LMR51420YFDDCR

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LMR51420YFDDCR

IC REG BUCK ADJ 2A SOT23

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Spécifications

Series SIMPLE SWITCHER®
Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 4.5V
Voltage - Input (Max) 36V
Voltage - Output (Min/Fixed) 0.6V
Voltage - Output (Max) 34.2V
Current - Output 2A
Frequency - Switching 1.1MHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 150°C (TJ)
Mounting Type Surface Mount
Package / Case SOT-23-6 Thin, TSOT-23-6
Supplier Device Package SOT-23-THIN
Base Product Number LMR51420

Vue d'ensemble

Description

The LMR51420YFDDCR is a high-performance DC-DC step-down (buck) regulator designed for efficient power conversion in various applications. It features a wide input voltage range, typically from 4.5V to 60V, making it suitable for industrial, automotive, and battery-operated devices. The device can deliver an output current of up to 3A with an adjustable output voltage, which can be set down to as low as 0.8V.
Key features include a high switching frequency, which allows for smaller external components and a compact design, along with built-in protections such as thermal shutdown, overcurrent protection, and under-voltage lockout. The LMR51420YFDDCR also supports various modes of operation, including pulse-width modulation (PWM) and pulse-frequency modulation (PFM), enhancing its efficiency across different loads.
Its small footprint and robust performance make it an ideal choice for power supply designs in telecommunications, automotive, and consumer electronics, where size, efficiency, and reliability are critical.

Features

The LMR51420YFDDCR is a step-down voltage regulator from Texas Instruments designed for applications requiring high efficiency and compact designs. Key features include:
1. Input Voltage Range: Supports input voltages from 4.5V to 17V, making it suitable for a variety of power sources.
2. Output Voltage: Adjustable output voltage from 0.8V to 12V, allowing flexibility for different applications.
3. Output Current: Capable of delivering up to 2A of continuous output current.
4. High Efficiency: Achieves efficiencies up to 95%, helping to reduce heat and improve overall system efficiency.
5. Switching Frequency: Operates at a fixed frequency of 1.2 MHz, which allows for smaller external components.
6. Integrated Features: Includes internal compensation, soft start, and current limit protection for robust performance.
7. Thermal Management: Features thermal shutdown and power-good indicators to ensure safe operation.
This device is ideal for powering microcontrollers, sensors, and various portable devices.

Package

The LMR51420YFDDCR is packaged in a 16-pin TSSOP (Thin Shrink Small Outline Package) with a thermal pad for improved heat dissipation.

Pinout

The LMR51420YFDDCR is a step-down voltage regulator from Texas Instruments. It comes in a 16-pin HTQFN package. The pin count is 16.
Pin Functions:
1. SW (Pins 1, 2): Switch node connection for the internal FETs.
2. GND (Pin 3): Ground reference.
3. COMP (Pin 4): Compensation for stability and transient response.
4. CSN (Pin 5) and CSP (Pin 6): Current sense pins for overcurrent protection.
5. FB (Pin 7): Feedback voltage input for regulation feedback.
6. REN (Pin 8): Enable pin for the device.
7. VCC (Pin 9): Supply voltage for internal circuits.
8. RT (Pin 10): Timing resistor for frequency setting.
9. VOUT (Pin 11): Output voltage.
10. VIN (Pin 12): Input voltage.
11. PGND (Pin 13): Power ground connection.
12. RAMP (Pin 14): Ramp generator for PWM control.
13. SS (Pin 15): Soft-start for controller.
14. NC (Pin 16): No connection.
This device is designed for efficient DC-DC conversion applications.

Manufacturer

The LMR51420YFDDCR is manufactured by Texas Instruments (TI), a renowned global semiconductor company. Texas Instruments specializes in designing and manufacturing a wide range of analog and embedded processing products. The company is well-known for its innovations in various sectors, including automotive, industrial, communication, and consumer electronics. Founded in 1930, TI has established itself as a leader in semiconductor technology, providing solutions for power management, data converters, amplifiers, microcontrollers, and digital signal processors. With a strong focus on research and development, Texas Instruments continues to drive advancements in electronic design and manufacturing.

Application

The LMR51420YFDDCR is a step-down voltage regulator suitable for various applications, including desktop computers, point-of-load power supplies, LED drivers, industrial equipment, and automotive systems. It efficiently converts higher input voltages to lower output voltages, ideal for powering microcontrollers, FPGAs, and other digital circuits. Its features include high efficiency, adjustable output voltage, and excellent transient response, making it suitable for both consumer and industrial applications.

Equivalent

The LMR51420YFDDCR is a step-down (buck) voltage regulator. Equivalent products include:
1. LMR51420 - Original part with similar specifications.
2. TPS563201 - Another buck converter with comparable features.
3. LM2596 - Popular alternative for lower voltage applications.
4. LM2675 - Offers similar performance for step-down regulation.
Always check specific datasheets for detailed specifications and compatibility.

Expédition

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Référence des frais d'expédition (DHL/FedEx):

DHL: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 2 à 5 jours ouvrables.

FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.

Courrier aérien enregistré: Le coût d'expédition est de 2 à 4 $ (0,1 kg), avec un délai de livraison estimé de 5 à 20 jours ouvrables.

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