General Description

The MAX6775–MAX6781 low-power, 1-accurate battery monitors are available in the ultra-small µDFN package (1.0mm x 1.5mm) and SC70 packages. These low-power devices are ideal for monitoring single lithium-ion (Li+) cells, or multicell alkaline/NiCd/NiMH power sources. These devices offer single (MAX6775/ MAX6776/MAX6777/MAX6778) or dual (MAX6779/MAX6780/MAX6781) low-battery outputs and feature fixed or resistor-adjustable hysteresis. Hysteresis eliminates the output chatter sometimes associated with battery voltage monitors, usually due to input-voltage noise or battery terminal voltage recovery after load removal.

Features

♦ 1.0-Accurate Threshold Specified Over Temperature

♦ Single/Dual, Low-Battery Output Options

♦ Low 3µA Battery Current

♦ Open-Drain or Push-Pull Low-Battery Outputs

♦ Fixed or Adjustable Hysteresis

♦ Low-Input Leakage Current Allows Use of Large Resistors

♦ Guaranteed Valid Low-Battery-Output Logic State Down to VBATT = 1V

♦ Immune to Short Battery Transients

♦ Fully Specified from -40°C to +85°C

♦ Small 5-Pin SC70 or Ultra-Small 6-Pin µDFN (1mm x 1.5mm) Package