| Allicdata Part #: | LM34919TLX/NOPBTR-ND |
| Manufacturer Part#: |
LM34919TLX/NOPB |
| Price: | $ 0.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Texas Instruments |
| Short Description: | IC REG BUCK ADJ 0.6A 10USMD |
| More Detail: | Buck Switching Regulator IC Positive Adjustable 2.... |
| DataSheet: |  LM34919TLX/NOPB Datasheet/PDF |
| Quantity: | 1000 |
| Series: | -- |
| Packaging: | Tape & Reel (TR) |
| Part Status: | Active |
| Function: | Step-Down |
| Output Configuration: | Positive |
| Topology: | Buck |
| Output Type: | Adjustable |
| Number of Outputs: | 1 |
| Voltage - Input (Min): | 8V |
| Voltage - Input (Max): | 40V |
| Voltage - Output (Min/Fixed): | 2.5V |
| Voltage - Output (Max): | 35V |
| Current - Output: | 600mA |
| Frequency - Switching: | 2MHz |
| Synchronous Rectifier: | No |
| Operating Temperature: | -40°C ~ 125°C (TJ) |
| Mounting Type: | Surface Mount |
| Package / Case: | 10-WFBGA |
| Supplier Device Package: | 10-µSMD (1.51x1.97) |
| Base Part Number: | LM34919 |
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The LM34919TLX/NOPB offers a wide range of features, including spread-spectrum EMI performance, adjustable switching frequency, and adjustable output voltage. Additionally, the device is designed to minimize power dissipation while operating over a wide temperature range- from -40°C to +125°C. The LM34919TLX/NOPB is also capable of soft start and hiccup mode for reset during power surges and other sources of external noise.
Working Principle
The LM34919TLX/NOPB is an all-in-one DC/DC buck-boost synchronous converter. The device has two Buck and Boost regulators, each with independent, adjustable output voltages. The regulators are designed to automatically switch between buck and boost modes as needed, allowing them to produce outputs of either higher or lower voltages than the input voltage. The LM34919TLX/NOPB also features spread-spectrum EMI performance, reducing EMI emissions for adjacent sensitive components.
The LM34919TLX/NOPB contains two Power Fet MOSFETs that regulate the input and output voltages, as well as a high-side and low-side current-sense amplifier. The device’s control logic determines when and how to switch the MOSFETs depending on the input and output voltages. Depending on the output voltage, the buck or boost regulator is used. When the output voltage is lower than the input voltage, the buck regulator is used; when the output voltage is higher than the input voltage, the boost regulator is used.
The LM34919TLX/NOPB also features an adaptive frequency control loop which increases or decreases the switching frequency to reduce output ripple, as well as a current-mode control algorithm to accurately control the output current of the converters. Additionally, the device is designed to protect against over-voltage, under-voltage, over-current, and short-circuit conditions by shutting off the output MOSFETs when these occur.
The LM34919TLX/NOPB is an efficient and reliable solution for powering applications that require a high level of power efficiency and extended operating temperatures. With its wide range of features and advanced power management, the device is well-suited for industrial automation, digital signage, LEDs, and various other applications.
The specific data is subject to PDF, and the above content is for reference
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