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LM5143RHAR
+Nomenclature3.5-V TO 65-V LOW-IQ, DUAL OUTPU
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FabricantTexas Instruments
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Pièce fabricant #LM5143RHAR
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Fiche technique LM5143RHAR DataSheet
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En stock4377
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Spécifications
| Attribut | Valeur |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Number of Outputs | 2 |
| Output Phases | 2 |
| Voltage - Supply (Vcc/Vdd) | 3.5V ~ 65V |
| Frequency - Switching | 100kHz ~ 2.2MHz |
| Duty Cycle (Max) | 100% |
| Synchronous Rectifier | Yes |
| Clock Sync | Yes |
| Control Features | Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 40-VFQFN Exposed Pad |
| Supplier Device Package | 40-VQFN (6x6) |
| Base Product Number | LM5143 |
Présentation
Description
Key features include integrated MOSFET drivers, programmable soft-start, and adjustable switching frequency (up to 1 MHz). It supports advanced protection mechanisms such as under-voltage lockout (UVLO), over-voltage protection (OVP), and thermal shutdown, ensuring robust operation. The LM5143RHAR is optimized for efficiency, minimizing power loss during operation, and is capable of driving high load currents.
Its compact QFN package facilitates space-constrained designs, making it a favored choice among engineers for creating reliable and efficient power supplies in various electronic systems. Overall, the LM5143RHAR is a versatile and efficient solution for high-voltage DC-DC conversion applications.
Equivalent
Features
1. Input Voltage Range: Supports 4.5V to 60V input voltage, suitable for automotive and industrial applications.
2. Output Current: Capable of driving high output current loads, making it ideal for power supplies.
3. Integrated Drivers: Features integrated high-side and low-side MOSFET drivers, enhancing efficiency and reducing external component count.
4. Adaptive Dead-Time Control: Optimizes switching performance and minimizes power losses.
5. Programmable Switching Frequency: Offers adjustable switching frequencies from 100 kHz to 1 MHz, providing design flexibility.
6. Voltage Mode Control: Ensures stable operation under various load conditions.
7. Protection Features: Includes over-voltage, under-voltage, and thermal shutdown protections for enhanced reliability.
8. Power Good Indicator: Provides an output flag to indicate proper operation.
9. Small Package: Comes in a compact HTQFN-32 package for space-constrained designs.
These features make the LM5143RHAR suitable for diverse applications, including DC-DC converters and battery management systems.
Pinout
Key functions of the LM5143 include:
- Voltage Regulation: It regulates output voltage for high-efficiency buck converters.
- PWM Control: It uses a voltage-mode control architecture with adjustable frequency.
- Power Good Indicator: It provides a power good signal to indicate the output voltage is within the desired range.
- Compensation Network: Integrated features for output voltage compensation to optimize transient response.
- Enable/Disable Control: It includes pins for enabling or disabling the operation.
- Soft-Start Functionality: To minimize inrush current during startup.
For detailed configuration and pin functionalities, refer to the LM5143 datasheet provided by Texas Instruments.
Manufacturer
The LM5143RHAR specifically is a synchronous buck controller designed for power management applications. It is used in scenarios where efficient voltage regulation is crucial, such as in power supplies for computers and various electronic devices. Texas Instruments is known for its innovative technologies and commitment to quality, making it a significant player in the semiconductor industry.
Application
1. Telecommunications: Powering telecom infrastructure and networking equipment.
2. Industrial Automation: Supplying power for industrial control systems and robotics.
3. Computing: Providing voltage regulation for servers and high-performance computing systems.
4. Consumer Electronics: Used in devices requiring efficient power management.
5. Automotive: Powering electronic control units (ECUs) and other automotive applications.
6. LED Drivers: Efficiently driving LED lighting solutions.
Its versatility and efficiency make it ideal for multiple power management scenarios across these sectors.