LD2985BM47R
Product Overview
- Category: Integrated Circuit (IC)
- Use: Voltage Regulator
- Characteristics: Low Dropout, 2.8V Fixed Output Voltage
- Package: SOT-23
- Essence: LD2985BM47R is a voltage regulator IC designed to provide a stable output voltage of 2.8V with low dropout voltage.
- Packaging/Quantity: Available in tape and reel packaging, with 3000 units per reel.
Specifications
- Input Voltage Range: 2.5V to 16V
- Output Voltage: 2.8V ± 2%
- Dropout Voltage: 400mV @ 100mA
- Output Current: 150mA
- Quiescent Current: 75µA
- Operating Temperature Range: -40°C to +125°C
Pin Configuration
The LD2985BM47R has three pins:
- VIN - Input Voltage Pin
- GND - Ground Pin
- VOUT - Output Voltage Pin
Functional Features
- Low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
- Stable output voltage of 2.8V with a small deviation of ±2%.
- Low quiescent current consumption, making it suitable for battery-powered applications.
- Overcurrent and thermal protection features ensure safe operation under various conditions.
- Fast transient response enables quick stabilization of the output voltage.
Advantages and Disadvantages
Advantages
- Low dropout voltage allows for efficient regulation.
- Stable output voltage ensures reliable performance.
- Small package size (SOT-23) makes it suitable for space-constrained applications.
- Wide input voltage range provides flexibility in different power supply scenarios.
- Overcurrent and thermal protection enhance the safety of the system.
Disadvantages
- Limited output current capability (150mA) may not be sufficient for high-power applications.
- Fixed output voltage limits its versatility in applications requiring adjustable voltages.
Working Principles
The LD2985BM47R is a linear voltage regulator that utilizes a PNP pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage obtained from a voltage divider network connected to the output pin. The pass transistor adjusts its resistance to maintain a constant output voltage, compensating for changes in the input voltage and load conditions.
Detailed Application Field Plans
The LD2985BM47R is commonly used in various electronic devices and systems, including:
- Battery-powered portable devices such as smartphones, tablets, and digital cameras.
- Embedded systems and microcontroller-based projects.
- Automotive electronics, including infotainment systems and dashboard displays.
- Industrial control systems and automation equipment.
- Communication devices and networking equipment.
Detailed Alternative Models
There are several alternative models available that offer similar functionality to the LD2985BM47R. Some notable alternatives include:
- LM1117-2.8: Fixed 2.8V voltage regulator with higher output current capability.
- LP2985-2.8: Low dropout voltage regulator with adjustable output voltage.
- LT1763-2.8: High-performance 2.8V voltage regulator with low quiescent current.
These alternative models can be considered based on specific application requirements and desired features.
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技術ソリューションにおける LD2985BM47R の適用に関連する 10 件の一般的な質問と回答をリストします。
Sure! Here are 10 common questions and answers related to the application of LD2985BM47R in technical solutions:
Q: What is LD2985BM47R? A: LD2985BM47R is a low dropout voltage regulator IC that provides a fixed output voltage of 4.7V.
Q: What is the input voltage range for LD2985BM47R? A: The input voltage range for LD2985BM47R is typically between 2.5V and 16V.
Q: What is the maximum output current LD2985BM47R can handle? A: LD2985BM47R can handle a maximum output current of 150mA.
Q: Can LD2985BM47R be used in battery-powered applications? A: Yes, LD2985BM47R can be used in battery-powered applications as it has a low dropout voltage and low quiescent current.
Q: Is LD2985BM47R suitable for use in automotive electronics? A: Yes, LD2985BM47R is suitable for use in automotive electronics as it can withstand high temperatures and has built-in protection features.
Q: Does LD2985BM47R require any external components for operation? A: Yes, LD2985BM47R requires a minimum of two external capacitors for stability and proper operation.
Q: Can LD2985BM47R handle short-circuit conditions? A: Yes, LD2985BM47R has built-in current limiting and thermal shutdown protection, which allows it to handle short-circuit conditions.
Q: What is the typical dropout voltage of LD2985BM47R? A: The typical dropout voltage of LD2985BM47R is around 300mV at a 150mA load.
Q: Can LD2985BM47R be used in low-power applications? A: Yes, LD2985BM47R can be used in low-power applications as it has a low quiescent current of typically 50µA.
Q: Is LD2985BM47R available in different package options? A: Yes, LD2985BM47R is available in various package options, including SOT-23 and DFN, to suit different application requirements.
Please note that the answers provided here are general and may vary depending on the specific datasheet and manufacturer's specifications for LD2985BM47R.