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3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors

Industry's Smallest, Lowest-Power Voltage Detectors

Product Details

Key Features

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 2.5
Reset Out Active Low
Open Drain
tRESET (min) <1ms
Watchdog Feature No Watchdog
ICC (µA) (max) 0.5
Package/Pins SC70/3
SOT23/3
Budgetary
Price (See Notes)
1.05
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Simplified Block Diagram

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Parameters

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 2.5
Reset Out Active Low
Open Drain
tRESET (min) <1ms
Watchdog Feature No Watchdog
ICC (µA) (max) 0.5
Package/Pins SC70/3
SOT23/3
Budgetary
Price (See Notes)
1.05

Key Features

  • Ultra-Low 500nA Supply Current (MAX6375/MAX6376/MAX6377)
  • Thresholds Available from 2.20V to 4.63V in Approximately 100mV Increments
  • ±2.5% Threshold Accuracy Over Temperature
  • Low Cost
  • Available in Three Versions: Push-Pull active-low OUT, Push-Pull OUT, and Open-Drain active-low OUT
  • Power-Supply Transient Immunity
  • No External Components
  • Available in Either a 3-Pin SC70 or 3-Pin SOT23 Package

Applications/Uses

  • Load Switching/Power Sequencing
  • Portable Battery-Powered Equipment
  • Power-Supply Monitoring in Digital/Analog Systems
  • Precision Battery Monitoring

Description

The MAX6375-MAX6380 are ultra-low-power circuits used for monitoring battery, power-supply, and regulated system voltages. Each detector contains a precision bandgap reference, comparator, and internally trimmed resistors that set specified trip threshold voltages. These devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltages from 2.5V to 5V.

These circuits perform a single function: they assert an output signal whenever the VCC supply voltage falls below a preset threshold. The devices are differentiated by their output logic configurations and preset threshold voltages. The MAX6375/MAX6378 (push-pull) and MAX6377/MAX6380 (open-drain) have an active-low output (active-low OUT is logic low when VCC is below VTH). The MAX6376/MAX6379 have an active-high push-pull output (OUT is logic high when VCC is below VTH). All parts are guaranteed to be in the correct output logic state for VCC down to 1V. The detector is designed to ignore fast transients on VCC. The MAX6375/MAX6376/ MAX6377 have voltage thresholds between 2.20V and 3.08V in approximately 100mV increments. The MAX6378/MAX6379/MAX6380 have voltage thresholds between 3.30V and 4.63V in approximately 100mV increments.

Ultra-low supply current of 500nA (MAX6375/MAX6376/MAX6377) makes these parts ideal for use in portable equipment. All six devices are available in a space-saving SC70 package or in a tiny SOT23 package.

Simplified Block Diagram

MAX6375, MAX6376, MAX6377, MAX6378, MAX6379, MAX6380: Pin Configuration MAX6375, MAX6376, MAX6377, MAX6378, MAX6379, MAX6380: Pin Configuration Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .