Pololu 7.5V 3A Synchronous Step-Down Voltage Regulator D30V30F7

PololuSKU: RB-Pol-1057
Manufacturer #: 4894

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Description

  • Pololu 7.5V 3A Synchronous Step-Down Voltage Regulator D30V30F7
  • Highly efficient buck regulator
  • Wide input range up to 45V
  • Compact 0.7 x 0.8 inches size
  • Low dropout & quiescent current
  • Integrated protection features

The Pololu 7.5V 3A Synchronous Step-Down Voltage Regulator D30V30F7 is a highly efficient synchronous buck voltage regulator that produces a fixed output of 7.5 volts from input voltages up to 45 volts. Its switching regulator design offers superior efficiency compared to linear voltage regulators, particularly when there is a significant difference between the input and output voltages. The device is capable of supporting continuous output currents ranging from 2 to 3.5 amperes, with the exact current depending on the input and output voltages.

This regulator boasts a high degree of accuracy, maintaining the output voltage within 4% of the nominal value. It features a very low dropout voltage and operates at a switching frequency of approximately 700 kHz under heavy loads. To enhance efficiency under light loads, it includes a power-save mode that reduces the switching frequency. The quiescent current is also minimal, contributing to the overall efficiency of the device.

Additional functionalities include an enable input with a precise cutoff threshold, which allows for the disconnection of the load and the transition of the regulator into a low-power state. A "power good" output is provided to indicate when the regulator is unable to maintain the output voltage adequately. The device also employs frequency spread spectrum operation to minimize peak EMI noise and includes under-voltage lockout protection, a soft-start feature to limit inrush current, and integrated reverse-voltage protection up to 40 volts, as well as over-current and short-circuit protection, and over-temperature shutoff.

The compact dimensions of the regulator make it suitable for space-constrained applications. It also features mounting holes to facilitate installation.

The regulator includes six connections: power good, enable, input voltage, output voltage, and two ground connections. The "power good" indicator is an open-drain output that signals when the output voltage deviates significantly from the nominal value. To utilize this feature, an external pull-up resistor is required. The enable pin allows the regulator to be put into a low-power sleep state or reactivated, depending on the voltage applied. The input voltage powers the regulator, and the effective lower limit of this voltage is determined by the output voltage plus the regulator's dropout voltage. The regulated output voltage is provided at the VOUT connection.

During normal operation, this product can get hot enough to burn you. Take care when handling this product or other components connected to it.

  • 1x Pololu 7.5V 3A Synchronous Step-Down Voltage Regulator D30V30F7
  • 1x 6x1 Straight male header strip
  • 1x 5x1 Right-angle male header strip

The regulator includes an optional pin that can be separated with a pair of flush cutters and soldered into PG.

  • 0.7 x 0.8 x 0.355 / 17.8 x 20.3 x 9 mm (L x W x H)
  • Input voltage: 7.5 V to 45 V
  • Output voltage: 7.5 V with 4% accuracy
  • Typical maximum continuous output current: 2 A to 3.5 A
  • Typical efficiency of 80% to 95%
  • Very low dropout voltage
  • Switching frequency: ~700 kHz under heavy loads
  • Power-save mode for increased light load efficiency
  • Low quiescent current
  • Enable input with a precise cutoff threshold
  • “Power good” output indicates inadequate output voltage maintenance
  • Frequency spread spectrum operation for lower EMI noise
  • Under-voltage lockout protection
  • Soft-start feature for limiting inrush current
  • Integrated reverse-voltage protection up to 40 V
  • Over-current and short-circuit protection
  • Over-temperature shutoff
  • Compact size
  • Weight: 3.3 g

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