MAX4948ETG+T

Product Overview

Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: High Efficiency, Low Quiescent Current
Package: 24-pin TQFN
Essence: Voltage Regulator
Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

Input Voltage Range: 2.7V to 5.5V
Output Voltage Range: 0.6V to 3.6V
Maximum Output Current: 1A
Quiescent Current: 25µA
Switching Frequency: 1.2MHz
Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX4948ETG+T has a total of 24 pins, each serving a specific function. The pin configuration is as follows:

VIN: Input Voltage
EN: Enable Pin
FB: Feedback Pin
GND: Ground
PGND: Power Ground
SW: Switch Node
LX: Inductor Connection
VOUT: Output Voltage
SS/TR: Soft-Start/Tracking Pin
COMP: Compensation Pin
AGND: Analog Ground
NC: No Connection
NC: No Connection
NC: No Connection
NC: No Connection
NC: No Connection
NC: No Connection
NC: No Connection
NC: No Connection
NC: No Connection
NC: No Connection
NC: No Connection
NC: No Connection
NC: No Connection

Functional Features

The MAX4948ETG+T is a high-efficiency voltage regulator designed for power management applications. It offers the following functional features:

Wide input voltage range, allowing operation from various power sources.
Low quiescent current, minimizing power consumption in standby mode.
High output current capability, providing sufficient power for demanding loads.
Adjustable output voltage, allowing flexibility in system design.
Integrated soft-start and tracking functions, ensuring smooth startup and shutdown operations.
Overcurrent and thermal protection, safeguarding the regulator and connected components.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power dissipation and longer battery life. - Wide input voltage range enables compatibility with different power sources. - Compact package size saves board space. - Integrated protection features enhance system reliability.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - Higher cost compared to non-integrated voltage regulators. - Requires external components for proper operation.

Working Principles

The MAX4948ETG+T operates as a step-down (buck) voltage regulator. It converts a higher input voltage to a lower output voltage by controlling the duty cycle of an internal switch. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle to maintain a stable output. The soft-start and tracking functions ensure controlled startup and shutdown sequences. The regulator also incorporates overcurrent and thermal protection mechanisms to prevent damage to the device and connected components.

Detailed Application Field Plans

The MAX4948ETG+T is commonly used in various power management applications, including but not limited to:

Battery-powered devices: Portable electronics, handheld instruments, and wireless communication devices benefit from its low quiescent current and high efficiency.
Industrial automation: Control systems, motor drives, and sensors can utilize the regulator's wide input voltage range and robust protection features.
Automotive electronics: Infotainment systems, lighting modules, and advanced driver-assistance systems (ADAS) can benefit from its compact size and reliable performance.
IoT devices: Smart home devices, wearables, and connected sensors can leverage its small form factor and low power consumption.

Detailed and Complete Alternative Models

LM2596S-ADJ: A popular alternative with similar specifications and functionality.
LT1763-3.3: Offers a fixed 3.3V output voltage and lower quiescent current.
TPS54331-Q1: Automotive-grade alternative with enhanced protection features.
ADP2302ARDZ-5.0: Provides a fixed 5.0V output voltage and higher maximum output current.

These alternative models offer different features and specifications, allowing designers to choose the most suitable option for their specific application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MAX4948ETG+T v technických řešeních

Sure! Here are 10 common questions and answers related to the application of MAX4948ETG+T in technical solutions:

Q: What is the MAX4948ETG+T? A: The MAX4948ETG+T is a high-speed, low-power, quad differential line receiver designed for RS-485/RS-422 communication.
Q: What is the operating voltage range of MAX4948ETG+T? A: The operating voltage range of MAX4948ETG+T is from 3V to 5.5V.
Q: What is the maximum data rate supported by MAX4948ETG+T? A: The maximum data rate supported by MAX4948ETG+T is 20Mbps.
Q: Can MAX4948ETG+T be used in half-duplex communication? A: Yes, MAX4948ETG+T can be used in both half-duplex and full-duplex communication modes.
Q: Does MAX4948ETG+T have built-in ESD protection? A: Yes, MAX4948ETG+T has ±15kV ESD protection on the RS-485/RS-422 inputs.
Q: What is the typical supply current of MAX4948ETG+T? A: The typical supply current of MAX4948ETG+T is 1.7mA.
Q: Can MAX4948ETG+T operate in harsh industrial environments? A: Yes, MAX4948ETG+T is designed to operate in harsh industrial environments with extended temperature range (-40°C to +125°C).
Q: Does MAX4948ETG+T support fail-safe biasing? A: Yes, MAX4948ETG+T supports fail-safe biasing to ensure a known output state when the inputs are open or shorted.
Q: Can MAX4948ETG+T be used in multi-drop RS-485 networks? A: Yes, MAX4948ETG+T can be used in multi-drop RS-485 networks with up to 32 nodes.
Q: What package does MAX4948ETG+T come in? A: MAX4948ETG+T is available in a 24-pin TQFN package.

Please note that these answers are based on general information and it's always recommended to refer to the datasheet and application notes for specific details and guidelines.