New products: D45V1ExFx tiny 65V max input step-down voltage regulators

We just released the new D45V1ExFx line of small voltage regulators that can efficiently deliver up to 100 mA from input voltages up to 65 V. The small size, high efficiency, and wide input voltage range make these especially worth considering for low-power projects involving wildly fluctuating sources such as solar panels (you can see from my post yesterday that I have had solar on my mind lately) and other energy harvesting technologies. You might also just want the peace of mind of having the extra input voltage margin on something like a 24 V project that might have occasional spikes from something electrically noisy also being supplied by the same line. Or you might just have a few of these around for their small size and high efficiency at low currents.

Typical efficiency of the Step-Down Voltage Regulator D45V1ExF5.

(The 70-90% efficiency by itself is not particularly notable, but that efficiency is maintained to output currents of a few mA, which is kind of special.)

We are offering basically the same regulator circuit in two form factors. The D45V1E1Fx family has components on both sides of the PCB and measures just 0.3″ × 0.5″, making them our smallest step-down regulators.

D45V1E1Fx step-down voltage regulator basic dimensions with US quarter for size reference.

The larger D45V1E2Fx versions take up twice the area at 0.5″ × 0.6″, but they are thinner and, more importantly, offer two extra pins, including a precision enable input that can be used to set a cutoff voltage.

D45V1E2Fx step-down voltage regulator pinout.

We have a 1 MΩ pull-up resistor on the enable input, which means that if you pull that line low, you will lose about 1 μA per volt on your input. At higher input voltages, this current is higher than the quiescent (no-load) current the regulator consumes, so if you are just powering a microcontroller with a low idle or sleep current, you might be better off just using those low-power states to save energy, but if your load continuously draws more current, the shutdown feature could help prevent over-discharging your battery.

As with our other electronics products, we make these at our Las Vegas, Nevada headquarters, so we can quickly customize them for other output voltages besides our stock versions of 3.3 V, 5 V, and 12 V (depending on the customization, we can usually do custom production runs for setup fees starting around $250).

Introductory special discount! Try some out for only $3.33 each using our introductory special coupon, D45V1EXINTRO (limit 3 per version)!

Related products

	12V, 100mA Step-Down Voltage Regulator D45V1E2F12
	5V, 100mA Step-Down Voltage Regulator D45V1E2F5
	3.3V, 100mA Step-Down Voltage Regulator D45V1E2F3
	12V, 100mA Step-Down Voltage Regulator D45V1E1F12
	5V, 100mA Step-Down Voltage Regulator D45V1E1F5
	3.3V, 100mA Step-Down Voltage Regulator D45V1E1F3