ST L5981

Manufacturer No:

L5981

Manufacturer:

Package:

8-VFDFN Exposed Pad

Description:

8 Terminals 2.9V 8-Pin L5981 DC DC Voltage Regulator SWITCHING REGULATOR 1 Outputs 250kHz~1MHz Tube 8-VFDFN Exposed Pad

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In Stock :Available

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L5981 information

ST L5981 technical specifications, attributes, parameters and parts with similar specifications to ST L5981.

Type
Parameter

Lifecycle Status
ACTIVE (Last Updated: 8 months ago)

Mount
Surface Mount

Mounting Type
Surface Mount

Package / Case
8-VFDFN Exposed Pad

Number of Pins
8

Operating Temperature
-40°C~150°C TJ

Packaging
Tube

JESD-609 Code
e3

Part Status
Discontinued

Moisture Sensitivity Level (MSL)
1 (Unlimited)

Number of Terminations
8

ECCN Code
EAR99

Terminal Finish
Matte Tin (Sn) - annealed

Subcategory
Switching Regulator or Controllers

Technology
MOS

Terminal Position
DUAL

Peak Reflow Temperature (Cel)
260

Terminal Pitch
0.5mm

Time@Peak Reflow Temperature-Max (s)
30

Base Part Number
L5981

Function
Step-Down

Number of Outputs
1

Output Voltage
18V

Output Type
Adjustable

Voltage - Input (Min)
2.9V

Input Voltage-Nom
12V

Analog IC - Other Type
SWITCHING REGULATOR

Output Configuration
Positive

Voltage - Output (Min/Fixed)
0.6V

Topology
Buck

Control Mode
VOLTAGE-MODE

Frequency - Switching
250kHz~1MHz

Synchronous Rectifier
No

Min Output Voltage
600mV

Height
880μm

Length
3mm

Width
3mm

RoHS Status
RoHS Compliant

Lead Free
Lead Free

Download datasheets and manufacturer documentation for ST L5981.

Datasheets:

stmicroelectronics-l5981tr-datasheets-3420.pdf

L5981 Description

The L5981 is a step-down switching regulator with a 1.5 A (min.) current restricted integrated Power MOSFET that can deliver more than 1 A DC current to the load depending on the application. The input voltage can be set between 2.9 V and 18 V, while the output voltage can be set between 0.6 V and VIN. With a minimum input voltage of 2.9 V, the L5981 can also be used on a 3.3 V bus.

The L5981, which requires only a few external components, features an internal 250 kHz switching frequency oscillator that can be externally modified up to 1 MHz.

L5981 Features

1A DC output current
2.9 V to 18 V input voltage
Output voltage adjustable from 0.6 V
250 kHz switching frequency, programmable up to 1 MHz
Internal soft-start and inhibit
Low dropout operation: 100 % duty cycle
Voltage feed-forward
Zero loads current operation
Overcurrent and thermal protection
VFQFPN8 3 mm x 3 mm package

L5981 Applications

LED driving
Consumer: STB, DVD, DVD recorder, car audio, LCD TV, and monitors
Industrial: chargers, PLD, PLA, FPGA
Networking: XDSL, modems, DC-DC modules
Computer: optical storage, hard disk drive, printers, audio/graphic cards

User Guide

PURCHASE

Please verify all part numbers, quantities, and packaging preferences before placing your order. If substitutions are acceptable, please indicate this clearly. For time-sensitive projects, confirm estimated delivery dates and stock availability in advance. Once submitted, changes or cancellations may not be possible, especially for items marked as non-cancellable/non-returnable (NCNR). For international shipments, please ensure all import documentation is complete and accurate to avoid delays.

MEANS OF PAYMENT

For your convenience, we accept multiple payment methods in USD, including PayPal, Credit Card, and Wire Transfer. Net terms may be available for qualified customers upon approval.

RFQ (REQUEST FOR QUOTATIONS)

Please ensure the part numbers and quantities are accurate and complete when submitting your RFQ.
Provide target prices and acceptable alternatives, if any, to speed up the quotation process.

IMPORTANT NOTICE

Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.

Step1：Prepare product

Step2：Desiccant Protection

Step3：Vacuum Packaging

Step4：Individual Package

Step5：Anti-collision Filling

Step6：Packaging Box

SHIPPING COST

1. Shipping starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).
2. Some specific products need to reach the minimum order quantity.
3. It may cost additional remote fees for delivery if you are in a remote area.

SHIPPING METHOD

Currently, our products are shipped through DHL, FedEx, SF, and UPS.

DELIVERY TIME

1. Once the goods are shipped, estimated delivery time depends on the shipping methods you chose: FedEx International, 5-7 business days.
2. For in-stock parts, orders normally could be shipped out within 1-2days.