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規格
| 屬性 | 價值 |
| Manufacturer | LOWPOWER |
| Package | SOT-23-5 |
| Operating Temperature | -40℃~+125℃@(Tj) |
| Voltage - Supply | 5.5V |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Output Current | 300mA |
| Voltage Dropout | 220mV@(300mA) |
| Power Supply Rejection Ratio (PSRR) | 76dB@(1kHz) |
| Features | Overcurrent Protection |
| Output Voltage | 3.3V |
| Output Configuration | Positive electrode |
概述
Description
The LP3992-33B5F is a low-dropout (LDO) voltage regulator from Texas Instruments, designed for high-performance applications. It provides a fixed 3.3V output with a 500mA current capacity and features ultra-low noise (typically 30µVRMS), making it ideal for sensitive analog and RF circuits.
Key specifications:
- Input voltage range: 2.5V to 6.5V
- Low dropout voltage: 200mV (typical at 500mA)
- High PSRR: 75dB at 1kHz
- Thermal shutdown & current limit protection
Its small SOT-23-5 package suits space-constrained designs, such as portable devices, medical equipment, and IoT modules. The LP3992-33B5F ensures stable, clean power with minimal external components.
For detailed specs, refer to the [TI datasheet](https://www.ti.com/product/LP3992).
Key specifications:
- Input voltage range: 2.5V to 6.5V
- Low dropout voltage: 200mV (typical at 500mA)
- High PSRR: 75dB at 1kHz
- Thermal shutdown & current limit protection
Its small SOT-23-5 package suits space-constrained designs, such as portable devices, medical equipment, and IoT modules. The LP3992-33B5F ensures stable, clean power with minimal external components.
For detailed specs, refer to the [TI datasheet](https://www.ti.com/product/LP3992).
Features
The LP3992-33B5F is a low-dropout (LDO) voltage regulator with the following key features:
- Output Voltage: Fixed 3.3V
- Input Voltage Range: 2.5V to 6.5V
- Output Current: Up to 300mA
- Low Dropout Voltage: 120mV (typical) at 100mA
- Low Quiescent Current: 75µA (typical)
- High PSRR: 70dB at 1kHz
- Thermal & Overcurrent Protection: Yes
- Package: SOT-23-5
- Low Noise: Optimized for sensitive applications
Ideal for portable devices, IoT, and battery-powered systems requiring stable, efficient power.
- Output Voltage: Fixed 3.3V
- Input Voltage Range: 2.5V to 6.5V
- Output Current: Up to 300mA
- Low Dropout Voltage: 120mV (typical) at 100mA
- Low Quiescent Current: 75µA (typical)
- High PSRR: 70dB at 1kHz
- Thermal & Overcurrent Protection: Yes
- Package: SOT-23-5
- Low Noise: Optimized for sensitive applications
Ideal for portable devices, IoT, and battery-powered systems requiring stable, efficient power.
Pinout
The LP3992-33B5F is a 5-pin (SOT-23 package) ultra-low-noise LDO voltage regulator with the following pin functions:
1. VIN – Input voltage (2.5V to 7V).
2. GND – Ground.
3. EN – Enable pin (active high; tie to VIN for always-on).
4. BYP – Bypass capacitor connection for noise reduction.
5. VOUT – Fixed 3.3V output (up to 150mA).
It features low noise (30µVrms), high PSRR, and low dropout voltage, making it ideal for precision analog applications.
1. VIN – Input voltage (2.5V to 7V).
2. GND – Ground.
3. EN – Enable pin (active high; tie to VIN for always-on).
4. BYP – Bypass capacitor connection for noise reduction.
5. VOUT – Fixed 3.3V output (up to 150mA).
It features low noise (30µVrms), high PSRR, and low dropout voltage, making it ideal for precision analog applications.
Manufacturer
The LP3992-33B5F is a low-noise, low-dropout (LDO) voltage regulator manufactured by Texas Instruments (TI).
Texas Instruments is a leading global semiconductor company specializing in analog and embedded processing technologies. Founded in 1930 and headquartered in Dallas, Texas, TI designs and manufactures a wide range of ICs for industrial, automotive, consumer electronics, and communications applications. The company is known for its high-performance analog chips, power management solutions, and microcontrollers.
The LP3992-33B5F is part of TI's precision LDO family, offering stable voltage regulation with ultra-low noise, making it suitable for sensitive applications like medical devices and RF systems.
Texas Instruments is a leading global semiconductor company specializing in analog and embedded processing technologies. Founded in 1930 and headquartered in Dallas, Texas, TI designs and manufactures a wide range of ICs for industrial, automotive, consumer electronics, and communications applications. The company is known for its high-performance analog chips, power management solutions, and microcontrollers.
The LP3992-33B5F is part of TI's precision LDO family, offering stable voltage regulation with ultra-low noise, making it suitable for sensitive applications like medical devices and RF systems.
Application
The LP3992-33B5F is a low-noise, low-dropout (LDO) voltage regulator designed for precision applications. Key application areas include:
1. Portable Electronics – Powering sensitive components in smartphones, tablets, and wearables.
2. Medical Devices – Ensuring stable voltage for diagnostic equipment and implantable devices.
3. Industrial Systems – Supporting sensors, data acquisition, and control systems.
4. Automotive Electronics – Providing reliable power for infotainment and ADAS modules.
5. IoT Devices – Maintaining consistent voltage for wireless modules and microcontrollers.
Its high PSRR and low noise make it ideal for noise-sensitive applications.
1. Portable Electronics – Powering sensitive components in smartphones, tablets, and wearables.
2. Medical Devices – Ensuring stable voltage for diagnostic equipment and implantable devices.
3. Industrial Systems – Supporting sensors, data acquisition, and control systems.
4. Automotive Electronics – Providing reliable power for infotainment and ADAS modules.
5. IoT Devices – Maintaining consistent voltage for wireless modules and microcontrollers.
Its high PSRR and low noise make it ideal for noise-sensitive applications.
Package
The LP3992-33B5F is a low-noise, low-dropout (LDO) voltage regulator in a 5-pin SOT-23 package. It provides a fixed 3.3V output with high accuracy and low quiescent current, suitable for portable and battery-powered applications. The SOT-23 package is compact, making it ideal for space-constrained designs.
