Product description: U3V40F9 - 9V 3,5A step-up converter - 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.
9 V / 3.5 A step-up converter outputs.Leads of the step-up converter module
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.
Hazardous voltage pulses
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.
System efficiency
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.
Current efficiency of the U3V40F9 step-up converter.
U3V40F9 9 V / 3.5 A step-up converter. Goldpin connectors included.U3V40F9 step-up inverter specifications
- 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
Useful links |
