Maxim Integrated
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MAX6845UKD3+T
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MAX6845UKD3+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Low-dropout, adjustable output voltage
  • Package: SOT-23-3
  • Essence: Regulates input voltage to a desired output voltage level
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Input Voltage Range: 2.5V to 6.5V
  • Output Voltage Range: 1.25V to 5.5V
  • Dropout Voltage: 150mV at 100mA load current
  • Output Current: Up to 250mA
  • Quiescent Current: 40µA (typical)

Detailed Pin Configuration

The MAX6845UKD3+T has three pins arranged as follows:

  1. Pin 1: GND (Ground) - Connected to the ground reference of the circuit.
  2. Pin 2: VOUT (Output Voltage) - Provides the regulated output voltage.
  3. Pin 3: VIN (Input Voltage) - Receives the unregulated input voltage.

Functional Features

  • Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
  • Adjustable output voltage allows for flexibility in various applications.
  • Low quiescent current minimizes power consumption during standby or idle periods.
  • Thermal shutdown protection prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Wide input voltage range enables compatibility with different power sources. - Small package size (SOT-23-3) facilitates space-constrained designs. - Low dropout voltage enhances efficiency and performance. - Adjustable output voltage provides versatility.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Requires external components for stability and filtering.

Working Principles

The MAX6845UKD3+T is a voltage regulator IC that operates by comparing the input voltage (VIN) with a reference voltage. It adjusts the output voltage (VOUT) to maintain a stable level, regardless of variations in the input voltage or load conditions. The dropout voltage is minimized to ensure efficient regulation, even when the input voltage is close to the desired output voltage.

Detailed Application Field Plans

The MAX6845UKD3+T finds applications in various fields, including:

  1. Battery-Powered Devices: Provides regulated power supply for portable electronics, such as smartphones, tablets, and wearable devices.
  2. IoT Devices: Ensures stable voltage for sensors, microcontrollers, and communication modules in Internet of Things (IoT) applications.
  3. Automotive Electronics: Regulates voltage for automotive systems, including infotainment systems, lighting controls, and engine management units.
  4. Industrial Control Systems: Maintains consistent power supply for PLCs (Programmable Logic Controllers), motor drives, and control panels in industrial automation.

Detailed and Complete Alternative Models

  1. LM1117-ADJ: Adjustable voltage regulator with similar specifications and package type.
  2. LT1763-3.3: Low-dropout, fixed output voltage regulator suitable for 3.3V applications.
  3. TPS79633: Ultra-low dropout voltage regulator with fixed 3.3V output voltage.
  4. MCP1700-3302E: Low quiescent current, fixed 3.3V voltage regulator.

(Note: This list is not exhaustive and other alternative models may exist.)

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MAX6845UKD3+T v technických řešeních

Sure! Here are 10 common questions and answers related to the application of MAX6845UKD3+T in technical solutions:

  1. Q: What is the MAX6845UKD3+T? A: The MAX6845UKD3+T is a voltage monitor and reset circuit that provides power supply monitoring and reset generation for microcontrollers, DSPs, and other digital systems.

  2. Q: What is the operating voltage range of MAX6845UKD3+T? A: The operating voltage range of MAX6845UKD3+T is typically between 1.6V and 5.5V.

  3. Q: How does MAX6845UKD3+T monitor the power supply? A: MAX6845UKD3+T monitors the power supply by comparing the input voltage with a fixed threshold voltage. It generates a reset signal when the input voltage falls below the threshold.

  4. Q: Can I adjust the threshold voltage of MAX6845UKD3+T? A: No, the threshold voltage of MAX6845UKD3+T is fixed and cannot be adjusted.

  5. Q: What is the typical reset timeout period of MAX6845UKD3+T? A: The typical reset timeout period of MAX6845UKD3+T is 140ms.

  6. Q: Does MAX6845UKD3+T have an open-drain output? A: Yes, MAX6845UKD3+T has an open-drain reset output that can be pulled low during a reset condition.

  7. Q: Can I use MAX6845UKD3+T with both active-high and active-low reset inputs? A: Yes, MAX6845UKD3+T supports both active-high and active-low reset inputs.

  8. Q: What is the maximum supply current of MAX6845UKD3+T? A: The maximum supply current of MAX6845UKD3+T is typically 10µA.

  9. Q: Can I use MAX6845UKD3+T in battery-powered applications? A: Yes, MAX6845UKD3+T is suitable for battery-powered applications due to its low supply current and wide operating voltage range.

  10. Q: Does MAX6845UKD3+T have any built-in hysteresis? A: Yes, MAX6845UKD3+T has a built-in hysteresis of typically 50mV to prevent false triggering during power supply fluctuations.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements.