CA1235 Adjustable Buck Converter Power Module

Adjustable Buck Converter Overview

The CA1235 Adjustable Buck Converter Power Module is a compact, high-efficiency voltage step-down converter that gives you precise control over output voltage from 1.25 V to 30 V. Designed for hobbyists, makers, and engineers, this variable output converter is ideal for powering LEDs, microcontrollers, sensors, small motors, and more.

Key Features of the CA1235 Converter

• Adjustable output range: 1.25 V to 30 V
• Maximum output current: up to 3 A (depends on cooling and input voltage)
• High efficiency: typically over 90% under normal load
• Near-silent operation using CA1235 converter technology
• Compact form factor: smaller than a business card for tight enclosures
• Durable power module circuit with quality PCB components and aluminum heat sink
• Safety features: over-current protection and thermal shutdown

Technical Specifications

• Input voltage: typical range 4.5 V to 40 V (check device limits before use)
• Output voltage: adjustable 1.25 V to 30 V
• Output current: up to 3 A (continuous rating depends on heat dissipation)
• Efficiency: >90% typical
• Core chip: CA1235 converter
• Cooling: aluminum heat sink mounted on PCB
• Protection: over-current and thermal protection

Benefits – Why Use This Voltage Step-Down Converter

• Energy efficient power conversion that reduces heat and extends battery life
• Precise voltage control for sensitive electronics and experiments
• Compact size saves space in enclosures and portable builds
• Robust build quality reduces failures due to vibration and heat

Applications and Use Cases

• Powering microcontrollers (Arduino, ESP32, STM32) with stable voltages
• Driving LED arrays, strips, and single high-power LEDs
• Supplying sensors, modules, and communication boards in prototypes
• Small motor and actuator power when controlled current is required
• Bench power supply projects and DIY test rigs

Installation and Tuning Tips

Basic Setup

• Connect input power to VIN and ground to GND. Ensure input voltage is within recommended range.
• Connect the load to VOUT and GND.
• Turn the adjustment potentiometer slowly while measuring the output with a multimeter until the desired voltage is reached.

Thermal and Current Management

• Keep the module ventilated. The aluminum heat sink improves thermal performance but allow airflow in confined enclosures.
• For sustained high-current loads near 3 A, add external heat sinking or forced air cooling.
• Observe the module’s over-current and thermal protection behavior during testing to understand trip points in your setup.

Protection and Reliability

The built-in over-current and thermal protection safeguards the module and attached devices. The power module circuit uses robust components mounted on a reinforced PCB to resist heat and vibration. The internal CA1235 converter chip provides smooth current adjustment to prevent voltage oscillation and audible noise.

Why Choose the CA1235 Buck Converter Module

• Reliable regulation using proven CA1235 technology
• High efficiency reduces power loss and heat generation
• Small size and straightforward tuning for fast prototyping
• Safety features deliver peace of mind in both hobby and professional projects

About This Power Module Circuit

Born from hands-on prototyping needs, this customizable power module is crafted for creators who demand reliable, repeatable voltage regulation. Slip it into your project and get consistent results on the first try.

Note: Pictures are for illustration purposes only.