Can I request technical information for UM1540DB-18?

Yes. Contact our team for datasheets, package information, product specifications, alternative parts and sourcing support related to UM1540DB-18.

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UM1540DB-18 Union Semiconductor International Limited product image

UM1540DB-18 Union Semiconductor International Limited

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Contact our sourcing team for current stock, batch information, lead time, technical documents, alternative parts and volume pricing.

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: Technical Documents
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Union Semiconductor International Limited RFQ AVAILABLE

UM1540DB-18

5V Input, Low Quiescent Current

Part Number: UM1540DB-18

Manufacturer: Union Semiconductor International Limited

Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package: 4-XDFN Exposed Pad

Datasheet:: UM1540DB-18.pdf

Description: 5V Input, Low Quiescent Current

Select Quantity Stock: 87,696

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TECHNICAL RESOURCES

UM1540DB-18 Technical Information

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Specifications

Product Attribute: Attribute Value

Part Number: UM1540DB-18

Manufacturer: Union Semiconductor International Limited

Package: 4-XDFN Exposed Pad

Series: UM1540

Package/Case: 4-XDFN Exposed Pad

Packaging: Tape & Reel (TR)

Product Status: Active

Output Configuration: Positive

Output Type: Fixed

Number of Regulators: 1

Voltage - Input (Max): 6V

Voltage - Output (Min/Fixed): 1.8V

Voltage - Output (Max): -

Voltage Dropout (Max): 0.33V @ 200mA

Current - Output: 300mA

Current - Quiescent (Iq): 1.5 µA

Current - Supply (Max): -

PSRR: 56dB ~ 42dB (100Hz ~ 1kHz)

Control Features: Enable

Protection Features: Over Current, Over Temperature

Operating Temperature: -40°C ~ 125°C (TJ)

Grade: -

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 4-DFN (1x1)

Frequently Asked Questions

1. How can I order UM1540DB-18 from Haishengye Electronics?

Submit an RFQ directly on this page with your required quantity, target price and delivery requirements. Our sales team will review the request and provide a quotation.

2. How does Haishengye Electronics verify the quality of UM1540DB-18?

We work with qualified suppliers and review sourcing channels, traceability, packaging and product condition before shipment.

3. Are the stock and price of UM1540DB-18 updated in real time?

Electronic component inventory and prices may change frequently. Displayed values are references, and final stock and pricing will be confirmed in the quotation.

4. Which payment methods are supported?

Wire Transfer, PayPal, Alipay, WeChat, Credit Card, Western Union, MoneyGram and Escrow may be supported depending on the order and destination.

5. How is international shipping arranged?

International shipping may be arranged through DHL, UPS, FedEx, TNT and other logistics channels. Tracking information will be provided after shipment.

6. What is the return or replacement process for UM1540DB-18?

Contact our sales team within the agreed period if there are quantity differences, incorrect items or clear external defects. Products should remain unused and in their original packaging.

7. Can I request technical support for UM1540DB-18?

Yes. Contact our team for datasheets, package details, product specifications, alternative parts and sourcing assistance.

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Packaging and Shipping Protection

Step 1 Product Inspection

Step 2 Casing & Dry Pipe

Step 3 Anti-static Bags

Step 4 Inner Carton

Step 5 Shipping Label

Step 6 International Delivery

Packaging may be adjusted according to product type, quantity, moisture sensitivity and destination requirements.

UM1540DB-18 Procurement and Technical Support

UM1540DB-18 is manufactured by Union Semiconductor International Limited. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

Haishengye Electronics supports customers sourcing UM1540DB-18 and related electronic components for prototype development, maintenance, NPI, production preparation and one-stop BOM procurement.

Submit an RFQ to request the latest stock, price, lead time, batch information, alternative parts, package confirmation or technical documents for UM1540DB-18.

Part Number: UM1540DB-18

Manufacturer: Union Semiconductor International Limited

Package: 4-XDFN Exposed Pad

Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

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Transaction fees are charged according to the selected bank or payment system rules.

Shipping Method

DHL

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TNT

Shipped From

Shenzhen warehouse

Dispatch Time

Usually 1–3 business days after confirmation

Lead Time

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