Products > Integrated Circuits (ICs) > LT1765EFE-3.3

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Monolithic 3A, 1.25MHz Step-Down Switching Regulators; Package: TSSOP; No of Pins: 16; Temperature Range: -40°C to +125°C

  • Package/Case :
  • TSSOP16
  • Product Categories :
  • DC-DC Converters
  • RoHs Status:
  • Lead free/RoHS Compliant
  • Marking Code:
  • 1765EFE-3.3
  • In-stock:
  • 14000


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LT1765EFE-3.3 Product Details

The LT1765EFE-3.3 is a 1.25MHz monolithic buck switching regulator. A high efficiency 3A, 0.09Ω switch is included on the die together with all the control circuitry required to construct a high frequency, current mode switching regulator. Current mode control provides fast transient response and excellent loop stability.

New design techniques achieve high efficiency at high switching frequencies over a wide operating voltage range. A low dropout internal regulator maintains consistent performance over a wide range of inputs from 24V systems to Li-Ion batteries. An operating supply current of 1mA improves efficiency, especially at lower output currents. Shutdown reduces quiescent current to 15µA. Maximum switch current remains constant at all duty cycles. Synchronization allows an external logic level signal to increase the internal oscillator into the range of 1.6MHz to 2MHz.

Full cycle-by-cycle current control and thermal shutdown are provided. High frequency operation allows the reduction of input and output filtering components and permits the use of chip inductors.



  • 3A Switch in a Thermally Enhanced 16-Lead TSSOP or 8-Lead SO Package
  • Constant 1.25MHz Switching Frequency
  • Wide Operating Voltage Range: 3V to 25V
  • High Efficiency 0.09Ω Switch
  • 1.2V Feedback Reference Voltage
  • Uses Low Profile Surface Mount Components
  • Low Shutdown Current: 15µA
  • Synchronizable to 2MHz
  • Current Mode Loop Control
  • Constant Maximum Switch Current Rating at All Duty Cycles*
  • Available in 8-Lead SO and 16-Lead Thermally Enhanced TSSOP Packages



  • DSL Modems
  • Portable Computers
  • Regulated Wall Adapters
  • Battery-Powered Systems
  • Distributed Power

LT1765EFE-3.3 Pinout
(Picture: Pinout)

LT1765EFE-3.3 Block Diagram
(Picture: Diagram)

Technical Parameters

  • Supply Voltage (DC)
  • 25.0 V (max)
  • Number of Outputs
  • 2
  • Output Voltage
  • 3.30 V
  • Topology
  • Buck
  • Product Lifecycle Status
  • Transferred
  • Packaging
  • Bulk
  • Mounting Style
  • Surface Mount
  • Number of Pins
  • 16
  • Case/Package
  • RoHS
  • RoHS Compliant
  • Lead Free Status
  • Lead free

LT1765EFE-3.3 Documents

  • LT1765 Technical Documentation/Data sheet

LT1765EFE-3.3 Related Products

Ratings and Reviews (1)

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  • **ilva***

    Grazie,tutto perfetto cosigliatissimo.

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2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that LT1765EFE-3.3 is the original manufacturer or agent of AD?
We have a professional business development department to strictly test and verify the qualifications of AD original manufacturers and agents. All AD suppliers must pass the qualification review before they can publish their LT1765EFE-3.3 devices; we pay more attention to the channels and quality of LT1765EFE-3.3 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of LT1765EFE-3.3 chips? Including AD original factory information, DC-DC Converters application, LT1765EFE-3.3 pictures?
You can use Jotrin's intelligent search engine, or filter by Step-Down (Buck) Regulators ; Internal Power Switch Buck category, or find it through Analog Devices, Inc Information page.
Q: Are the AD's LT1765EFE-3.3 price and stock displayed on the platform accurate?
The AD's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for LT1765EFE-3.3, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Q: What is the process for returns or replacement of LT1765EFE-3.3?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LT1765EFE3.3 we delivered, we will accept the replacement or return of the LT1765EFE-3.3 only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of LT1765EFE-3.3.
(3)The LT1765EFE-3.3 is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
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Analog Devices, Inc

Analog Devices, Inc. was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965. The same year, the company released its first product, the model 101 op amp, which was a hockey-puck sized module used in test and measurement equipment. In 1967, the company published the first issue of its...
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