Overview
The TPS79333DBVR is a low-dropout (LDO) linear voltage regulator from Texas Instruments, designed for use in noise-sensitive battery-operated equipment. This regulator is part of the TPS793 family, which is optimized for applications requiring high power-supply rejection ratio (PSRR), ultralow noise, and fast start-up times. The TPS79333DBVR is available in a 5-pin SOT23 (DBV) package and features an advanced, proprietary BiCMOS fabrication process that yields extremely low dropout voltages.
Key Specifications
| Specification | Value |
|---|---|
| Output Voltage | 3.3 V |
| Output Current | 200 mA |
| Input Voltage Range | 2.7 V to 5.5 V |
| Dropout Voltage | 112 mV at 200 mA |
| Power-Supply Rejection Ratio (PSRR) | 70 dB at 10 kHz |
| Noise | 32 μVRMS (TPS79328) |
| Start-Up Time | 50 μs |
| Quiescent Current | 170 μA typical |
| Operating Temperature Range | -40°C to 125°C |
| Package | 5-pin SOT23 (DBV) |
Key Features
- High power-supply rejection ratio (PSRR) of 70 dB at 10 kHz
- Ultralow noise of 32 μVRMS
- Fast start-up time of approximately 50 μs with a 0.001-μF bypass capacitor
- Stable operation with a small 2.2-μF ceramic capacitor on the output
- Excellent load and line transient response
- Very low dropout voltage of 112 mV at 200 mA
- Enable input to reduce supply current to less than 1 μA in standby mode
- Advanced, proprietary BiCMOS fabrication process
Applications
- RF applications: VCOs, receivers, ADCs
- Audio applications
- Cellular and cordless telephones
- Bluetooth and Wireless LAN devices
- Handheld organizers and PDAs
- Portable RF electronics and other noise-sensitive battery-operated equipment
Q & A
- What is the output voltage of the TPS79333DBVR?
The output voltage of the TPS79333DBVR is 3.3 V.
- What is the maximum output current of the TPS79333DBVR?
The maximum output current is 200 mA.
- What is the input voltage range for the TPS79333DBVR?
The input voltage range is from 2.7 V to 5.5 V.
- What is the dropout voltage of the TPS79333DBVR at 200 mA?
The dropout voltage is approximately 112 mV at 200 mA.
- What is the power-supply rejection ratio (PSRR) of the TPS79333DBVR?
The PSRR is 70 dB at 10 kHz.
- How much noise does the TPS79333DBVR produce?
The noise is approximately 32 μVRMS.
- What is the start-up time of the TPS79333DBVR?
The start-up time is approximately 50 μs with a 0.001-μF bypass capacitor.
- What is the quiescent current of the TPS79333DBVR?
The quiescent current is typically 170 μA.
- What is the operating temperature range of the TPS79333DBVR?
The operating temperature range is from -40°C to 125°C.
- In what package is the TPS79333DBVR available?
The TPS79333DBVR is available in a 5-pin SOT23 (DBV) package.
