The Pololu D42V55F24 24V 4A Step-Down Voltage Regulator is a sophisticated device designed to efficiently convert higher input voltages, up to 60 V, into a stable 24 V output. This regulator is part of a family of synchronous buck regulators known for their high efficiency, particularly when there is a significant difference between input and output voltages. It is capable of supporting continuous output currents, typically ranging from 3 A to 8 A, depending on the specific input and output conditions.
This regulator 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 function limits inrush current and gradually increases the output voltage during startup.
The device is engineered with a typical efficiency of 90% to 95%, making it an ideal choice for applications requiring energy conservation. It operates at a switching frequency of approximately 400 kHz under heavy loads, and its low no-load quiescent current of less than 0.2 mA further enhances its efficiency. 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.
Six connections arranged on a 0.1″ grid for compatibility with solderless breadboards, 0.1″ male headers, and 0.1″ female headers.
25.4 x 25.4 x 11 mm (1 x 0.43")
Input voltage: 24 V to 60 V
Output voltage: 24 V with 3% accuracy
Typical maximum continuous output current: 2.5 A to 5 A
Typical efficiency: 90% 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
