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MAX1840EUB
Product Overview
- Category: Integrated Circuit (IC)
- Use: Power Management
- Characteristics: Low-power, high-efficiency step-up DC-DC converter
- Package: µMAX® (8-pin microMAX)
- Essence: Voltage Boosting
- Packaging/Quantity: Tube/100 pieces
Specifications
- Input Voltage Range: 1.8V to 5.5V
- Output Voltage Range: 2.7V to 5.5V
- Maximum Output Current: 200mA
- Switching Frequency: 1MHz
- Shutdown Current: <1µA
- Operating Temperature Range: -40°C to +85°C
Detailed Pin Configuration
The MAX1840EUB has the following pin configuration:
- SHDN (Shutdown): Active-low shutdown input.
- LX (Switch Node): Switching node connection for the internal MOSFET.
- FB (Feedback): Feedback voltage input for regulating the output voltage.
- GND (Ground): Ground reference for the IC.
- VOUT (Output Voltage): Regulated output voltage.
- VIN (Input Voltage): Input voltage supply.
- C1 (Input Capacitor): Connects to the input voltage supply.
- C2 (Output Capacitor): Connects to the output voltage.
Functional Features
- High efficiency up to 96%
- Low quiescent current
- Internal synchronous rectifier
- Soft-start function
- Overcurrent and thermal protection
- Adjustable output voltage
Advantages and Disadvantages
Advantages: - High efficiency leads to longer battery life - Low quiescent current reduces power consumption - Small package size allows for space-saving designs - Wide input and output voltage range provides flexibility
Disadvantages: - Limited maximum output current of 200mA - Requires external capacitors for proper operation
Working Principles
The MAX1840EUB is a step-up DC-DC converter that boosts the input voltage to a higher output voltage. It utilizes an internal synchronous rectifier and operates at a high switching frequency of 1MHz. The feedback voltage (FB) is used to regulate the output voltage, which can be adjusted according to the application requirements. The soft-start function ensures a controlled startup, while the overcurrent and thermal protection features safeguard the IC from damage.
Detailed Application Field Plans
The MAX1840EUB is commonly used in various applications, including:
- Battery-powered devices: Portable electronics, handheld instruments, and wireless communication devices.
- IoT (Internet of Things): Sensor nodes, smart home devices, and wearable technology.
- Automotive: Automotive electronics, infotainment systems, and lighting controls.
- Industrial: Industrial automation, control systems, and power management modules.
Detailed and Complete Alternative Models
- MAX1841EUB: Similar to MAX1840EUB but with a higher maximum output current of 300mA.
- MAX1842EUB: Step-up DC-DC converter with adjustable output voltage and higher efficiency.
- MAX1843EUB: Low-power, high-efficiency step-up DC-DC converter with integrated power switch.
These alternative models offer similar functionality and can be considered based on specific application requirements.
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Liệt kê 10 câu hỏi và câu trả lời thường gặp liên quan đến ứng dụng MAX1840EUB trong giải pháp kỹ thuật
Sure! Here are 10 common questions and answers related to the application of MAX1840EUB in technical solutions:
Q: What is the MAX1840EUB? A: The MAX1840EUB is a low-power, high-voltage linear regulator designed for use in various technical applications.
Q: What is the input voltage range of the MAX1840EUB? A: The input voltage range of the MAX1840EUB is typically between 4V and 28V.
Q: What is the output voltage range of the MAX1840EUB? A: The output voltage range of the MAX1840EUB can be adjusted from 1.25V to 26V using external resistors.
Q: What is the maximum output current of the MAX1840EUB? A: The maximum output current of the MAX1840EUB is 100mA.
Q: Is the MAX1840EUB suitable for battery-powered applications? A: Yes, the MAX1840EUB is designed to operate with low quiescent current, making it suitable for battery-powered applications.
Q: Does the MAX1840EUB have built-in thermal shutdown protection? A: Yes, the MAX1840EUB includes thermal shutdown protection to prevent overheating.
Q: Can the MAX1840EUB handle input voltage transients? A: Yes, the MAX1840EUB is designed to handle input voltage transients up to 40V without damage.
Q: Does the MAX1840EUB require any external components for operation? A: Yes, the MAX1840EUB requires a few external components such as input/output capacitors and resistors for voltage adjustment.
Q: What is the operating temperature range of the MAX1840EUB? A: The MAX1840EUB can operate within a temperature range of -40°C to +85°C.
Q: Is the MAX1840EUB available in different package options? A: Yes, the MAX1840EUB is available in a 10-pin µMAX package and a 16-pin QSOP package for flexibility in different applications.
Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.