LTC3337

RECOMMENDED FOR NEW DESIGNS

Primary Battery SOH Monitor with Precision Coulomb Counter

Data Sheet (Rev. A) Product Selection Table
Part Models
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Part Details

  • 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)
  • Primary Battery Current (BAT_IN) or Load Current (BAT_OUT) is Counted
  • Integrated ±10mA Supercapacitor Balancer
  • Programmable Coulomb Counter Prescaler for Wide Range of Battery Sizes
  • Programmable Discharge Alarm Threshold with Interrupt Output
  • I2C Interface
  • Tiny 12-Lead 2mm × 2mm LFCSP and 16-Ball 1.64mm × 1.64mm WLCSP Packages
LTC3337
Primary Battery SOH Monitor with Precision Coulomb Counter
LTC3337 Application Circuit LTC3337 Pin Configuration LTC3337 Pin Configuration LTC3337 Performance Graph
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Documentation

Data Sheet 1

User Guide 1

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Software Resources

Device Drivers 1

Tools & Simulations

LTpowerPlay®

LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.

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Evaluation Kits

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DC2973A

LTC3337 | Primary Battery SOH Monitor with Precision Coulomb Counter

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Product Details

Demonstration circuit 2973A shows the LTC3337 Primary Battery State of Health (SOH) monitor with precision coulomb counter operating with a configurable peak current limit. The LTC3337 supports input voltages from 1.8V to 5.5V and a peak current up to 100mA with a quiescent current of 100nA. Coulomb count, battery voltage, and Battery Series Resistance (BSR) are measurable and can be used to quantify the charge state and health of a battery.

The DC2973A demonstrates a simple layout for the highest-power configuration of the LTC3337. The circuit can be reduced for lower IPEAK levels. The demo board can be connected directly to a PC using a micro USB cable in order to run a GUI and configure simple a Battery State of Charge (SOC) monitor. Source code for the GUI is available and can be used as a starting point for LTC3337 firmware development.
DC2973A
LTC3337 | Primary Battery SOH Monitor with Precision Coulomb Counter
DC2973A Evaluation Board DC2973A Evaluation Board - Top View DC2973A Evaluation Board - Bottom View

Latest Discussions

1 Years Ago
RE: DC2973A / LTC3337 Does Not Power on Loads Greater than 20mA
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