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A81805KESJSR

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A81805KESJSR

A81805KESJSR

$2.91
  • Description：IC REG BUCK 3.3V 2.5A 20QFN
  • Series：-
  • Mfr：Allegro MicroSystems
  • Package：Tape & Reel (TR),Cut Tape (CT)

SKU:7e09bd89ccc4 Category: Brand:

　　
  • Quantity
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Product Detailed Parameters

  • Description：IC REG BUCK 3.3V 2.5A 20QFN
  • Series：-
  • Mfr：Allegro MicroSystems
  • Package：Tape & Reel (TR),Cut Tape (CT)
  • Function：Step-Down
  • Output Configuration：Positive
  • Topology：Buck
  • Output Type：Fixed
  • Number of Outputs：1
  • Voltage - Input (Min)：3.5V
  • Voltage - Input (Max)：36V
  • Voltage - Output (Min/Fixed)：3.3V
  • Voltage - Output (Max)：-
  • Current - Output：2.5A
  • Frequency - Switching：400kHz ~ 2.5MHz
  • Synchronous Rectifier：Yes
  • Operating Temperature：-40°C ~ 150°C (TJ)
  • Mounting Type：Surface Mount, Wettable Flank
  • Package / Case：20-VFQFN Exposed Pad
  • Supplier Device Package：20-QFN (4x4)
  • Grade：-
  • Qualification：-

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A81805KESJSR

How to buy
Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.
Payment Method
Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.
Delivery time
In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.
Freight calculation
Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.
Mode of Transportation
We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.
Return and Refund
Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.

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Buying Guide
Summary

Allegro MicroSystems A81805KESJSR is an electronic component in Voltage Regulators - DC DC Switching Regulators category. Key specs: description: IC REG BUCK 3.3V 2.5A 20QFN; packaging: Tape & Reel (TR),Cut Tape (CT); temperature: -40°C ~ 150°C (TJ); package/case: 20-VFQFN Exposed Pad; mounting: Surface Mount, Wettable Flank; frequency range: 400kHz ~ 2.5MHz; output type: Fixed.

Selection Notes
  • For A81805KESJSR, confirm package/case 20-VFQFN Exposed Pad, mounting Surface Mount, Wettable Flank to ensure footprint compatibility.
  • For A81805KESJSR, validate the operating temperature range (-40°C ~ 150°C (TJ)) against your environment.
  • For A81805KESJSR, confirm the frequency range (400kHz ~ 2.5MHz) fits your signal band and filtering plan.
  • For A81805KESJSR, match interface/output type (Fixed) when selecting alternatives or second sources.
FAQ

What should I provide for an accurate quote for A81805KESJSR?
Send the part number (A81805KESJSR), quantity, target delivery date, and any required packaging or documentation.

Who is the manufacturer/brand for A81805KESJSR?
Allegro MicroSystems

What is the mounting type of A81805KESJSR?
Surface Mount, Wettable Flank

What is the frequency range of A81805KESJSR?
400kHz ~ 2.5MHz

Application Scenarios
In the Voltage Regulators - DC DC Switching Regulators category, Allegro MicroSystems A81805KESJSR is often evaluated by how well it fits electrical, thermal, and mechanical constraints in the target system. They are often selected based on safety requirements, mechanical constraints, and real-world switching stress. Well-chosen switching elements improve safety and reduce maintenance costs. In appliances, user-facing switches must endure high cycle counts while meeting safety and ingress requirements. In safety circuits, reliable switching prevents unintended motion during maintenance and fault conditions. Overall, it improves predictability by keeping key performance stable across manufacturing variance and operating conditions.
A81805KESJSRA81805KESJSR
$2.91
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