Boost 7 Click Board™

Product Code: MIKROE-5575

How Does The Boost 7 Click Board™ Work? The Boost 7 Click Board™ is based on the LT1945, a dual step-up and inverted DC/DC converter from Rohm Semiconductor that boosts an input voltage to a higher level required by an output load. The BD8316GWL switching regulator feature integrated N-channel FETs and power P-channel MOSFETs alongside a Soft Start feature. Each converter inside the LT1945 is designed with up to 200mA current limit generating well-regulated positive and negative outputs of ±3.3V or ±5V, making the BD8316GWL ideal for various portable applications. As mentioned, the BD8316GWL can configure the positive and negative output voltage in the ±3.3V or ±5V range. The desired output voltage can be selected by positioning SMD jumpers labelled as V- SEL and V+ SEL to an appropriate position. It is also possible to control the activity of the output channels via two mikroBUS™ pins, SB1 and SB2 pins. These pins are routed to a default position of the AN and PWM pins of the mikroBUS™ socket.

By setting these pins to a high logic state, we put the converter outputs to an active state, and regulated voltages are available at the output terminals. In the same way, setting these pins to a low logic level disables the channels. The Boost 7 Click Board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. Additionally, there is a possibility for the BD8316GWL power supply selection via jumper labelled as VIN SEL to supply the BD8316GWL from an external power supply terminal in the range from 2.5V to 5.5V or with a selected voltage from mikroBUS™ power rails. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type Boost Applications Can be used to step up an input voltage to some higher level On-board modules BD8316GWL - dual DC/DC converter from Rohm Semiconductor Key Features Regulated negative and positive outputs, current-limited, high efficiency, low power consumption, selectable converter power supply, digitally-controlled output channels, and more Interface GPIO Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V,External PINOUT DIAGRAM This table shows how the pinout of the Boost 7 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes Negative Channel Control SB1 1 AN PWM 16 SB2 Positive Channel Control NC 2 RST INT 15 NC NC 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator JP1 V-SEL Left Negative Output Voltage Selection -3.3V/-5V: Left position -3.3V, Right position -5V JP2 V+SEL Left Positive Output Voltage Selection +3.3V/+5V: Left position +3.3V, Right position +5V JP3 VCC SEL Left Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V JP4 VIN SEL Right BD8316GWL Power Supply Selection VEXT/VCC: Left position VEXT, Right position VCC BOOST 7 CLICK ELECTRICAL SPECIFICATIONS Description