LM5155QDSSRQ1

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LM5155QDSSRQ1

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IC POWER MANAGEMENT

  • HerstellerTexas Instruments

  • Herstellerteil #LM5155QDSSRQ1

  • Paket WSON-12

  • Auf Lager3289

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Spezifikationen

Attribut Wert
Package / Case Tape & Reel (TR),Cut Tape (CT)
Series Automotive, AEC-Q100
Part Status Active
Output Type Transistor Driver
Function Step-Up, Step-Up/Step-Down
Output Configuration Positive
Topology Boost, Flyback, SEPIC
Number of Outputs 1
Output Phases 1
Voltage - Supply (Vcc/Vdd) 2.97V ~ 45V
Frequency - Switching 100kHz ~ 2.2MHz
Duty Cycle(Max) 93%
Synchronous Rectifier No
Clock Sync Yes
Control Features Soft Start
Operating Temperature -40°C ~ 150°C (TJ)
Mounting Type Surface Mount, Wettable Flank

Übersicht

Description

The LM5155QDSSRQ1 is a highly efficient DC-DC boost controller manufactured by Texas Instruments. It is designed for applications requiring step-up voltage conversion with high power density and reliability. This synchronous boost controller supports a wide input voltage range, making it versatile for various power supply configurations. Key features include a low quiescent current for improved efficiency, programmable switching frequency, and internal compensation to simplify design. Additionally, it offers robust protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout to enhance system reliability. The LM5155QDSSRQ1 is suitable for use in automotive, industrial, and consumer electronics due to its AEC-Q100 qualification, ensuring high performance in demanding environments. Its small package size and high integration level make it ideal for space-constrained designs. Overall, the LM5155QDSSRQ1 provides a flexible and efficient solution for boosting applications, supporting both isolated and non-isolated configurations.

Equivalent

The LM5155QDSSRQ1 is a boost controller designed by Texas Instruments. Equivalent products from other manufacturers may include:
1. LT3757 from Analog Devices: A versatile boost controller with similar performance.
2. MIC38C42 from Microchip Technology: Provides similar boost capabilities.
3. NCP1402 from ON Semiconductor: Another alternative for boost applications.
These options may vary slightly in specifications, so ensure compatibility with your specific application requirements.

Features

The LM5155QDSSRQ1 is a versatile, wide-input voltage boost controller from Texas Instruments, designed for automotive and industrial applications. It supports both boost and SEPIC (Single-Ended Primary-Inductor Converter) configurations, offering flexibility in design. Key features include:
1. Wide Input Voltage Range: Operates from 3 V to 42 V, suitable for automotive battery systems and industrial power supplies.
2. Robust Performance: Offers high efficiency with low quiescent current, enhancing battery life in portable applications.
3. Adjustable Frequency: Switching frequency is adjustable from 100 kHz to 2.2 MHz, allowing designers to optimize for size and efficiency.
4. Integrated Protection: Features include overvoltage protection, cycle-by-cycle current limit, and thermal shutdown.
5. SYNC Pin: Allows synchronization to an external clock for noise-sensitive applications.
6. Spread Spectrum Frequency Modulation (SSFM): Reduces EMI emissions.
7. Compensation Pin: Provides flexibility for loop compensation, improving stability.
8. AEC-Q100 Qualified: Ensures reliability in automotive environments.
These features make the LM5155QDSSRQ1 suitable for a variety of applications, offering reliable and efficient power conversion solutions.

Pinout

The LM5155QDSSRQ1 is a versatile boost controller from Texas Instruments, designed for automotive and other applications. It comes in a 10-pin VSSOP (also known as MSOP) package. Here is a brief overview of the pin functions:
1. VIN: Input voltage supply.
2. EN/UVLO: Enable and undervoltage lockout.
3. COMP: Compensation for the control loop.
4. FB: Feedback input for regulating the output.
5. RT/SYNC: Sets the switching frequency or synchronizes to an external clock.
6. GND: Ground reference for the IC.
7. SW: Switch node connected to the external inductor and diode.
8. GATE: Drives the gate of an external MOSFET.
9. VCC: Internal LDO output to power the IC’s internal circuitry.
10. BIAS: Optional bias supply input for improved efficiency.
The LM5155QDSSRQ1 is known for its wide input voltage range, programmable switching frequency, and high-efficiency design, making it suitable for various DC-DC boost converter applications.

Manufacturer

The LM5155QDSSRQ1 is manufactured by Texas Instruments Incorporated (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components and integrated circuits. They are known for producing analog chips and embedded processors, which are widely used in various applications, including automotive, industrial, consumer electronics, and communications equipment. TI's product portfolio includes amplifiers, data converters, power management devices, sensors, and other essential components for electronic devices. The company emphasizes innovation and engineering excellence to provide solutions that enhance performance and efficiency in electronic systems.

Application

The LM5155QDSSRQ1 is a DC-DC boost controller designed for a variety of applications. It is commonly used in automotive systems for power supply regulation, particularly in start-stop systems and headlamp drivers. Additionally, it can be utilized in industrial and telecom power supplies where efficient voltage boosting is required. The controller is also suitable for battery-powered applications where maintaining a stable output voltage is critical. Its ability to handle wide input voltage ranges and provide high efficiency makes it versatile for numerous power management scenarios.

Package

The LM5155QDSSRQ1 is packaged in a WSON (Very Thin Small Outline No-lead) format. Specifically, it is an 8-pin WSON package, which is compact and suitable for space-constrained applications.

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