Overview
The TPS7A2028PDQNRM3, part of the TPS7A20 series from Texas Instruments, is an ultra-small, low-dropout (LDO) linear regulator designed to provide high performance and low noise for sensitive analog circuits. This regulator can source up to 300mA of output current and is optimized for applications requiring low noise, high power supply rejection ratio (PSRR), and excellent load and line transient performance.
The device features an input voltage range of 1.6V to 6.0V and an output voltage range of 0.8V to 5.5V, making it versatile for a wide range of applications. It includes innovative design techniques to achieve ultra-low noise performance without the need for a noise bypass capacitor. Additionally, the TPS7A20 has a very low quiescent current of 6.5µA, making it ideal for battery-powered devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | 300 | mA |
| Input Voltage Range | 1.6 to 6.0 | V |
| Output Voltage Range | 0.8 to 5.5 | V |
| Output Voltage Tolerance | ±1.5% | - |
| Dropout Voltage (max at 300mA) | 140 mV (VOUT = 3.3V), 145 mV (VOUT = 3.3V, DBV) | mV |
| Output Noise (RMS) | 7 µV | µV |
| PSRR at 1kHz | 95 dB | dB |
| Quiescent Current | 6.5 µA | µA |
| Operating Temperature Range | -40 to 125 | °C |
| Package Options | X2SON (DQN), DSBGA (YCK/YCJ), SOT23-5 (DBV) | - |
Key Features
- Ultra-low output voltage noise: 7µVRMS without the need for a noise bypass capacitor.
- High PSRR: 95dB at 1kHz.
- Very low quiescent current: 6.5µA.
- Low dropout voltage: 140mV (max) at 300mA (VOUT = 3.3V), 145mV (max) at 300mA (VOUT = 3.3V, DBV).
- Low inrush current and internal soft-start to minimize input voltage drop during startup.
- Smart enable input circuit with an internally controlled pulldown resistor to keep the LDO disabled when the EN pin is floating.
- Stable with a minimum 1µF ceramic output capacitor.
- Ultra-small package options: X2SON (DQN), DSBGA (YCK/YCJ), SOT23-5 (DBV).
Applications
The TPS7A2028PDQNRM3 is suitable for a variety of applications requiring low noise and high PSRR, including:
- RF and sensitive analog circuits.
- Battery-powered devices due to its low quiescent current.
- Portable electronics and handheld devices.
- Medical devices requiring precise voltage regulation.
- Industrial control systems and automation.
Q & A
- What is the maximum output current of the TPS7A2028PDQNRM3?
The maximum output current is 300mA.
- What is the input voltage range of the TPS7A2028PDQNRM3?
The input voltage range is from 1.6V to 6.0V.
- What is the output voltage range of the TPS7A2028PDQNRM3?
The output voltage range is from 0.8V to 5.5V.
- What is the output voltage noise of the TPS7A2028PDQNRM3?
The output voltage noise is 7µVRMS.
- Does the TPS7A2028PDQNRM3 require a noise bypass capacitor?
No, it does not require a noise bypass capacitor.
- What is the PSRR of the TPS7A2028PDQNRM3 at 1kHz?
The PSRR is 95dB at 1kHz.
- What is the quiescent current of the TPS7A2028PDQNRM3?
The quiescent current is 6.5µA.
- What are the package options available for the TPS7A2028PDQNRM3?
The package options include X2SON (DQN), DSBGA (YCK/YCJ), and SOT23-5 (DBV).
- How does the smart enable feature work on the TPS7A2028PDQNRM3?
The smart enable feature includes an internally controlled pulldown resistor that keeps the LDO disabled when the EN pin is floating.
- What is the minimum output capacitor required for stability?
The minimum output capacitor required is 1µF ceramic capacitor.
