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L5991D The STMicroelectronics L5991D013TR is an offline switch IC designed for power management applications. It operates within a 10V to 20V supply range and features a switching frequency up to 1MHz.
Mfr Part #:

L5991D

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics L5991D013TR is an offline switch IC designed for power management applications. It operates within a 10V to 20V supply range and features a switching frequency up to 1MHz.
✓ Total Stock: 2,250 pcs
$ Price Range: $0.75

L5991D Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Fe Components ✓
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2,250 pcs
On Request
2250 pcs On Request 1 On Request On Request On Request On Request On Request
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L5991D Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Duty Cycle
Fault Protection
Frequency
Internal Switch(s)
Mounting Type
Operating Temperature
Output Isolation
Package / Case
Supplier Device Package
Tape & Reel
Topology
Voltage
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L5991D Description

Short technical summary and product information.

The STMicroelectronics L5991D013TR is an integrated circuit designed for offline switching power supply applications. It falls under the Power Management (PMIC) category, specifically for AC/DC converters and offline switchers.

 

Key electrical specifications include an operating voltage range of 10V to 20V and a startup voltage of 15V. The device supports a switching frequency of up to 1MHz with a duty cycle of 93%. Fault protection is provided through current limiting and over-voltage features. Control features include frequency control, soft start, and synchronization.

 

This IC is housed in a 16-SOIC package and is designed for surface mount installation. The operating temperature range is -40°C to 150°C (TJ). The topology supports both Boost and Flyback configurations, with isolated output.

 

Compliance information indicates RoHS3 compliance, an MSL of 1 Unlimited, and REACH Unaffected status. The part is packaged in Tape & Reel (TR).

L5991D Quick Information

Product Type: Offline Switch IC
Canonical Name: STMicroelectronics L5991D013TR Offline Switch IC
Subcategory: Offline Switcher

L5991D Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

L5991D Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

L5991D Features

  • Offline switch IC for power management.
  • 10V to 20V operating voltage range.
  • Up to 1MHz switching frequency.
  • Surface mount 16-SOIC package.
  • -40°C to 150°C operating temperature.

L5991D Applications

  • Used in AC-DC offline switching power supplies
  • Suitable for boost and flyback converter topologies
  • Ideal for isolated power supply designs
  • Applied in current limiting and overvoltage protection circuits
  • Used in frequency-controlled switching regulator systems

L5991D FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the L5991D?

The operating voltage is 10V to 20V.

What is the startup voltage?

The startup voltage is 15V.

What switching frequency does it support?

Up to 1MHz.

What topologies are supported?

Boost and Flyback.

Does the L5991D have an internal switch?

No, it requires an external switching MOSFET.

What fault protections are included?

Current limiting and overvoltage protection.

What is the operating temperature range?

-40°C to 150°C (junction temperature).

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