LP3905SDX-A3
Product Overview
Category
The LP3905SDX-A3 belongs to the category of voltage regulators.
Use
It is used to regulate voltage in electronic devices, ensuring stable and reliable power supply.
Characteristics
- Input Voltage Range: 2.7V to 5.5V
- Output Voltage Range: 0.8V to 3.3V
- Low Dropout Voltage: 200mV at 150mA
- Ultra-Low Noise: 30µVRMS (10Hz to 100kHz)
- Package: WSON-6 package
- Essence: Efficient voltage regulation for electronic devices
- Packaging/Quantity: Available in reels with a quantity of 3000 units per reel
Specifications
- Input Voltage Range: 2.7V to 5.5V
- Output Voltage Range: 0.8V to 3.3V
- Dropout Voltage: 200mV at 150mA
- Noise: 30µVRMS (10Hz to 100kHz)
- Package: WSON-6
- Operating Temperature Range: -40°C to 125°C
Detailed Pin Configuration
- VIN: Input Voltage
- GND: Ground
- EN: Enable
- NC: No Connection
- VOUT: Output Voltage
- PG: Power Good Indicator
Functional Features
- Low dropout voltage
- Ultra-low noise
- Power good indicator
- Thermal shutdown protection
- Short-circuit protection
Advantages and Disadvantages
Advantages
- Wide input voltage range
- Low dropout voltage
- Ultra-low noise
- Small package size
Disadvantages
- Limited output current capacity
- Higher cost compared to traditional linear regulators
Working Principles
The LP3905SDX-A3 utilizes a feedback control loop to maintain a stable output voltage despite variations in the input voltage and load conditions. It employs internal circuitry to provide protection features such as thermal shutdown and short-circuit protection.
Detailed Application Field Plans
The LP3905SDX-A3 is suitable for various portable and battery-powered applications, including smartphones, tablets, portable media players, and handheld gaming devices. Its low dropout voltage and ultra-low noise make it ideal for powering sensitive analog and digital circuits in these devices.
Detailed and Complete Alternative Models
- LP5907: Similar voltage regulator with higher output current capability
- LM2937: Linear voltage regulator with comparable specifications
- TPS799: Low-dropout regulator with different package options
This comprehensive entry provides an in-depth understanding of the LP3905SDX-A3, covering its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.
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技術ソリューションにおける LP3905SDX-A3 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。
What is the LP3905SDX-A3?
- The LP3905SDX-A3 is a high-efficiency, multi-channel step-down converter designed for applications in portable devices such as smartphones and tablets.
What is the input voltage range of the LP3905SDX-A3?
- The input voltage range of the LP3905SDX-A3 is typically 2.7V to 5.5V.
What are the output channels of the LP3905SDX-A3?
- The LP3905SDX-A3 has three synchronous buck converters with integrated FETs, providing multiple output channels.
What is the maximum output current of each channel?
- Each channel of the LP3905SDX-A3 can deliver up to 800mA of output current.
What is the switching frequency of the LP3905SDX-A3?
- The LP3905SDX-A3 operates at a fixed frequency of 3MHz, which helps minimize the size of external components.
Does the LP3905SDX-A3 have built-in protection features?
- Yes, the LP3905SDX-A3 includes overcurrent protection, thermal shutdown, and undervoltage lockout to ensure safe operation.
Can the LP3905SDX-A3 be used in battery-powered applications?
- Yes, the LP3905SDX-A3 is well-suited for battery-powered applications due to its high efficiency and low quiescent current.
What control interfaces does the LP3905SDX-A3 support?
- The LP3905SDX-A3 supports both I2C and SPI control interfaces, offering flexibility in system integration.
Is the LP3905SDX-A3 suitable for space-constrained designs?
- Yes, the LP3905SDX-A3 comes in a compact package and requires minimal external components, making it suitable for space-constrained designs.
What are some typical applications of the LP3905SDX-A3?
- Typical applications of the LP3905SDX-A3 include powering the core, memory, and I/O voltages in portable electronic devices, as well as other power management solutions in consumer electronics.