LTC2959

RECOMMENDED FOR NEW DESIGNS

LTC2959

Ultra-Low Power Battery Gas Gauge

RECOMMENDED FOR NEW DESIGNS

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Part Models 2

1ku List Price Starting From $3.80

Features

Operating Supply Current <1.0μA
Supply Voltage from 1.8V to 60V
0V to 60V Sense Voltage for Low-Side or High-Side Sensing
Fast 16-bit ADC Measures Voltage, Current and Temperature
1% Voltage, Current and Charge Accuracy
No Crystal or other Time Reference Required
Programmable Deadband Prevents Charge Drift

Includes Battery Voltage Watchdog
Includes Precision Temperature Sensor
Programmable Alerts and Min/Max Tracking Registers
Auxiliary ADC Input for Sensor Readout
I²C/SMBus Interface
Available in Small 10-Lead 3mm × 2mm DFN Package

Additional Details

The LTC2959 is an ultra-low power battery gas gauge that accurately measures charge, voltage, current and temperature. Its wide input voltage range and its low operating current make the LTC2959 suitable for many applications, including duty-cycled systems that operate over long lifetime.

A precision coulomb counter integrates current through an external sense resistor connected at any point in the battery current path. A 16-bit ADC can be configured to measure voltage, current, temperature and/or an auxiliary input in single-shot, duty-cycled (1S/52s) or continuous mode (2.5kS/s). The measurements are stored in internal registers accessible via the onboard I²C/SMBus interface.

The LTC2959 features programmable high and low thresholds and min/max tracking registers. If a threshold is exceeded, the device sets a flag in the internal status register and communicates an alert using the SMBus alert protocol when configured as such.

APPLICATIONS

Remote Sensors
Energy Harvesting Systems
Low-Power Handheld Products
Power Tools