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Name: LM3409HVMY/NOPB
Brand: Texas Instruments
SKU: LM3409HVMY/NOPB
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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Texas Instruments LM3409HVMY/NOPB

Part No.:: LM3409HVMY/NOPB

Manufacturer:: Texas Instruments

Package:: 10-PowerTFSOP, 10-MSOP (0.118, 3.00mm Width)

Datasheet:: LM3409HVMY/NOPB.pdf

Description:: IC LED DRIVER CTRLR PWM 10HVSSOP

In Stock:: 3567

Quantity:: Add To Cart

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LM3409HVMY/NOPB Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
Type:
DC DC Controller
Topology:
Step-Down (Buck)
InternalSwitch(s):
No
NumberofOutputs:
1
Voltage-Supply(Min):
6V
Voltage-Supply(Max):
75V
Voltage-Output:
-
Current-Output/Channel:
-
Frequency:
-
Dimming:
Analog, PWM
Applications:
Automotive
OperatingTemperature:
-40°C ~ 125°C (TJ)
MountingType:
Surface Mount

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LM3409HVMY/NOPB information

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LM3409HVMY/NOPB Typical application Circuitry

LM3409HVMY/NOPB

The LM3409HVMY/NOPB is a variant within the LM3409 series, specifically designed as a constant current buck controller for LED drivers. This integrated circuit is optimized for driving high-power, high-brightness LEDs, making it an ideal component for various lighting applications that demand energy efficiency and precision control.

1. Power Input and Ground: Pin 1, labeled VIN, is where the input voltage supply is connected. The range for this supply voltage aligns with the IC's specifications. Pin 2 is the PGND, or power ground, and should be tied to the system's ground.

2. Feedback and Compensation: The FB pin (Pin 3) is critical for setting the LED current regulation point. It's connected to a resistor network that senses the LED current. In order to maintain the control loop, a network of resistors and capacitors is linked to the COMP pin (Pin 4), which is utilized for loop compensation.

3. Dimming Controls: The LM3409HVMY/NOPB features a PWM dimming control through Pin 5, labeled PWM. This pin allows modulation of the LED brightness. Additionally, Pin 6, the EN/DIM pin, serves as an enable pin and can also be used for analog dimming control.

4. Switch Node and Current Sensing: The switching node is located at Pin 7 (SW), which connects to the inductor and the switching element. Current sensing is facilitated through Pins 8 and 9, labeled CSN and CSP, respectively. These pins are used to monitor the current through the LEDs, ensuring consistent lighting.

5. Circuit Implementation: In a standard application, the LM3409HVMY/NOPB is used to control a string of LEDs connected in series. The supply voltage is applied to VIN, and the LED string is connected to the SW pin, with the return path to ground. Between the CSN and CSP pins, the current flowing via the LEDs is seen. The feedback loop, involving the FB and COMP pins, regulates this current to a desired level. PWM dimming is achieved by applying a PWM signal to the PWM pin, and analog dimming can be controlled via the EN/DIM pin.

6. Design Considerations: When designing with the LM3409HVMY/NOPB, attention should be given to selecting appropriate external components, like the inductor, current sensing resistor, and compensation network. These components are critical for achieving stable and efficient operation, as well as meeting the desired performance criteria for LED brightness and color stability.

Overall, the LM3409HVMY/NOPB, as an integral part of the LM3409 series, provides a robust and flexible solution for high-power LED driving applications, offering precise control over LED illumination characteristics.

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6. What is the process for return or replacement of LM3409HVMY/NOPB?

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(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 LM3409HVMY/NOPB.

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

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