Texas Instruments TPS7A89 LDO Voltage Regulator
Texas Instruments TPS7A89 LDO Voltage Regulator is a dual, low-noise, low-dropout (LDO) voltage regulator capable of sourcing 2A per channel with only 400mV of maximum dropout. The TPS7A89 provides the flexibility of two independent LDOs and an approximately 60% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8V to 5.2V. The wide input-voltage range of the TPS7A89 supports operation as low as 1.4V and up to 6.5V. With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A89 is ideal for powering sensitive analog low-voltage devices. The Texas Instruments TPS7A89 is designed to power noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications.Features
- Two independent LDO channels
- 4mm×4mm, 20-pin WQFN package
- 3.8µVRMS (10Hz to 100kHz) low output noise
- 180mV (typ) at 2A low dropout
- 1.4V to 6.5V wide input voltage range
- 0.8V to 5.2V wide output voltage range
- High Power-Supply Rejection Ratio (PSRR)
- 75dB at DC
- 40dB at 100kHz
- 40dB at 1MHz
- 1.0% accuracy over line, load, and temperature
- Excellent load transient response
- Adjustable start-up in-rush control
- Selectable soft-start charging current
- Independent open-drain Power-Good (PGx) outputs
- Stable with a 10µF or larger ceramic output capacitor
Applications
- High-speed analog circuits
- VCOs, ADCs, DACs, LVDSs
- Imaging (CMOS sensors, video ASICs)
- Test and measurement
- Instrumentation, medical, and audio
- Digital loads auxiliary rails
- SerDes, FPGAs, DSPs
Functional Block Diagram
Opublikowano: 2017-01-24
| Zaktualizowano: 2022-03-21
