Maxim Integrated
Kuva saattaa olla esitys.
Katso tuotteen tekniset tiedot.
MAX1740EUB+T
Näytä Yksityiskohdat DataSheets

MAX1740EUB+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: Low-Power, Step-Up DC-DC Converter
  • Package: 10-TDFN (3x3)
  • Essence: Efficient power conversion for portable devices
  • Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 3.3V to 5.5V
  • Maximum Output Current: 100mA
  • Switching Frequency: 1MHz
  • Efficiency: Up to 90%
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1740EUB+T has a 10-pin TDFN package with the following pin configuration:

  1. EN (Enable): Enable input pin for turning the device on/off.
  2. FB (Feedback): Feedback input pin for regulating the output voltage.
  3. LX (Switch Node): Switch node connection for the internal MOSFET switch.
  4. GND (Ground): Ground reference for the IC.
  5. SW (Switch): Connection to the inductor and diode for power conversion.
  6. PGND (Power Ground): Ground reference for the power stage.
  7. VOUT (Output Voltage): Output voltage pin.
  8. VIN (Input Voltage): Input voltage pin.
  9. SS/TR (Soft-Start/Tracking): Soft-start and tracking control pin.
  10. BST (Bootstrap): Bootstrap capacitor connection for driving the internal high-side MOSFET.

Functional Features

  • Low-power step-up DC-DC converter suitable for battery-powered applications.
  • High efficiency enables longer battery life.
  • Wide input voltage range allows compatibility with various power sources.
  • Adjustable output voltage provides flexibility for different device requirements.
  • Integrated soft-start and tracking functionality for controlled power-up sequences.

Advantages and Disadvantages

Advantages: - High efficiency results in extended battery life. - Compact package size enables space-saving designs. - Wide input voltage range enhances compatibility. - Adjustable output voltage provides versatility.

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

Working Principles

The MAX1740EUB+T is a step-up DC-DC converter that converts a low input voltage to a higher output voltage. It utilizes a high-frequency switching technique to efficiently transfer power from the input to the output. The internal control circuitry regulates the output voltage based on the feedback received from the FB pin. The enable pin (EN) allows the device to be turned on or off as required. Soft-start and tracking features ensure controlled power-up sequences, preventing excessive inrush currents.

Detailed Application Field Plans

The MAX1740EUB+T is commonly used in various portable electronic devices, including:

  1. Battery-powered IoT devices
  2. Wearable devices
  3. Portable medical equipment
  4. Handheld instruments
  5. Wireless communication devices

Its compact size, wide input voltage range, and adjustable output voltage make it suitable for these applications where efficient power conversion is crucial.

Detailed and Complete Alternative Models

  1. MAX1722EUB+T: Step-Up DC-DC Converter with higher maximum output current (200mA).
  2. MAX1750EUB+T: Step-Up DC-DC Converter with lower input voltage range (1.8V to 5.5V).
  3. MAX1771EUB+T: Step-Up/Step-Down DC-DC Converter with adjustable output voltage.

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

Word count: 450 words

Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät MAX1740EUB+T :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of MAX1740EUB+T in technical solutions:

  1. Q: What is the MAX1740EUB+T? A: The MAX1740EUB+T is a step-up DC-DC converter IC designed for low-power applications.

  2. Q: What is the input voltage range of the MAX1740EUB+T? A: The input voltage range of the MAX1740EUB+T is typically between 0.7V and 5.5V.

  3. Q: What is the output voltage range of the MAX1740EUB+T? A: The output voltage range of the MAX1740EUB+T can be set between 1.8V and 5.5V using external resistors.

  4. Q: What is the maximum output current of the MAX1740EUB+T? A: The maximum output current of the MAX1740EUB+T is 100mA.

  5. Q: Can the MAX1740EUB+T operate with a single-cell Li-ion battery? A: Yes, the MAX1740EUB+T can operate with a single-cell Li-ion battery as its input voltage falls within the specified range.

  6. Q: Does the MAX1740EUB+T have built-in overcurrent protection? A: No, the MAX1740EUB+T does not have built-in overcurrent protection. External circuitry may be required for overcurrent protection.

  7. Q: Is the MAX1740EUB+T suitable for low-power IoT devices? A: Yes, the MAX1740EUB+T is suitable for low-power IoT devices due to its low quiescent current and small form factor.

  8. Q: Can the MAX1740EUB+T be used in battery-powered applications? A: Yes, the MAX1740EUB+T is suitable for battery-powered applications as it can efficiently step up low input voltages to higher output voltages.

  9. Q: Does the MAX1740EUB+T require external components for operation? A: Yes, the MAX1740EUB+T requires external components such as inductors, capacitors, and resistors for proper operation.

  10. Q: What is the typical efficiency of the MAX1740EUB+T? A: The typical efficiency of the MAX1740EUB+T is around 85-90% depending on the input and output voltage levels.