Overview
The TPS7A7100 is a 1-A, fast-transient, low-dropout voltage regulator designed by Texas Instruments. This device is optimized for applications requiring very low dropout voltage and high accuracy over a wide range of operating conditions. The TPS7A7100 features an innovative user-configurable output voltage setting, eliminating the need for external resistors and associated errors. It offers a dropout voltage of 140 mV at 1 A, making it suitable for point-of-load (POL) applications. The regulator is stable with ceramic output capacitors and provides excellent line and load transient response.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| VIN (Input Voltage) | 1.425 | 6.5 | V | |
| VOUT (Output Voltage) | 0.9 | 5 | V | |
| IOUT (Output Current) | 0 | 1 | A | |
| Dropout Voltage (VDO) | 140 | 350 | mV | |
| Output Voltage Accuracy | -2% | 2% | % | |
| Junction Temperature (TJ) | -40 | 125 | °C | |
| Package | 3-mm × 3-mm, 16-pin VQFN; 5-mm × 5-mm, 20-pin VQFN |
Key Features
- Low-dropout voltage: 140 mV at 1 A
- Wide input voltage range: 1.5 V to 6.5 V
- User-configurable output voltage: 0.9 V to 3.5 V in 50-mV steps, and adjustable up to 5 V
- Excellent line and load transient response
- Stable with ceramic output capacitors
- Programmable soft-start to reduce inrush current
- Power-good (PG) output for sequencing power rails
- High accuracy over line, load, and temperature: ±1.5% to ±3% depending on configuration
Applications
- Wireless infrastructure
- RF components
- Set-top boxes
- PCs and printers
- Audio and visual equipment
Q & A
- What is the maximum output current of the TPS7A7100?
The maximum output current of the TPS7A7100 is 1 A.
- What is the dropout voltage of the TPS7A7100 at 1 A?
The dropout voltage of the TPS7A7100 at 1 A is 140 mV.
- What is the input voltage range of the TPS7A7100?
The input voltage range of the TPS7A7100 is from 1.5 V to 6.5 V.
- How is the output voltage of the TPS7A7100 configured?
The output voltage of the TPS7A7100 can be configured using voltage setting pins, allowing for a range from 0.9 V to 3.5 V in 50-mV steps, and it can also be adjusted up to 5 V using external feedback resistors.
- What types of packages are available for the TPS7A7100?
The TPS7A7100 is available in 3-mm × 3-mm, 16-pin VQFN and 5-mm × 5-mm, 20-pin VQFN packages.
- Does the TPS7A7100 have a power-good (PG) output?
Yes, the TPS7A7100 has an open-drain power-good (PG) output for sequencing power rails.
- What is the junction temperature range of the TPS7A7100?
The junction temperature range of the TPS7A7100 is from -40°C to 125°C.
- Is the TPS7A7100 stable with ceramic output capacitors?
Yes, the TPS7A7100 is stable with ceramic output capacitors.
- What is the accuracy of the output voltage of the TPS7A7100?
The output voltage accuracy of the TPS7A7100 is ±1.5% to ±3% depending on the configuration.
- Does the TPS7A7100 support programmable soft-start?
Yes, the TPS7A7100 supports programmable soft-start to reduce inrush current.
