
Allicdata Part #: | LM34910CSDE/NOPBTR-ND |
Manufacturer Part#: |
LM34910CSDE/NOPB |
Price: | $ 1.67 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC REG BUCK ADJ 1.25A 10WSON |
More Detail: | Buck Switching Regulator IC Positive Adjustable 2.... |
DataSheet: | ![]() |
Quantity: | 250 |
250 +: | $ 1.52216 |
500 +: | $ 1.36581 |
1250 +: | $ 1.15189 |
Voltage - Output (Min/Fixed): | 2.5V |
Base Part Number: | LM3490 |
Supplier Device Package: | 10-WSON (4x4) |
Package / Case: | 10-WDFN Exposed Pad |
Mounting Type: | Surface Mount |
Operating Temperature: | -40°C ~ 125°C (TJ) |
Synchronous Rectifier: | No |
Frequency - Switching: | -- |
Current - Output: | 1.25A |
Voltage - Output (Max): | 45V |
Series: | -- |
Voltage - Input (Max): | 50V |
Voltage - Input (Min): | 8V |
Number of Outputs: | 1 |
Output Type: | Adjustable |
Topology: | Buck |
Output Configuration: | Positive |
Function: | Step-Down |
Part Status: | Active |
Packaging: | Tape & Reel (TR) |
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LM34910CSDE/NOPB (LM34910) is a Regulator with integrated switch that offers excellent efficiency and features in a small form factor. It is a member of the National Semiconductor Low-Dropout (LDO) family and is optimized for use in a wide variety of voltage regulation and power management applications.
The LM34910 is a switching regulator that provides a regulated output voltage with a wide variety of features designed to improve the overall performance and reliability of the system it is part of. The LM34910 uses a single inductor, two MOSFETs, and two resistors to form a switching regulator with high efficiency and fast transient response time. The LM34910 is rated for a maximum output voltage of 20 volts, a maximum output current of 3.3 amps, and a maximum input voltage of 24 volts.
The LM34910 is suitable for a wide variety of applications, including those where high efficiency, fast transient response, and low noise are required. Its architecture allows for quick and easy setup and offers low EMI and excellent acoustic noise levels for quiet operation. The power distributed via the LM34910 can be used for either AC/DC or DC/DC conversion and can support a wide variety of topologies. This allows the design engineer to maximize efficiency and power delivery while minimizing overall system cost.
The LM34910 is rated to operate over a temperature range of -40°C to 125°C, making it suitable for use in a variety of environments, such as automotive applications. The LM34910 incorporates a fixed voltage reference, a current sense amplifier, a pair of MOSFET drivers, and a PWM controller in a compact 6mm x 6mm LQFN package. It also features a wide input voltage operating range of 4.5V to 24V, allowing for flexibility in system design.
The LM34910 utilizes an integrated error amplifier to monitor and maintain the output voltage. An external reference voltage is applied to the REF terminal and is compared to the output voltage. If the output voltage is lower than the reference voltage, the error amplifier will increase the duty cycle of the MOSFET drivers, resulting in increased current flow through the inductor. If the output voltage is higher than the reference voltage, the error amplifier will decrease the duty cycle of the MOSFET drivers, resulting in decreased current flow through the inductor. This ensures that the output voltage remain within the rated tolerance.
The LM34910 also features a power good output to indicate the output voltage has reached its regulated voltage level and is ready for use. It also features an enable input which can be used to disable the regulator and prevent it from turning on. The LM34910 also features a high-frequency compensation pin (HFC), which allows the user to adjust the switching frequency dynamically to account for different load conditions. This allows the user to optimize the performance of the regulator to meet the requirements of their specific application.
The LM34910 is a highly efficient and reliable regulator that is well-suited for applications requiring high efficiency and fast transient response time. Its wide input voltage range and multiple features make it an ideal choice for a variety of applications. With its robust design and support for a variety of topologies, the LM34910 is an optimal choice for those designing an efficient and reliable system.
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