Packaging information
| Package | Pins SOT-23 (DBV) | 5 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 250 | SMALL T&R |
Features for the TPS731
- Stable with or without capacitors of all types
- Input voltage range of 1.7V to 5.5V
- Ultra-low dropout voltage: 30mV typical (150mA load)
- Excellent load transient response—with or without optional output capacitor
- New NMOS topology provides low reverse leakage current
- Low noise: 30µVRMS typical (10kHz to 100kHz)
- 0.5% initial accuracy
- 1% overall accuracy over line, load, and temperature
- Less than 1µA maximum IQ in shutdown mode
- Thermal shutdown and specified minimum and maximum current-limit protection
- Available in multiple output voltage versions:
- Fixed outputs: 1.20V to 5V
- Adjustable outputs: 1.2V to 5.5V
- Custom outputs available
Description for the TPS731
The TPS731 low-dropout (LDO) linear voltage regulator uses an NMOS pass transient in a voltage-follower configuration. This topology is stable using output capacitors with low equivalent series resistance (ESR), and even allows operation without a capacitor. The device also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.
The TPS731 uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is less than 1µA and is designed for portable applications. The extremely low output noise (30µVRMS with 0.1µF CNR) is designed for powering VCOs. This device is protected by thermal shutdown and foldback current limit.