Pololu D42V55F12 Step-Down Voltage Regulator – 12V Output, 4.5A Continuous

Description

Description

• Pololu D42V55F12 12V 4.5A Step-Down Voltage Regulator
• Converts voltages up to 60V to stable 12V output
• Supports 3A to 8A continuous output current
• Offers high efficiency of 85% to 95%
• Includes reverse-voltage and over-current protection
• Features thermal shutdown and soft-start capability

The Pololu D42V55F12 12V 4.5A Step-Down Voltage Regulator is a high-efficiency synchronous buck regulator designed to convert higher input voltages, up to 60 V, into a stable 12 V output. This regulator is part of the D42V55Fx family, known for their efficiency in reducing voltage, particularly when there is a significant difference between input and output voltages. It is capable of supporting continuous output currents ranging from 3 A to 8 A, depending on the specific input and output conditions.

This device incorporates several protective features to ensure reliable operation. It includes input reverse voltage protection and over-current protection to safeguard against electrical faults. Additionally, a thermal shutdown feature is integrated to prevent damage from overheating, while a soft-start feature limits inrush current and gradually increases the output voltage during startup.

The regulator is designed with a typical efficiency range of 85% to 95%, making it suitable for applications requiring energy conservation. It operates at a switching frequency of approximately 400 kHz under heavy loads and has a low no-load quiescent current, enhancing its efficiency in various conditions. The regulator also offers an optional enable input for low-power states and a power-good output for sequencing, fault detection, and voltage monitoring.

Note: Ensure proper handling and installation to avoid electrical hazards.

View moreWhat’s Included

Six connections arranged on a 0.1″ grid for compatibility with solderless breadboards, 0.1″ male headers, and 0.1″ female headers.

Dimensions

• 25.4 x 25.4 x 9 mm (1 x 0.355″)

Specifications

• Input voltage: 12 V to 60 V (minimum input subject to dropout voltage considerations)
• Output voltage: 12 V with 3% accuracy
• Typical maximum continuous output current: 3.5 A to 6.5 A
• Typical efficiency: 85% to 95%
• Switching frequency: approximately 400 kHz under heavy loads
• Typical no-load quiescent current: less than 0.2 mA
• Optional enable input for low-power state
• Power-good output for sequencing, fault detection, and voltage monitoring
• Integrated reverse-voltage protection, over-current protection, and over-temperature shutoff
• Three 0.086″ mounting holes for #2 or M2 screws