supply MOSFET switch is disabled. When the primary supply exceeds the threshold, an internal charge pump is activated and the external MOSFET switch is enabled to connect the secondary supply to the load. The charge pump fully enhances the N-channel MOSFET switch to provide a very low RDS-ON voltage drop. The devices can be connected to support various supply sequencing priorities such as VI/O before VCORE or VCORE before VI/O.

The MAX6819 features a logic-driven EN input to enable/disable the external MOSFET drive and includes an internally fixed 200ms enable timeout period (VPRIMARY GOOD to VSECONDARY ENABLE). The MAX6820 allows the enable timeout period to be adjusted with a single external capacitor. Both devices are specified over the automotive temperature range (-40°C to +125°C) and are available in space-saving 6-pin SOT23 packages.

Applications

  • Digital Signal Processing
  • Dual-Voltage Microprocessors
  • Multivoltage Systems
  • PowerPC® Series Processors
Part Models 2
1ku List Price Starting From $3.08

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX6820UT+
  • HTML
  • HTML
MAX6820UT+T
  • HTML
  • HTML

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 4, 2015

- 1341_CANCELLATION

ASSEMBLY

MAX6820UT+

PRODUCTION

MAX6820UT+T

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 4, 2015

- 1341_CANCELLATION

arrow down

ASSEMBLY

MAX6820UT+

PRODUCTION

MAX6820UT+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Recently Viewed