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.
These devices are available in several versions: with single- or dual-voltage monitors, and with fixed or adjustable hysteresis. The MAX6775/MAX6776 offer a single battery monitor and factory-set hysteresis of 0.5%, 5%, or 10%. The MAX6779/MAX6780/MAX6781 have two battery monitors in a single package and factory-set hysteresis of 0.5%, 5%, or 10%. The MAX6777/MAX6778 offer a single battery monitor with external inputs for the rising and falling thresholds, allowing external hysteresis control.
For convenient interface with system power circuitry or microprocessors, both open-drain and push-pull outputs are available. The single-channel devices are available with open-drain or push-pull outputs. The dual-channel devices are available with both outputs open-drain, both outputs push-pull, or one of each
(see the Selector Guide). This family of devices is offered in small 5-pin SC70 and ultra-small 6-pin µDFN packages, and is fully specified over the -40°C to +85°C extended temperature range.
Key Features
Applications/Uses
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
Battery-Powered Systems (Single-Cell Li+ or Multicell NiMH, NiCd, Alkaline)
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
Download
E-Mail
