Product description: Polol S10V4F5 - 5V 0.4A step-up/step-down 5V 0.4A step-up/step-down converter
Step-up/step-down converter with 5V output voltage. Maximum current 400 mA. Power supply 2.5 V - 18 V.
Main features of the S10V4F5 inverter
The output voltage can be higher, lower or equal to the supply voltage (between 2.5 V and 18 V).
Continuous output current is maximum 400 mA - depends on the input voltage (see further details).
Output voltage 5 V with 4 % accuracy.
Integrated temperature protection system.
- Small dimensions: 14.6 x 10.16 x 2.54 mm.
The large input voltage range and the stability of the 5 V output voltage with an accuracy of 4 % make the module very well suited as a stabiliser for battery-powered systems. For example, when 5 V is required in a single Li-pol (3.7 V) cell system during the entire battery cycle.
In a typical application, the system can provide current up to 400 mA (see further details in the description). The controller is equipped with temperature protection, but has no protection against short circuit and reverse power connection.
The module has four outputs:
- VIN - input voltage from 2.5 V - 18 V. If the lower module does not switch on, the higher one can damage the system.
- GND - ground potential.
- VOUT- 5 V output voltage.
- SHDN - switching off the system - giving a low state, makes the system go into a low power consumption state. The output is pulled to the VIN via a 10 kΩ resistor, which makes the system switched on by default.
Connectors are properly signed on the board. Outputs Raster is 2.54 mm (popular goldpin connectors). The module can be plugged into a contact board, connected with wires or soldered into a dedicated PCB.
Efficiency is defined as the ratio of input power to output power (Pout/Pin). This parameter is particularly important for battery operation when it is important to keep the system running as long as possible on a single charge. The efficiency of the inverter depends on the flowing current and the input voltage (graph below). On average, it is at the level of 70-80%, which allows to use practically maximum energy from the battery.
The maximum current that the system can deliverdepends on: input voltage and operating temperature. The dependence of the maximum current consumption on the input voltage is shown in the figure below. If the operating temperature reaches too high a value, the module will automatically disconnect the power supply.
Voltage jumps (pins)
In electronic circuits the starting current may cause the occurrence of so-called pins, i.e. sudden voltage surges to a value above a set level. If the amplitude of the pins exceeds the permissible value of the regulator, it can be destroyed. Therefore, if the circuit will be supplied with voltage above 11V or the load will have high inductance, we recommend to solder a capacitor of 33uF/25V or higher as close to the circuit as possible between VIN and GND.
S10V4F5 inverter specification
- Input voltage: 2.5 V to 18 V
- Output voltage: 5 V
- Frequency of operation: 1.5 MHz
- Maximum output current: 400 mA
- System current consumption (quiescent current): 2 mA
- Small dimensions: 14.6 x 10.16 x 2.54 mm
- Weight (without connectors): 0.6 g