The Pololu 1.4-7V, 3.8A Fine-Adjust Step-Down Voltage Regulator W/ Adjustable Low-Voltage Cutoff D30V33MALCMA is a versatile voltage regulator designed to efficiently convert a wide range of input voltages from 3 V to 45 V into a stable output voltage between 1.4 V and 7 V. This regulator is capable of delivering a continuous output current typically ranging from 3 A to 5 A, depending on operating conditions. It is engineered for high efficiency, achieving typical efficiency levels between 80% and 95%, and incorporates several protective features to ensure reliable operation.
The device includes a precision 11-turn potentiometer, allowing for fine adjustments of both the output voltage and the low-voltage cutoff threshold. It is equipped with a soft-start function, under-voltage lockout protection, and integrated reverse-voltage protection up to 40 V. Additionally, the regulator features a power-save mode to enhance efficiency under light loads and a "power good" output to signal when the output voltage is not adequately maintained.
Compact in design, the regulator measures 0.9" × 1.2" × 0.3" and includes mounting holes for secure installation. It also supports through-hole connections for headers and terminal blocks, facilitating easy integration into various applications. Note: Ensure proper handling to avoid exposure to conditions exceeding the specified voltage and current limits.
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.
