Step-Up Voltage Regulator U3V40F9 - 9V 3,5A - Pololu 4015

Pololu brand step-upconverter with an output voltage of 9 V and a capacity of 3.5 A. Supply voltage ranges from 1.3 V to 9 V (starting voltage is 2.7 V). Typical inverter efficiency ranges from 90% to 95%, depending on input voltage and load. The module has temperature protection; it will shut down when the temperature threshold is exceeded.

The module has four leads in the form of six holes for soldering connectors with a raster of 2.54 mm.

• EN - pin which switches off the circuit when the voltage is below 0.4 V, the circuit is switched on by default: 30 kΩ resistor pulled up from EN to VIN.
• VIN - input voltage from 2.7 V to 9 V (after starting up the chip, the input voltage may be at least 1.3 V).
• GND - system ground (common for VIN and VOUT).
• VOUT - output voltage of 9 V.

While connecting the power supply to the module, dangerous, short eclectic impulses with large amplitude (so-called pins) may appear, which can permanently damage the system. Pololu tests show that for input voltages above 11 V pins can have amplitude large enough to damage the module. To protect against this undesirable phenomenon it is recommended to solder a capacitor of at least 33 uF as close as possible to the pins supplying the converter.

Efficiency is defined as the ratio of output power to input power (power out)/(power in). This is a very important parameter when working with portable power sources. (Batteries and rechargeable batteries), where the working time on a single charge cycle matters. The efficiency of this circuit is between 90% and 95%. The output current depends on the input voltage and the system load.

• Input voltage: from 1.3 V to 9 V (minimum voltage to run the circuit is 2.7 V)
• Output voltage: 9 V (with 4% accuracy)
• Typical efficiency: 90% to 95%, depending on input voltage and load
• Switching frequency: ~600 Hz at high load
• Energy-saving mode
• Typical no-load idle current less than 2 mA
• 9.5 A switch allows:
  • momentary input current up to 9.5 A
  • up to 4 A input current for a few seconds
  • input current up to 3.5 A for a longer time
• Integrated protections:
  • shutdown due to excessive temperature
  • soft-start function limits the inrush current and gradually increases the output voltage
  • Output overvoltage protection (typically 16.5 V)
  • input current limitation cycle by cycle to 9.5 A
• Dimensions: 15.2 x 15.2 x 5.6 mm
• Weight: 1.5 g

• Manufacturer's website: Pololu #4015
• Dimensions
• 3D model