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Step-Up/Step-Down Voltage Regulator S9V11MA - 2,5-9V 1,5A - Pololu 2869
Miniature boost converter module supplied with voltage from 3 V to 16 V. Output voltage adjustable from 2,5 V to 9 V. Maximum current 1,5 A. Dimensions: 15 x 13 x 6 mm.
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Specification
- Input voltage: from 3 V to 16 V
- Maximum output current: 1.5 A
- Resting current: 1 mA
- Output voltage: adjustable from 2.5 V to 9 V
- Short circuit and over temperature protection
- Dimensions: 15 x 13 x 6 mm
- Weight: 0.8 g (without connectors)
Product description: S9V11MA - step-up/step-down converter - regulated 2,5 - 9 V 1,5 A - Pololu 2869
The converteris used to supply circuits with voltage from 2.5V to 9V. The circuit has a wide range of input voltages, which makes it ideal for battery-powered designs. Application of S9V11MA ensuresstability of power supplyduring the entire cycle of battery discharge. In order to increase reliability, the module is equipped with short-circuit protection and automatic power cut-off when the permissible operating temperature is exceeded.
We also offer a set to build asmartphone charger with on-line manual. |
In set you will find goldpins for individual soldering.
Botland is an official distributor of Pololu electronics and robotics parts. Countless robots hold at least one component of this brand in their build. Our team guarantees that all Pololu products presented here are original.
How to use
The module is very simple to use, it has three basic leads:
How to use
- VIN: - input voltage from 3 V to 16 V. With lower voltage module will not turn on, higher can damage the chip.
- GND: - Ground of the system.
- VOUT: - output voltage from 2.5 V to 9 V.
Additional pins:
Additional pins
- EN: - Enable input. Enables the circuit when the voltage is over 0,8 V. It is connected through voltage divider with VIN, so it cuts off the power at VIN below the set value.
- PG: - voltage quality indicator. An open-drain type output, it sets low when the power drops below 90% of the nominal voltage, also when the EN pin is in the low state. Returns to the high state when the mod 95 % is exceeded. Has high impedance, requires a pull-up resistor.
- SEL: - not used
- Potentiometer for changing the output voltage
The acceptable input voltage range is from 3 V to 16 V. The regulator will not turn on at a lower value. A higher voltage may damage the circuit.
The connectors are properly signed on the board.The pinout is 2.54 mm (goldpin connectors). The module can be plugged into thecontactboard, connected bywiresor soldered into a dedicated PCB.
Output voltage setting
Output voltage is regulated by a built-in potentiometer. Turning clockwise increases the output voltage, which should be measured with a meter.
The voltage can be set below 2.5 V and above 9 V, but the device may then operate unstably. We recommend using the range specified by the manufacturer. Voltage may be 3% higher with little or no load. It may also drop depending on the current draw, especially when the input voltage is lower than the output voltage. However, it should be within 5% of the error.
Maximum output current as a function of input voltage.
Output Current
The maximum current that can flow through the circuit depends on the value of the input voltage. This relationship is shown in the graph below:
Efficiency
This parameter is especially important with battery power supply, when it is important for the system to work as long as possible on a single charge. The efficiency of the converter depends on the current flowing and the input voltage (graph below). On average, it is between 85% and 95%, which allows to use practically the maximum energy from the battery.
The efficiency of the converter depending on the current consumed.
Voltage jumps (pins)
In electronic circuits, the starting current may cause so-called spikes, sudden voltage jumps to a value above a set level. If the amplitude of the spikes exceeds the regulator's allowable value, the regulator can be destroyed. Therefore, if the circuit will be supplied with voltage above 9 V or the load will have high inductance, we recommend soldering a capacitor of 33 µF / 20 V or higher as close as possible to the circuit between VIN and GND.
EN- Enable input. Enables the circuit when the voltage is over 0,8 V. It is connected through voltage divider withVIN, so it cuts off the power at VIN below the set value.
Useful links
| Name | Value |
|---|---|
| Length | 15 mm |
| Width | 12 mm |
| Height | 3 mm |
| Voltage to | 2.0 V |
| Voltage from | 16.0 V |
| Voltage output from | 2.5 V |
| Output voltage to | 9.5 V |
| Current | 1.5 A |
| Stabilizer - Type2 | switching |
| Stabilizer - Type | step-up/down |
| Width | 7.5 cm |
| Height | 0.5 cm |
| Depth | 7.5 cm |
| Weight | 0.003 kg |
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
Complaints
If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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Instructions and documents
GPSR data
Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
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