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Name: LM51551QDSSTQ1
Brand: Texas Instruments
SKU: LM51551QDSSTQ1
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 LM51551QDSSTQ1

Part No.:: LM51551QDSSTQ1

Manufacturer:: Texas Instruments

Package:: 12-WFDFN Exposed Pad

Datasheet:: LM51551QDSSTQ1.pdf

Description:: POWER MANAGEMENT

In Stock:: 2519

Quantity:: Add To Cart

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LM51551QDSSTQ1 Specifications

Package/Case:
12-WFDFN Exposed Pad
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
Automotive, AEC-Q100
ProductStatus:
Active
OutputType:
Transistor Driver
Function:
Step-Up, Step-Up/Step-Down
OutputConfiguration:
Positive
Topology:
Boost, Flyback, SEPIC
NumberofOutputs:
1
OutputPhases:
1
Voltage-Supply(Vcc/Vdd):
2.97V ~ 45V
Frequency-Switching:
100kHz ~ 2.2MHz
DutyCycle(Max):
93%
SynchronousRectifier:
No
ClockSync:
Yes
SerialInterfaces:
-
ControlFeatures:
Soft Start
OperatingTemperature:
-40°C ~ 150°C (TJ)
MountingType:
Surface Mount, Wettable Flank

LM51551QDSSTQ1 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including LM51551QDSSTQ1 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 LM51551QDSSTQ1 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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LM51551QDSSTQ1 information

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LM51551QDSSTQ1 Typical application Circuitry

LM51551QDSSTQ1

Texas Instruments created the high voltage synchronous buck converter integrated circuit (IC) known as the LM51551QDSSTQ1.This component is typically used for the conversion of higher voltage to lower voltage in electronic devices.

Key Features of the LM51551QDSSTQ1:

1. Wide Input Voltage Range: The LM51551QDSSTQ1 has a wide input voltage range of 5.5V to 75V, which makes it versatile for a variety of applications.

2. High Efficiency: This buck converter utilizes synchronous rectification to deliver high efficiency, thereby saving energy.

3. Adjustable Switching Frequency: It provides the flexibility to set the switching frequency from 100kHz to 2.5MHz, which allows for the optimization of size, efficiency, and transient response.

4. Advanced Protection Features: The LM51551QDSSTQ1 includes features like under voltage lockout, thermal shutdown, and hiccup-mode overcurrent protection to enhance system reliability.

Applications for the LM51551QDSSTQ1 include:

The LM51551QDSSTQ1 is frequently used in products including telecommunications equipment, consumer electronics, vehicle power supply, and industrial power supplies.

Detailed Circuit Connection - Industrial Power Supply Example:

- Pin 1 (VIN): This pin accepts the input voltage. Connect this pin to your power source within the IC's input voltage range.

- Pin 2 (EN/UVLO): This is the enable and under-voltage lockout pin. Connect a resistor divider to this pin to set the UVLO threshold, or apply a digital signal to enable or disable the IC.

- Pin 3 (RT/CLK): This pin sets the switching frequency. For synchronization, connect a resistor to the ground or an external clock signal.

- Pin 4 (FB): This pin serves as a feedback connector. You can change the output voltage to the desired value by connecting a series of resistors to a resistor divider from the output voltage to ground.

- Pin 5 (SS/TR): This pin is used for tracking and gentle starting. To regulate the output voltage's startup ramp, connect a capacitor from this pin to the ground.

- Pin 6 (PGND): an electrical ground pin. You should connect this pin to your system's ground.

- Pin 8 (BOOT): This is the bootstrap pin. Between this pin and the SW pin, a capacitor must be connected in order to supply the high-side gate drive supply.

- Pin 9 (SW): This is the switch node pin. Connect the output inductor and capacitor to this pin.

Design Considerations:

1. Component Selection: Make sure to select components that are capable of handling the operational voltage and current levels of the LM51551QDSSTQ1. Consider the switching frequency when selecting the external inductor and capacitors.

2. Thermal Management: Good thermal management is critical for reliable operation. Ensure that the IC is properly heatsinked to prevent overheating.

3. PCB Layout: To improve thermal performance and lower noise, minimize trace lengths to lower parasitic inductance and increase ground-plane coverage.

In conclusion, the LM51551QDSSTQ1 is a powerful, high voltage synchronous buck converter that is well-suited for a wide range of applications. It is a fantastic option for effective voltage conversion because of its cutting-edge features and versatility.

LM51551QDSSTQ1 FAQ

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6. What is the process for return or replacement of LM51551QDSSTQ1?

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 LM51551QDSSTQ1 we delivered, we will accept the replacement or return of the LM51551QDSSTQ1 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 LM51551QDSSTQ1.

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

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations