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Analog Devices Announces Nanopower Primary Cell State-of-Health Monitor with Precision Coulomb Counter

Wilmington, Mass. – Analog Devices, Inc. introduced today the LTC3337, a nanopower primary (non-rechargeable) cell State-of-Health (SoH) monitor with precision coulomb counter, designed to be placed in series with a primary battery with minimal associated series voltage drop. The patented infinite dynamic range coulomb counter tallies all accumulated battery discharge and stores it in an internal register accessible via an I2C interface. Quiescent current consumption is only 100nA, increasing battery run time.

The LTC3337 integrates additional SoH variable monitoring which measures and reports via I2C: battery voltage, battery impedance, and temperature. To accommodate a wide range of primary battery inputs, the peak input current limit is pin selectable from 5mA to 100mA. This enables the IC to present the battery with a load profile which allows it to deliver its maximum capacity, independent of the actual load. This is “battery friendly” and prolongs the lifetime of the cell. The LTC3337 is ideal for primary cell applications that require only occasional power such as applications in remote locations, electronic door locks, or glass break detectors. The device may also be used in rechargeable battery cell applications.

LTC3337 Key Features:

  • Battery Input Voltage Range: 1.8V to 5.5V
  • 100nA Quiescent Current
  • 8 Primary Battery Peak Input Current Limits:
    • 5mA/10mA/15mA/20mA/25mA/50mA/75mA/100mA
  • SoH Monitor for Primary Battery
    • Integrated Coulomb Counter (Q) Additional Monitors for Battery Voltage (V), Battery Impedance (Z), and Temperature (T) 

Pricing and Availability

Product Full

Production

 

Price Each Per 1,000 Packaging
LTC3337 NOW $1.67 12-Lead 2mm × 2mm LFCSP

About Analog Devices

Analog Devices, Inc. operates at the center of the modern digital economy, converting real-world phenomena into actionable insight with its comprehensive suite of analog and mixed signal, power management, radio frequency (RF), and digital and sensor technologies. ADI serves 125,000 customers worldwide with more than 75,000 products in the industrial, communications, automotive, and consumer markets. ADI is headquartered in Wilmington, MA. Visit http://www.analog.com.

EngineerZone is a trademark of Analog Devices, Inc.

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