The Pololu 4.2-15V, 3A Fine-Adjust Step-Down Voltage Regulator W/ Adjustable Low-Voltage Cutoff D30V30MASCMA is a versatile voltage regulator designed for precise output voltage control ranging from 4.2 V to 15 V. It features an adjustable low-voltage cutoff and can deliver a continuous output current of up to 4 A, depending on the input and output voltages. The regulator is equipped with a precision 11-turn potentiometer for fine adjustments and operates with a switching frequency of approximately 700 kHz under heavy loads.
This compact regulator includes various protective features such as reverse-voltage protection up to 40 V, over-current and short-circuit protection, and over-temperature shutoff. It also incorporates a soft-start feature to limit inrush current and enhance operational efficiency. The device is designed with a power-save mode for increased efficiency under light loads and includes a 'power good' indicator for monitoring purposes.
1x 6×1 Straight male header strip
1x 6×1 Right-angle male header strip
15.2 x 25.4 x 9 mm (0.6 x 1.0355")
Input voltage range: VOUT to 45 V
Output voltage: 4.2 V to 15 V, adjustable with an 11-turn potentiometer
Maximum continuous output current: 1 A to 4 A
Adjustable low-voltage cutoff threshold with an 11-turn potentiometer
Efficiency: 80% to 95%
Switching frequency: approximately 700 kHz under heavy loads
Power-save mode for enhanced efficiency at light loads
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at RoboItchi's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
The RA number is valid for 30 days. The returned item must be received within that period.
The RA number must be included with the return.
Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RoboItchi's troubleshooting process or of a verified shipping error by RoboItchi.
Refunds are processed within 7 days after receipt and inspection of the returned item.
A ¥10,000 cleaning fee may apply to domestic robots returned in used or unclean condition.
A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RoboItchi's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
On-Demand Items — Standard catalogue products not stocked by RoboItchi and ordered specifically to fulfill a customer request.
To request a return, submit a support ticket from your account under My Support Tickets to obtain a Return Authorization (RA) number. Returns without an RA number will be refused.
