The D42V110Fx family of synchronous buck (step-down) voltage regulators generates lower output voltages from input voltages as high as 60 V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters), which makes them much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large. These regulators can typically support continuous output currents between 6 A and 16 A, depending on the input voltage and output voltage (see the Maximum continuous output current section below). In general, the available output current is higher for the lower-voltage versions than it is for the higher-voltage versions, and it decreases as the input voltage increases.
The regulators have input reverse voltage protection and over-current protection. A thermal shutdown feature also helps prevent damage from overheating and a soft-start feature limits the inrush current and gradually ramps the output voltage on startup.
Features
- Input voltage: 12 V to 60 V (minimum input subject to dropout voltage considerations; see the dropout voltage section for details)
- Output voltage: 12 V with 3% accuracy
- Typical maximum continuous output current: 6 A to 12 A (see the maximum continuous output current graph below)
- Typical efficiency >90%, depending on input voltage and load (see the efficiency graph below)
- Switching frequency: ~800 kHz under heavy loads
- < 0.3 mA typical no-load quiescent current (see the quiescent current graph below)
- Optional enable input for disconnecting the load and putting the regulator into a low-power state that typically draws under 0.2 mA
- Power-good output can be used for sequencing, fault detection, and voltage monitoring
- Soft-start feature limits inrush current and gradually ramps output voltage
- Integrated reverse-voltage protection, over-current protection, and over-temperature shutoff
- Compact size: 1.25″ × 1.7″ × 0.355″ (31.8 mm × 43.2 mm × 9 mm)
- Four 0.086″ mounting holes for #2 or M2 screws
Dimensions
| Size: | 1.25″ × 1.7″ × 0.355″ |
|---|---|
| Weight: | 15 g |
General specifications
| Minimum operating voltage: | 12 V1 |
|---|---|
| Maximum operating voltage: | 60 V |
| Continuous output current: | 9 A2 |
| Output voltage: | 12 V |
| Reverse voltage protection?: | Y |
| Maximum quiescent current: | 10 mA3 |
| Output type: | fixed 12V |