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HomeProductsIntegrated Circuits (ICs)PMIC - LED DriversLM27951SD
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LM27951SD - Texas Instruments

Manufacturer Part Number
LM27951SD
Manufacturer
Texas Instruments
Allelco Part Number
32D-LM27951SD
Warranty
1 Year Allelco Warranty - Find out more
Parts Description
IC LED DRV RGLTR PWM 30MA 14WSON
Package
14-WSON (4x3)
Data sheet
1.LM27951SD.pdf ...

HTML Datasheet

LM27951.pdf

PCN Design/Specification

Wire Base Metal 05/Oct/2016.pdf
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Specifications

LM27951SD Tech Specifications
Texas Instruments - LM27951SD technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - LM27951SD

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Supply (Min) 2.8V  
Voltage - Supply (Max) 5.5V  
Voltage - Output 2.5V ~ 3.9V  
Type DC DC Regulator  
Topology Switched Capacitor (Charge Pump)  
Supplier Device Package 14-WSON (4x3)  
Series -  
Package / Case 14-WFDFN Exposed Pad  
Package Tape & Reel (TR)  
Product Attribute Attribute Value  
Operating Temperature -40°C ~ 85°C (TA)  
Number of Outputs 4  
Mounting Type Surface Mount  
Internal Switch(s) Yes  
Frequency 750kHz  
Dimming PWM  
Current - Output / Channel 30mA  
Base Product Number LM27951  
Applications Backlight  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

LM27951SD

Manufacturer

Texas Instruments

Introduction

The LM27951SD is a power management integrated circuit (PMIC) designed for LED driving applications, specifically optimized for backlighting solutions.

Product Features and Performance

Integrated switch mode charge pump regulator

Efficient power conversion

4 output channels for multiple LED driving

Supports PWM dimming for brightness control

High-frequency operation at 750kHz minimizes external components

Wide input voltage range from 2.8V to 5.5V

Adjustable output voltage from 2.5V to 3.9V

Up to 30mA current output per channel

Product Advantages

High efficiency due to switched capacitor topology

Compact solution for LED backlighting

Allows for small form factor designs

Low electromagnetic interference (EMI)

Key Technical Parameters

Topology: Switched Capacitor (Charge Pump)

Internal Switch(s): Yes

Number of Outputs: 4

Voltage - Supply (Min): 2.8V

Voltage - Supply (Max): 5.5V

Voltage - Output: 2.5V ~ 3.9V

Current - Output / Channel: 30mA

Frequency: 750kHz

Dimming: PWM

Quality and Safety Features

Built-in over-temperature protection

Under-voltage lockout (UVLO)

Compatibility

Designed to be used with a range of LEDs for backlight applications

Surface mount technology for easy integration into system designs

Application Areas

Backlighting for portable devices

LCD display illumination

Keypad backlighting for mobile devices

Product Lifecycle

Product Status: Not For New Designs

Potential near-end-of-life with a focus on existing designs rather than new applications

Replacements or upgrades may be available from Texas Instruments

Several Key Reasons to Choose This Product

Efficient power management for LED backlighting

Supports wide input voltage suitable for battery-powered devices

Multiphase charge pump for reduced input ripple and improved stability

Low power consumption enhances battery life

Flexible dimming options to adjust brightness levels

Robust thermal management features ensure reliable operation in various environments

Ease of integration with compact package and surface mount design

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments LM27951SD

Product Attribute LM27951SDX LM27951SDX/NOPB LM27952SDX LM27952SD
Part Number LM27951SDX LM27951SDX/NOPB LM27952SDX LM27952SD
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Frequency - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage - Supply (Max) - - - -
Number of Outputs - - - -
Voltage - Output - - - -
Internal Switch(s) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Type - - - -
Topology - - - -
Current - Output / Channel - - - -
Voltage - Supply (Min) - - - -
Series - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Dimming - - - -
Applications - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)

LM27951SD Datasheet PDF

Download LM27951SD pdf datasheets and Texas Instruments documentation for LM27951SD - Texas Instruments.

HTML Datasheet
LM27951.pdf
PCN Design/Specification
Wire Base Metal 05/Oct/2016.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2024

    I had a great experience purchasing items from Allelcoelec, I recommend

  • Uri ***al
    Jun 19, 2024

    Good comunication,
    Transpnt regarding the process and price.

  • Yaqu***l Ali
    Jun 19, 2024

    Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.

  • Lea ***
    Jun 19, 2024

    Morrey was very helpful and right on top of things!
    He replied quickly to my RFQ. He was very courteous and professional.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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LM27951SD Image

LM27951SD

Texas Instruments
32D-LM27951SD

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