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LM5146RGYR
+StücklisteIC REG CTRLR BUCK 20VQFN
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HerstellerTexas Instruments
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Herstellerteil #LM5146RGYR
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Paket VQFN-20
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Auf Lager2430
365 Tage Qualitätsgarantie
7*24 Stunden-Servicegarantie
90-Tage Kundendienstgarantie
Originalproduktgarantie
Spezifikationen
| Attribut | Wert |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Number of Outputs | 1 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 5.5V ~ 100V |
| Frequency - Switching | 100kHz ~ 1MHz |
| Duty Cycle(Max) | 99% |
| Synchronous Rectifier | Yes |
| Clock Sync | Yes |
| Control Features | Current Limit, Enable, Frequency Control, Phase Control, Power Good, Ramp, Soft Start |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount, Wettable Flank |
Übersicht
Description
Key features of the LM5146RGYR include its ability to operate with a wide input voltage range, typically from 3.8V to 65V, which provides flexibility in system design. It supports a high switching frequency of up to 1MHz, which enables smaller external components and compact design footprints. The device also integrates advanced protection features, including overcurrent protection, overvoltage protection, and thermal shutdown, ensuring robust and reliable operation. Additionally, the controller offers adjustable switching frequency and soft start, allowing for customizable performance based on specific application needs.
Overall, the LM5146RGYR is valued for its combination of efficiency, flexibility, and protection features, catering to demanding power conversion requirements.
Equivalent
Features
Key features include:
- Adjustable switching frequency from 100 kHz to 1 MHz, allowing design flexibility.
- Peak current-mode control for superior load and line regulation.
- An adaptive dead-time control for improved efficiency.
- Synchronization capability to an external clock.
- Programmable soft-start to limit inrush current during startup.
- Comprehensive protection features such as overcurrent protection, undervoltage lockout, and thermal shutdown.
- Optional spread spectrum frequency modulation to reduce EMI.
The device also offers a power-good output, enabling fault monitoring and sequencing. Its design is tailored for ease of use in high-performance, high-density power supply designs, commonly employed in industrial, communications, and computing systems.
Pinout
1. Input Voltage Range: Supports a wide input range for flexibility in various applications.
2. Synchronous Operation: Enhances efficiency by using both high-side and low-side MOSFET drivers.
3. Current Mode Control: Provides better transient response and loop stability.
4. Frequency Synchronization: Allows the switching frequency to be synchronized to an external clock.
5. Adjustable Frequency: Offers flexibility in design by setting the switching frequency.
6. Fault Protection: Includes features like undervoltage lockout (UVLO), overcurrent protection (OCP), and thermal shutdown to enhance reliability.
7. Soft Start and Pre-Bias Support: Ensures smooth startup and compatibility with pre-biased loads.
These features make the LM5146RGYR suitable for applications requiring efficient power conversion and robust performance.