Pololu 8.4V, 5A Step-Down Voltage Regulator D42V55F8
Converts up to 60V input to 8.4V output
Supports continuous currents from 3A to 8A
Includes reverse voltage and over-current protection
Features thermal shutdown and soft-start
Offers low-power state and power-good output
The Pololu 8.4V, 5A Step-Down Voltage Regulator D42V55F8 is a sophisticated synchronous buck voltage regulator designed to convert higher input voltages, up to 60 V, into a stable 8.4 V output. This regulator is highly efficient, particularly when there is a significant difference between the input and output voltages, due to its switching regulator design. It is capable of supporting continuous output currents ranging from 3 A to 8 A, contingent upon the specific input and output voltage conditions.
The regulator is equipped with 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 incorporated to prevent damage from overheating, while a soft-start feature is implemented to limit inrush current and gradually increase the output voltage during startup.
This device also offers an optional enable input for entering a low-power state, and a power-good output for sequencing, fault detection, and voltage monitoring. These features make it suitable for a variety of applications requiring efficient voltage regulation and robust protection mechanisms.
1x Pololu 8.4V, 5A Step-Down Voltage Regulator D42V55F8
25.4 x 9 mm (1 x 0.355")
Input voltage: 8.4 V to 60 V
Output voltage: 8.4 V with 3% accuracy
Typical maximum continuous output current: 3.5 A to 7 A
Typical efficiency: 80% 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
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