LTC3337ERC#TRPBF
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Analog Devices Inc. LTC3337ERC#TRPBF

Manufacturer No:
LTC3337ERC#TRPBF
Manufacturer:
Analog Devices Inc.
Package:
Tape & Reel (TR)
Description:
PRIMARY BAT SOH MONITOR & PREC C
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The LTC3337ERC#TRPBF, produced by Analog Devices Inc., is a primary battery state of health (SOH) monitor equipped with a built-in precision coulomb counter. This device is designed to be placed in series with a primary battery, ensuring minimal associated series voltage drop. It provides accurate, real-time readings of battery cell discharge, voltage, impedance, and temperature. The LTC3337 integrates an infinite dynamic range coulomb counter that tallies all accumulated battery discharge and stores it in an internal register accessible via an I2C interface. A programmable discharge alarm threshold based on the state of charge (SOC) generates an interrupt at the IRQ pin when reached.

Key Specifications

ParameterMinTypMaxUnits
Input Voltage Range (BAT_IN)1.85.5V
AVCC Voltage Range1.85.5V
Quiescent Current100nA
Peak Input Current Limits5100mA
Clock Operating Frequency (fSCL)400kHz
Operating Junction Temperature Range-40125°C

Key Features

  • Primary battery state of health (SOH) monitor with a built-in precision coulomb counter
  • Minimal associated series voltage drop
  • Monitors battery voltage, impedance, and temperature via I2C interface
  • Programmable discharge alarm threshold with interrupt output
  • Peak input current limit selectable from 5mA to 100mA
  • Integrated ±10mA supercapacitor balancer
  • Supports a wide range of primary battery inputs
  • Available in 12-lead LFCSP and 16-ball WLCSP packages
  • Operating junction temperature range: -40°C to +125°C

Applications

The LTC3337 is suitable for various applications requiring precise monitoring of primary battery health, including:

  • Battery-powered devices where accurate state of charge and state of health monitoring is critical
  • Devices utilizing supercapacitors, where the integrated balancer is beneficial
  • Industrial and consumer electronics that require reliable battery management
  • Medical devices and other applications where battery reliability is paramount

Q & A

  1. What is the primary function of the LTC3337?
    The LTC3337 is a primary battery state of health (SOH) monitor with a built-in precision coulomb counter.
  2. What is the input voltage range of the LTC3337?
    The input voltage range is from 1.8V to 5.5V.
  3. What is the quiescent current of the LTC3337?
    The quiescent current is 100nA.
  4. How is the peak input current limit of the LTC3337 controlled?
    The peak input current limit is pin selectable from 5mA to 100mA.
  5. What additional parameters does the LTC3337 monitor besides coulomb count?
    Battery voltage, impedance, and temperature.
  6. What interface does the LTC3337 use for data communication?
    I2C interface.
  7. What is the operating junction temperature range of the LTC3337?
    -40°C to +125°C.
  8. What packages are available for the LTC3337?
    12-lead LFCSP and 16-ball WLCSP packages.
  9. Does the LTC3337 support supercapacitor balancing?
    Yes, it integrates a ±10mA supercapacitor balancer.
  10. How is the discharge alarm threshold set?
    The discharge alarm threshold is programmable based on the state of charge (SOC).

Product Attributes

Function:Battery Monitor
Battery Chemistry:Supercapacitor
Number of Cells:1
Fault Protection:Over Current
Interface:I²C
Operating Temperature:-40°C ~ 125°C (TJ)
Mounting Type:Surface Mount
Package / Case:12-WFQFN Exposed Pad, CSP
Supplier Device Package:12-LFCSP (2x2)
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Similar Products

Part Number LTC3337ERC#TRPBF LTC3337ERC#TRMPBF
Manufacturer Analog Devices Inc. Analog Devices Inc.
Product Status Active Active
Function Battery Monitor Battery Monitor
Battery Chemistry Supercapacitor Supercapacitor
Number of Cells 1 1
Fault Protection Over Current Over Current
Interface I²C I²C
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Mounting Type Surface Mount Surface Mount
Package / Case 12-WFQFN Exposed Pad, CSP 12-WFQFN Exposed Pad, CSP
Supplier Device Package 12-LFCSP (2x2) 12-LFCSP (2x2)

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