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Yes. Contact our team for datasheets, package information, product specifications, alternative parts and sourcing support related to L5991D.

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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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STMicroelectronics RFQ AVAILABLE

L5991D

IC OFFLINE SWITCH MULT TOP 16SO

Part Number: L5991D

Manufacturer: STMicroelectronics

Category: AC DC Converters, Offline Switches

Package: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: L5991D.pdf

Description: IC OFFLINE SWITCH MULT TOP 16SO

Select Quantity Stock: 1,002

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Qty.	Unit Price	Ext. Price
1+	$1.77000	$1.77
10+	$1.33000	$13.30
50+	$1.15400	$57.70
100+	$1.09955	$109.96
250+	$1.04202	$260.50
500+	$1.00736	$503.68
1000+	$0.97882	$978.82
2500+	$0.94870	$2371.75
5000+	$0.93055	$4652.75

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TECHNICAL RESOURCES

L5991D Technical Information

Specifications
FAQ
Hot Sale
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Specifications

Product Attribute: Attribute Value

Part Number: L5991D

Manufacturer: STMicroelectronics

Package: 16-SOIC (0.154", 3.90mm Width)

Series: -

Package/Case: 16-SOIC (0.154", 3.90mm Width)

Packaging: Tube

Product Status: Active

Output Isolation: Isolated

Internal Switch(s): No

Voltage - Breakdown: -

Topology: Boost, Flyback

Voltage - Start Up: 15 V

Voltage - Supply (Vcc/Vdd): 10V ~ 20V

Duty Cycle: 93%

Frequency - Switching: Up to 1MHz

Power (Watts): -

Fault Protection: Current Limiting, Over Voltage

Control Features: Frequency Control, Soft Start, Sync

Operating Temperature: -40°C ~ 150°C (TJ)

Grade: -

Qualification: -

Supplier Device Package: 16-SO

Mounting Type: Surface Mount

Frequently Asked Questions

1. How can I order L5991D 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 L5991D?

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

3. Are the stock and price of L5991D 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 L5991D?

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 L5991D?

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.

L5991D Procurement and Technical Support

L5991D is manufactured by STMicroelectronics. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

Haishengye Electronics supports customers sourcing L5991D 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 L5991D.

Part Number: L5991D

Manufacturer: STMicroelectronics

Package: 16-SOIC (0.154", 3.90mm Width)

Category: AC DC Converters, Offline Switches

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Shipping Method

DHL

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Shipped From

Shenzhen warehouse

Dispatch Time

Usually 1–3 business days after confirmation

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