These high-current step-down (buck) regulators generate a fixed 5 V output from input voltages up to 38 V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) and have a typical efficiency between 80% to 95%. The available output current is a function of the input voltage and efficiency, but the output current can typically be as high as 9 A.
Features:
- Input voltage: 5 to 38 V (see below for more details on the regulator’s dropout voltage, which affects the low end of the operating range)
- Fixed 5 V output (with 4% accuracy); this can be lowered by adding an external resistor between FB and VOUT
- Typical maximum continuous output current between 4 A and 8 A
- Integrated reverse-voltage protection, over-current and short-circuit protection, over-temperature shutoff, soft-start, and under-voltage lockout
- Typical efficiency of 80% to 95%, depending on input voltage and load; the switching frequency automatically changes at light loads to maintain high efficiencies
- 800 μA typical no-load quiescent current; can be reduced to 10 µA to 20 µA per volt on VIN by disabling the board
- “Power good” output indicates when the regulator cannot maintain its set output voltage
- Compact size: 1.6″ × 0.8″ × 0.3″ (40.6 × 20.3 × 7.6 mm)
- Four 0.086″ mounting holes for #2 or M2 screws
- Smaller holes for 0.1″ header pins and larger holes for terminal blocks offer several options for connecting to the board
Specifications:
- Minimum operating voltage: 5 V
- Maximum operating voltage: 38 V
- Continuous output current: 9 A
- Output voltage: 5 V
- Reverse voltage protection?: Y
- Maximum quiescent current: 15 mA
Documents:
Package Includes:
- 1 x Pololu 2866 Step-Down Voltage Regulator D24V90F5 - 5V, 9A
| Electrical Specifications | |
| Output Voltage | 5V |
| Output Current | 9A |
| Minimum Operating Voltage | 5V |
| Maximum Operating Voltage | 38V |
| Physical Attributes | |
| Weight | 4.8g |
| Dimensions | 1.6″ × 0.8″ × 0.3″ |
| Additional Information | |
| Warranty | |
Related Products
Pololu 2851 Step-Down Voltage Regulator D24V50F5 - 5V, 5A
This step-down (buck) regulator generates a fixed 5 V output from input voltages up to 38 V. It is a..
रo 2,494.73