Overview
The TPS73225DBVR is a low-dropout linear voltage regulator produced by Texas Instruments. This regulator operates with an input voltage range of 1.7V to 5.5V and can source up to 250mA of load current. It features an NMOS pass transistor and an integrated 4MHz charge pump, which provides a dropout voltage of less than 150mV at full load current. The device is stable with or without an output capacitor, making it versatile for various applications. It also includes advanced noise reduction capabilities and protection features such as thermal shutdown and current limit protection.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 1.7 | - | 5.5 | V |
| Output Voltage | 1.2 | - | 5 | V |
| Output Current | - | - | 250 | mA |
| Dropout Voltage | - | 40 | 150 | mV |
| Output Noise (10kHz to 100kHz) | - | 30 | - | μVRMS |
| Accuracy (Line, Load, and Temperature) | -0.5 | - | 1 | % |
| Thermal Shutdown Temperature | - | - | 160 | °C |
| Operating Junction Temperature | -40 | - | 125 | °C |
| Shutdown Current | - | - | 1 | μA |
Key Features
- Stable operation with or without an output capacitor
- Ultra-low dropout voltage: 40mV typical at 250mA
- Excellent load transient response
- Low noise: 30μVRMS typical (10kHz to 100kHz)
- High accuracy: 0.5% initial accuracy, 1% overall accuracy (line, load, and temperature)
- Low shutdown current: less than 1μA
- Thermal shutdown and current limit protection
- Noise reduction capability with NR pin
- Available in fixed and adjustable output voltage versions
Applications
- Portable and battery-powered equipment
- Post-regulation for switching supplies
- Noise-sensitive circuitry such as VCOs
- Point of load regulation for DSPs, FPGAs, ASICs, and microprocessors
Q & A
- What is the input voltage range of the TPS73225DBVR?
The input voltage range is from 1.7V to 5.5V. - What is the maximum output current of the TPS73225DBVR?
The maximum output current is 250mA. - Does the TPS73225DBVR require an output capacitor for stability?
No, the TPS73225DBVR is stable with or without an output capacitor. - What is the typical dropout voltage of the TPS73225DBVR at full load current?
The typical dropout voltage is 40mV at 250mA. - How does the noise reduction feature work in the TPS73225DBVR?
The noise reduction feature works by connecting a capacitor from the NR pin to ground, which reduces the output noise significantly. - What are the thermal protection features of the TPS73225DBVR?
The device features thermal shutdown and current limit protection. - What is the operating junction temperature range of the TPS73225DBVR?
The operating junction temperature range is from -40°C to 125°C. - What is the shutdown current of the TPS73225DBVR?
The shutdown current is less than 1μA. - In what packages is the TPS73225DBVR available?
The device is available in SOT-23, SOT-223, and VSON packages. - What are some common applications of the TPS73225DBVR?
Common applications include portable and battery-powered equipment, post-regulation for switching supplies, noise-sensitive circuitry, and point of load regulation for DSPs, FPGAs, ASICs, and microprocessors.
