LTC4150 Odometer Sensor Board

LTC4150 Odometer Sensor Board

Odometers are extremely useful for cars, they tell you how far you have gone, wouldn't it be nice if you were able to have a device that does the same for the electrical current? The LTC4150 Coulomb Counter Breakout is here to be your odometer for current. This breakout is capable of constantly monitoring the current your sensor is using, is able to add it up, and will give you a pulse each time a given amount of amp-hours have been used. When used effectively and if you start with a full battery, you’ll always know exactly how much of it is left!

At one end of the Coulomb Counter, Breakout headers labelled IN and OUT. Connect your battery or power supply to the IN header or JST battery connector (they’re identical), and connect the OUT header to your project. At the other end of the Coulomb Counter, you’ll find a header with six pins. These are the pins you’ll need to connect to your microcontroller and include VIO (Voltage Input), INT (Interrupt), POL (Polarity), GND (Ground), CLR (Clear), and SHDN (Shutdown). Simply install this breakout out between your power source and your circuit, that way all the current your circuit uses needs to pass through the Coulomb Counter to be measured.

Specifications:

• Operating Voltage: 2.7V - 8.5V DC
• Operating Current: 1A
• Indicates Charge Quantity and Polarity
• ±50mV Sense Voltage Range
• 32.55Hz/V Charge Count Frequency
• 1.5μA Shutdown Current
• Conversion efficiency: Up to 92% (output voltage higher, the higher the efficiency)
  
• Switching Frequency: 150KHz
  
• Rectifier: Non-Synchronous Rectification
  
• Module Properties: Non-isolated step-down module (buck)
  
• Short circuit protection: current limiting, since the recovery
  
• Operating temperature: Industrial grade (-40 to +85 ) (output power 10W or less)
  
• Full load temperature rise: 40
  
• Load regulation: ± 0.5%
  
• Voltage regulation: ± 2.5%
  
• Dynamic response speed: 5% 200uS