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Name: LT3757IDD#TRPBF
Brand: Analog Devices Inc.
SKU: LT3757IDD#TRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Analog Devices Inc. LT3757IDD#TRPBF

Part No.:: LT3757IDD#TRPBF

Manufacturer:: Analog Devices Inc.

Package:: 10-WFDFN Exposed Pad

Datasheet:: LT3757IDD#TRPBF.pdf

Description:: IC REG CTRLR MULT TOPOLOGY 10DFN

In Stock:: 14307

Quantity:: Add To Cart

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LT3757IDD#TRPBF Specifications

Package/Case:
10-WFDFN Exposed Pad
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
OutputType:
Transistor Driver
Function:
Step-Up, Step-Up/Step-Down
OutputConfiguration:
Positive and Negative
Topology:
Boost, Flyback, SEPIC
NumberofOutputs:
1
OutputPhases:
1
Voltage-Supply(Vcc/Vdd):
2.9V ~ 40V
Frequency-Switching:
100kHz ~ 1MHz
DutyCycle(Max):
-
SynchronousRectifier:
No
ClockSync:
Yes
SerialInterfaces:
-
ControlFeatures:
Enable, Frequency Control, Soft Start
OperatingTemperature:
-40°C ~ 125°C (TJ)
MountingType:
Surface Mount

LT3757IDD#TRPBF this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including LT3757IDD#TRPBF price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for LT3757IDD#TRPBF to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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LT3757IDD#TRPBF information

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LT3757IDD#TRPBF Typical application Circuitry

LT3757IDD#TRPBF is a high-efficiency, synchronous, fixed frequency step-up DC/DC converter with an internal 3.5A, 60V switch.

Application Scenario:

In portable electronic devices, LT3757IDD#TRPBF can be utilized to efficiently boost the input voltage from a low-voltage battery to a higher output voltage required by power-hungry components, such as high-brightness LEDs in handheld flashlights.

Circuit Design:

To design a step-up LED driver circuit using LT3757IDD#TRPBF, follow these steps:

1. Input Power Supply:

Connect the positive terminal of the battery to the VIN pin of LT3757IDD#TRPBF and the negative terminal to the ground (GND) pin. Ensure proper decoupling capacitors are placed close to the VIN and GND pins to filter noise and stabilize the input voltage.

2. Inductor and Capacitor Selection:

Choose an appropriate inductor and output capacitor based on the desired output voltage and current requirements. The inductor should be rated for the desired output current and have low equivalent series resistance (ESR). Similarly, select output capacitors with low equivalent series resistance and adequate capacitance to handle the output ripple voltage.

3. Feedback and Compensation:

Connect the FB pin of LT3757IDD#TRPBF to a voltage divider network consisting of resistors to set the desired output voltage. Implement compensation components, such as a compensation capacitor, to stabilize the feedback loop and ensure stable operation.

4. LED Connection:

Connect the anode of the LED string to the SW pin of LT3757IDD#TRPBF and the cathode to the output capacitor. Ensure proper current limiting resistors are placed in series with each LED to regulate the LED current and prevent overcurrent conditions.

5. Enable and Soft-Start:

Connect the EN/UVLO pin of LT3757IDD#TRPBF to a voltage source to enable the device. Implement soft-start functionality using an external capacitor connected to the SS pin to control the rise time of the output voltage and minimize inrush current during startup.

Considerations:

When designing the circuit, it's essential to consider:

- Efficiency Optimization: Select components and operating parameters to maximize the efficiency of the converter and minimize power losses.

- Thermal Management: Ensure adequate heat sinking or thermal vias to dissipate heat generated by the converter and prevent overheating.

- Output Voltage Accuracy: Calibrate the feedback network to achieve the desired output voltage accuracy over the specified operating conditions.

- LED Protection: Incorporate features such as overcurrent protection and thermal shutdown to safeguard the LEDs from damage due to excessive current or temperature.

- EMI/EMC Compliance: Design the layout and shielding to minimize electromagnetic interference and ensure compliance with electromagnetic compatibility regulations.

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6. What is the process for return or replacement of LT3757IDD#TRPBF?

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 LT3757IDD#TRPBF we delivered, we will accept the replacement or return of the LT3757IDD#TRPBF 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 LT3757IDD#TRPBF.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations