This LTC3401-based reference design is a boost converter, transforming a lower input voltage into a stable 3V3 output. Perfect for applications that need a regulated 3V3 power source. #referenceDesign #project #boostConverter #voltageRegulator #3V3 #LTC3401 #referenceDesign #powermanagement #analogdevices #template #reference-design

- ESP32 DevKitC V4 (microcontroller) - 2x BME280 sensors (temperature, humidity, pressure) - 8ch relay board with 12VDC relays (NO/NC SPDT) - 12VDC power supply - USB connectivity - Various components (resistors, caps, opto couplers, op-amps, motor drivers, multiplexers) - 2x SPDT relay boards (for fan fail-safe) - 4x 2ch bidirectional level controllers (3.3V to 5V) - ESP32 GPIO 21 (SCL) to BME280's SCL - ESP32 GPIO 22 (SDA) to BME280's SDA - ESP32 GPIO 5 (digital output) to 8ch relay board input - ESP32 GPIO 25 (PWM output) -> Fan PWM (0-255 value) - ESP32 GPIO 26 (PWM output) -> Light PWM (0-255 value) - ESP32 GPIO 34 (analog input) -> Tachometer input (0-4095 value, 12-bit ADC) - Add a 5V voltage regulator (e.g., 78L05) to power the ESP32 and other 5V components - Add a 3.3V voltage regulator (e.g., 78L03) to power the BME280 sensors and other 3.3V components - Include decoupling capacitors (e.g., 10uF and 100nF) to filter the power supply lines - Ensure proper grounding and shielding to minimize noise and interference -- Power supply: - VCC=12VD Available, to be used for LM358P - 5V voltage regulator (78L05) - VCC=5V, GND=0V - 3.3V voltage regulator (78L03) - VCC=3.3V, GND=0V - 3.3V voltage regulator (78L03) - VCC=3.3V, GND=0V - Fan PWM boost: - Input (3.3V PWM): 0-3.3V, frequency=20kHz - Output (5V PWM): 0-5V, frequency=20kHz - LM358P op-amp (unity gain buffer) - VCC=5V, GND=0V - R1=1kΩ, R2=1kΩ, R3=1kΩ, R4=1kΩ - C1=10uF (50V), D1=1N4007 - 0-10V signal conditioning: - Input (3.3V PWM): 0-3.3V, frequency=13kHz - Output (0-10V): 0-10V, frequency=13kHz - LM358P op-amp (non-inverting amplifier) - VCC=5V, GND=0V - R5=2kΩ, R6=1kΩ, R7=2kΩ, R8=1kΩ, R9=1kΩ, R10=2kΩ - C2=10uF (50V), R11=10kΩ (1%) ------------------------------------ Fan PWM Boost (3.3V to 5V): 1. ESP32 GPIO 25 (PWM output) -> R1 (1kΩ) -> VCC (3.3V) 2. ESP32 GPIO 25 (PWM output) -> R2 (1kΩ) -> Vin (LM358P) 3. LM358P (Voltage Follower): - VCC (5

The BSS138DW, manufactured by Diodes Incorporated, is a dual N-channel enhancement mode field-effect transistor (MOSFET) designed for high efficiency power management applications. This component features a low on-state resistance (RDS(on)) of 3.5 ohms at VGS = 10V and can handle a maximum drain current (ID) of 200mA at an ambient temperature of 25°C. With a drain-source voltage (V(BR)DSS) of 50V, the BSS138DW is ideal for load switching applications. The MOSFET offers superior switching performance with low gate threshold voltage, low input capacitance, and fast switching speed. It is fully compliant with RoHS standards and is available in a SOT-363 package. The component is also available in an automotive-compliant version under the part number BSS138DWQ, meeting AEC-Q101 standards for high reliability.

Naze 32 Revision 6 Flight Controller Schematic At the heart of the Naze32 is a 32bit ST micro work horse of a processor, with untapped memory and cpu power and a host of equally impressive sensors. The Naze is also matched up with some of the nicest GUI programs and features to get the most out of your configuration. Naze32 rev6 Features: USB on right side PPM/PWM input as through-hole 3.3V, I2C on standard-size headers Fully pinout compatible with rev5 accessories (OSDoge etc) SBUS Inverter Spectrum satellite MPU6500 Sonar pads w/resistors added for direct connection to 5V sonar All extra pads (FT, GP, A5) on top, only sonar on bottom BMP280 barometer 16mbit flash Guide: https://www.dronetrest.com/t/naze-32-revision-6-flight-controller-guide/1605

This LTC3401-based reference design is a boost converter, transforming a lower input voltage into a stable 3V3 output. Perfect for applications that need a regulated 3V3 power source. #referenceDesign #project #boostConverter #voltageRegulator #3V3 #LTC3401 #referenceDesign #powermanagement #analogdevices #template #reference-design

Your power supply problems just got SUPER SOLVED! This 3.3V Buck Converter Breakout board is great for supplying power to low voltage circuits from a single Li-Ion cell battery or USB power. This chip provides up to 600-mA load current across the entire input voltage range of 3.5 to 5.5V.

LM3671 3.3V Buck Converter Breakout - 3.3V Output 600mA Max. Your power supply problems just got SUPER SOLVED! This 3.3V Buck Converter Breakout board is great for supplying power to low voltage circuits from a single Li-Ion cell battery or USB power. This chip provides up to 600-mA load current across the entire input voltage range of 3.5 to 5.5V. Great for your portable project, we made this "pin compatible" with the LM1117-3.3V TO-220 chip so you can swap it in for better performance (90-95% efficiency!) There's also an ENable pin, tie it low to shut down the output completely.

The OPA835 and OPA2835 from Texas Instruments are single and dual ultra-low-power, rail-to-rail output, negative-rail input, voltage-feedback (VFB) operational amplifiers designed for optimal performance in battery-powered and portable systems. Operating over a power supply range of 2.5 V to 5.5 V, these op amps consume only 250 µA per channel and offer a unity gain bandwidth of 56 MHz, making them industry leaders in performance-to-power ratio for rail-to-rail amplifiers. These components feature a quiescent current of 250 µA/ch (typical), with a power-down mode reducing current to 0.5 µA (typical), a slew rate of 160 V/µs, a rise time of 10 ns for a 2 V step, and a settling time of 55 ns to 0.1% for a 2 V step. Additional features include a signal-to-noise ratio (SNR) of 0.00015% (-116.4 dBc) at 1 kHz (1 VRMS), total harmonic distortion (THD) of 0.00003% (-130 dBc) at 1 kHz (1 VRMS), and a wide input voltage noise of 9.3 nV/√Hz at 100 kHz. The OPA835 and OPA2835 provide rail-to-rail output swing and input voltage range from -0.2 V to 3.9 V (5-V supply), supporting high-density, low-power signal conditioning applications with an operating temperature range from -40°C to +125°C. These components come in various package options, ensuring flexible integration into diverse electronic designs.

The Texas Instruments OPA835 and OPA2835 are ultra-low-power, rail-to-rail output, negative-rail input, voltage-feedback (VFB) operational amplifiers designed for operation across a wide power supply range of 2.5 V to 5.5 V with a single supply or +1.25 V to +2.75 V with a dual supply. These components are notable for their industry-leading performance-to-power ratio, which features a quiescent current of just 250 µA per channel and a unity gain bandwidth of 56 MHz. They are ideal for battery-powered, portable applications where power efficiency is critical, without compromising on high-frequency performance. The OPAx835 series brings the added benefit of a power-savings mode, reducing current consumption to less than 1.5 µA, making them an attractive choice for high-frequency amplifiers in battery-powered systems. Their compact package options, including SOT-23, SOIC, VSSOP, UQFN, and QFN, cater to space-constrained applications, providing a versatile solution for low-power signal conditioning, audio ADC input buffers, low-power SAR and ΔΣ ADC drivers, portable systems, low-power systems, high-density systems, and ultrasonic flow meters.

Naze 32 Revision 6 Flight Controller Schematic At the heart of the Naze32 is a 32bit ST micro work horse of a processor, with untapped memory and cpu power and a host of equally impressive sensors. The Naze is also matched up with some of the nicest GUI programs and features to get the most out of your configuration. Naze32 rev6 Features: USB on right side PPM/PWM input as through-hole 3.3V, I2C on standard-size headers Fully pinout compatible with rev5 accessories (OSDoge etc) SBUS Inverter Spectrum satellite MPU6500 Sonar pads w/resistors added for direct connection to 5V sonar All extra pads (FT, GP, A5) on top, only sonar on bottom BMP280 barometer 16mbit flash Guide: https://www.dronetrest.com/t/naze-32-revision-6-flight-controller-guide/1605

This circuit can take an analog input, control a DC gearmotor, sense its direction and cumulative number of revolutions, and turn on and off three LEDs, in whatever way it is programmed. It can be repeatedly reprogrammed through a connector on the PCB. Powered by six AA batteries, it economizes on power by disconnecting some components when they are not in use.

The BSS138, manufactured by Diodes Incorporated, is an N-Channel Enhancement Mode MOSFET designed for high-efficiency power management applications. This component features a low on-resistance (RDS(ON)) of 3.5Ω at VGS = 10V and a drain-source voltage (BVDSS) of 50V, making it ideal for system/load switching applications. Key benefits include a low gate threshold voltage, low input capacitance, and fast switching speed, ensuring superior performance in various electronic circuits. The BSS138 is available in a SOT23 package and is fully RoHS compliant, halogen and antimony-free, and classified as a "Green" device, suitable for environmentally conscious designs. Additionally, an automotive-compliant version (BSS138Q) is available for applications requiring stringent change control and high reliability, adhering to AEC-Q100/101/200 standards.

24VDC Input 5kV Output MCU controlled 200kHz PWM Mosfet based inverter 6 stage multiplier Todo: Pick real inductor in load network Flyback Transformer with Ferrite core Selection

A simple voltage divider to showcase how to make parts. A voltage divider is a simple circuit which turns a large voltage into a smaller one. Using just two series resistors and an input voltage, we can create an output voltage that is a fraction of the input. Voltage dividers are one of the most fundamental circuits in electronics.

A simple voltage divider to showcase how to make parts. A voltage divider is a simple circuit which turns a large voltage into a smaller one. Using just two series resistors and an input voltage, we can create an output voltage that is a fraction of the input. Voltage dividers are one of the most fundamental circuits in electronics.

Raspberry Pi 5 HAT with 12V DC input protection, 12V-to-5V buck regulation, 40-pin GPIO header, MPU6050 I2C header, NEO-8M UART header, and GPIO status LED.

Low-voltage DC distribution board for an Australian faceplate: 24V input with fused 24V pass-through and isolated 12V/5A conversion feeding three individually protected 12V outputs in a 75 × 75 mm envelope.

Power-section schematic for a 12V DC input generating +4V for a 4G module, +5V, and +3V3 rails with input TVS protection and regulator thermal notes.

Industrial 24 VDC input protection, distribution, regulated 12 V and 5 V outputs, diagnostics, test points, and selectable 0V-to-PE bonding. Schematic and BOM only; no PCB layout started.

Meshtastic ESP32-S3 node with 5 V input, 3.3V low-noise regulation, and I2C expansion.

This is a dual voltage input circuit for a NRF battery application.