器件名称: TPS7A80XX_1
功能描述: Low-Noise, High-Bandwidth PSRR,Low-Dropout 1A Linear Regulator
文件大小: 1520.58KB 共24页
简 介:TPS7A80xx
www.ti.com SBVS135A – JUNE 2010 – REVISED JUNE 2010
Low-Noise, High-Bandwidth PSRR, Low-Dropout 1A Linear Regulator
Check for Samples: TPS7A80xx
1
FEATURES
Low-Dropout 1A Regulator with Enable Available in Multiple Output Versions: – Fixed Output Voltages: 0.8V to 5.0V Using Innovative Factory EEPROM Programming – Adjustable Output Voltages: 0.8V to 6.0V Ultra-High PSRR: – 63dB at 1kHz – 57dB at 100kHz – 38dB at 1MHz Low Noise: 15.6 × VOUT mVRMS typical (100Hz to 100kHz) Stable with a 4.7mF Ceramic Capacitor Excellent Load/Line Transient Response 3% Overall Accuracy (over Load/Line/Temp) Over-Current and Over-Temperature Protection Very Low Dropout: 170mV Typical at 1A 3mm × 3mm SON-8 DRB Package
DESCRIPTION
The TPS7A80xx family of low-dropout linear regulators (LDOs) offer very high power-supply ripple rejection (PSRR) at the output. This series of LDOs uses an advanced BiCMOS process and a PMOSFET pass device to achieve very low noise, excellent transient response, and excellent PSRR performance. The TPS7A80xx is stable with a 4.7mF ceramic output capacitor, and uses a precision voltage reference and feedback loop to achieve a worst-case accuracy of 3% over all load, line, process, and temperature variations. This device is fully specified over the temperature range of TJ = –40°C to +125°C and is offered in a 3mm × 3mm, SON-8 package with a thermal pad.
Typical Application Circuit for Fixed Voltage Versions
Optional 1.0mF input capacitor. May improve source imp……