LM5146RGYR

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LM5146RGYR

IC REG CTRLR BUCK 20VQFN

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  • Fr. Teil #LM5146RGYR
  • Paket VQFN-20
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Spezifikationen

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
OutputType Transistor Driver
Function Step-Down
OutputConfiguration Positive
Topology Buck
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 5.5V ~ 100V
Frequency-Switching 100kHz ~ 1MHz
DutyCycle(Max) 99%
SynchronousRectifier Yes
ClockSync Yes
ControlFeatures Current Limit, Enable, Frequency Control, Phase Control, Power Good, Ramp, Soft Start
OperatingTemperature -40°C ~ 150°C (TJ)
MountingType Surface Mount, Wettable Flank
Package/Case 20-VFQFN Exposed Pad

Übersicht

Description

The LM5146RGYR is a synchronous buck controller from Texas Instruments, designed for step-down (buck) voltage conversion applications. It offers high efficiency and reliability for powering a wide range of applications, including industrial, automotive, and telecommunications systems. The controller is capable of operating from a wide input voltage range, typically from 3.8V to 65V, making it versatile for various power supply designs.
Key features of the LM5146RGYR include its ability to drive external N-channel MOSFETs, allowing for flexible design choices and optimization of power dissipation. It also includes programmable switching frequency, which can be adjusted to optimize efficiency and minimize electromagnetic interference (EMI). The device is equipped with features like adjustable soft start, cycle-by-cycle current limiting, and output voltage tracking.
The LM5146RGYR is part of the larger LM5146 family, which offers different packaging options and additional functionalities to suit specific design requirements. Overall, the LM5146RGYR is a robust solution for designers looking to implement efficient and reliable DC-DC conversion in their power management systems.

Features

The LM5146RGYR is a high-performance, synchronous buck controller designed for step-down voltage regulation. Key features include:
1. Wide Input Voltage Range: Supports 3.8V to 65V, making it suitable for various applications.
2. High Efficiency: Offers efficiency through synchronous rectification and low quiescent current.
3. Programmable Frequency: Allows switching frequency adjustment from 100 kHz to 1 MHz.
4. Fast Transient Response: Uses constant-on-time control for quick reaction to load changes.
5. Integrated Drivers: Includes high-side and low-side MOSFET drivers for simplified design.
6. Current Sensing: Supports both inductor DCR and resistor sensing for flexible current measurement.
7. Protection Features: Offers overcurrent, overvoltage, and thermal shutdown protections.
8. Adjustable Soft Start: Provides controlled output voltage ramp-up to prevent inrush current.
9. Synchronization Capability: Can be synchronized to an external clock for improved noise performance.
10. Power Good Indicator: Signals when the output is within the desired range.
These features make the LM5146RGYR highly adaptable for industrial, automotive, and communications applications requiring efficient and reliable power conversion.

Package

The LM5146RGYR is a buck controller from Texas Instruments, and it comes in a VQFN (Very Thin Quad Flat No-Lead) package. Specifically, it is a 24-pin VQFN package, which provides good thermal performance and efficient packaging for space-constrained applications.

Pinout

The LM5146RGYR is a 42-pin device. It is a synchronous buck controller designed for high-performance, high-reliability applications. The primary function of the LM5146RGYR is to efficiently step down high input voltages to lower output voltages, suitable for powering various electronic components and systems. It supports a wide input voltage range, typically from 3.8 V to 65 V, and provides features such as adjustable switching frequency, programmable soft start, and external clock synchronization. It also includes protections like undervoltage lockout, overvoltage protection, and thermal shutdown. The high pin count allows for numerous features and configurations, including multiple feedback paths and control pins, enabling precise regulation and control of the output voltage and current.

Manufacturer

The LM5146RGYR is manufactured by Texas Instruments, a global technology company. Texas Instruments, commonly known as TI, specializes in the design and production of semiconductors and various integrated circuits, which are widely used in electronics and electrical components. Their products serve a broad range of applications, including industrial, automotive, personal electronics, and communications equipment. TI is recognized for its innovation and influence in the technology industry, particularly in areas such as analog chips and embedded processors.

Application

The LM5146RGYR is a synchronous buck controller designed for step-down DC-DC conversion. Its application areas include telecommunications, industrial power systems, automotive power supplies, and any application requiring efficient conversion from higher voltage levels (up to 75V) to lower voltages. It is well-suited for use in systems that demand high power density and efficiency, such as distributed power architectures and high-current point-of-load converters.

Equivalent

The LM5146RGYR is a synchronous buck controller from Texas Instruments. Equivalent products from other manufacturers include:
1. LT8705 by Analog Devices: A similar DC/DC controller with wide input voltage range.
2. MAX15062 by Maxim Integrated: Offers similar functionality in a compact form.
3. MIC2107 by Microchip Technology: Another synchronous buck controller for similar applications.
4. NCP81276 by ON Semiconductor: Provides similar buck conversion capabilities.
Ensure to check specific electrical parameters to match your design requirements.

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