Overview
The TPS70950DBVR is a part of the TPS709 series of linear voltage regulators produced by Texas Instruments. These regulators are designed to be ultra-low quiescent current, low-dropout (LDO) devices, making them suitable for power-sensitive applications. The TPS70950DBVR specifically provides a fixed 5V output voltage and can handle input voltages up to 30V, with a maximum output current of 150mA.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Output Voltage (VOUT) | 5V | Fixed |
| Input Voltage (VIN) | Up to 30V | |
| Output Current (IOUT) | Up to 150mA | |
| Quiescent Current (IQ) | 1.3 - 2.05 µA (IOUT = 0 mA, VOUT ≤ 3.3 V) 1.4 - 2.25 µA (IOUT = 0 mA, VOUT > 3.3 V) | |
| Dropout Voltage (VDO) | 245 - 500 mV (IOUT = 50 mA) 690 - 1200 mV (IOUT = 150 mA) | |
| Line Regulation | ≤ 10 mV (VIN = VOUT(typ) + 1.5 V or 3 V, 100 µA ≤ IOUT ≤ 150 mA) | |
| Load Regulation | ≤ 20 mV (VIN = VOUT(typ) + 1.5 V or 3 V, 100 µA ≤ IOUT ≤ 150 mA) | |
| Power-Supply Rejection Ratio (PSRR) | 80 dB (f = 10 Hz) 62 dB (f = 100 Hz) 52 dB (f = 1 kHz) | |
| Output Noise Voltage | 190 μVRMS (BW = 10 Hz to 100 kHz, IOUT = 10 mA, VIN = 2.7 V, VOUT = 1.2 V) | |
| Start-up Time | 200 - 600 µs (VOUT(nom) ≤ 3.3 V) 500 - 1500 µs (VOUT(nom) > 3.3 V) | |
| Enable Pin Voltage | 0.9 V (High), 0 - 0.4 V (Low) | |
| Thermal Shutdown Temperature | Typically around 125°C |
Key Features
- Ultra-Low Quiescent Current: The TPS70950DBVR has a very low quiescent current, making it ideal for battery-powered devices and other power-sensitive applications.
- Low Dropout Voltage: The regulator features a low dropout voltage, ensuring efficient operation even when the input voltage is close to the output voltage.
- Current Limit and Thermal Shutdown: The device includes internal current limit and thermal shutdown protection to prevent damage during fault conditions.
- Reverse Current Protection: It blocks any discharge current from the output into the input, enhancing reliability.
- Enable Pin: The regulator can be enabled or disabled using the enable pin, allowing for power management in various applications.
Applications
- Battery-Powered Devices: The ultra-low quiescent current makes it suitable for devices powered by batteries, such as portable electronics and IoT devices.
- Industrial Control Systems: Its robust features and reliability make it a good choice for industrial control systems and automation.
- Medical Devices: The low noise and high PSRR make it suitable for medical devices that require stable and clean power supply.
- Aerospace and Defense: The device's ability to operate over a wide temperature range and its reliability features make it a candidate for aerospace and defense applications.
Q & A
- What is the maximum output current of the TPS70950DBVR?
The maximum output current is 150mA. - What is the input voltage range for the TPS70950DBVR?
The input voltage range is up to 30V. - What is the quiescent current of the TPS70950DBVR?
The quiescent current is between 1.3 - 2.05 µA (IOUT = 0 mA, VOUT ≤ 3.3 V) and 1.4 - 2.25 µA (IOUT = 0 mA, VOUT > 3.3 V). - Does the TPS70950DBVR have thermal shutdown protection?
Yes, it includes thermal shutdown protection to prevent damage during fault conditions. - What is the dropout voltage of the TPS70950DBVR?
The dropout voltage is between 245 - 500 mV (IOUT = 50 mA) and 690 - 1200 mV (IOUT = 150 mA). - How does the enable pin function on the TPS70950DBVR?
The enable pin allows the device to be enabled (0.9 V) or disabled (0 - 0.4 V). - What is the power-supply rejection ratio (PSRR) of the TPS70950DBVR?
The PSRR is 80 dB at 10 Hz, 62 dB at 100 Hz, and 52 dB at 1 kHz. - What is the output noise voltage of the TPS70950DBVR?
The output noise voltage is 190 μVRMS (BW = 10 Hz to 100 kHz, IOUT = 10 mA, VIN = 2.7 V, VOUT = 1.2 V). - Does the TPS70950DBVR have reverse current protection?
Yes, it includes reverse current protection to block any discharge current from the output into the input. - What is the typical start-up time for the TPS70950DBVR?
The start-up time is between 200 - 600 µs (VOUT(nom) ≤ 3.3 V) and 500 - 1500 µs (VOUT(nom) > 3.3 V).
