LM3489 The Texas Instruments LM3489 is a hysteretic PFET buck controller designed for efficient power conversion. It operates over a wide input voltage range.
Mfr Part #:

LM3489

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LM3489 is a hysteretic PFET buck controller designed for efficient power conversion. It operates over a wide input voltage range.
✓ Total Stock: 36,160 pcs
$ Price Range: $0.78

LM3489 Available from 1 distributor

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✓ Non-Authorised
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LM3489 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Duty Cycle
Efficiency
Mounting Type
Number of Pins
SVHC Present

LM3489 Description

Short technical summary and product information.

The Texas Instruments LM3489 is a high-efficiency PFET switching regulator controller. It is designed for easy development of small, cost-effective buck regulators.

 

The hysteretic control architecture simplifies design by eliminating the need for control loop compensation. This controller offers a wide 4.5-V to 35-V input range and an adjustable output voltage from 1.239 V up to the input voltage.

 

Key features include 100% duty cycle operation, high efficiency up to 93%, and a maximum operating frequency greater than 1 MHz. It also provides current limit protection and a dedicated enable pin for shutdown mode, drawing only 7-µA supply current.

 

The LM3489 is available in an 8-pin VSSOP package, suitable for surface mounting. Its AEC-Q100 qualification makes it suitable for automotive applications.

LM3489 Quick Information

Product Type: DC DC Switching Controller
Canonical Name: LM3489 Hysteretic PFET Buck Controller
Subcategory: Buck Controller

LM3489 Compliance

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

LM3489 Estimated Pricing

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1+ $0.78 $0.78

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

LM3489 Features

  • Wide 4.5V to 35V input voltage range.
  • Adjustable output voltage from 1.239V.
  • High efficiency up to 93%.
  • 100% duty cycle operation.
  • AEC-Q100 qualified for automotive.

LM3489 Applications

  • Suitable for automotive applications.
  • Used in set-top boxes.
  • Ideal for DSL or cable modems.
  • Applicable for PC/IA systems.
  • Powers TFT monitors.

LM3489 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the input voltage range for the LM3489?

The input voltage range is 4.5 V to 35 V.

What is the adjustable output voltage range of the LM3489?

The output voltage is adjustable from 1.239 V up to the input voltage (VIN).

What is the typical efficiency of the LM3489?

The LM3489 offers a high efficiency of 93%.

What is the operating temperature range for the LM3489?

The device operates in an ambient temperature range of -40°C to 125°C.

What package type is the LM3489 available in?

The LM3489 is available in an 8-pin VSSOP package.

Is the LM3489 qualified for automotive applications?

Yes, the LM3489 is qualified for automotive parts and is AEC-Q100 qualified.

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