The TPS79501-Q1 low-dropout (LDO), low-power linear voltage regulator features high power-supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in a small outline SON package. The device is stable with a small 1-µF ceramic capacitor on the output. The TPS79501-Q1 uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 110 mV at 500 mA). The device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor) while consuming very low quiescent current (265 µA, typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 µA. The TPS79501-Q1 exhibits approximately 33 µV_RMS of output voltage noise at 3-V output with a 0.1-µF bypass capacitor. Applications with analog components that are noise-sensitive, such as portable RF electronics, benefit from the high-PSRR and low-noise features, as well as from the fast response time.

• Qualified for Automotive Applications
• 500-mA Low-Dropout Regulator With Enable
• High PSRR (50 dB at 10 kHz)
• Ultralow Noise (33 VRMS, TPS79501-Q1)
• Fast Start-Up Time (50 s)
• Stable With a 1-F Ceramic Capacitor
• Excellent Load/Line Transient Response
• Low Dropout Voltage (110 mV at Full Load, TPS79501-Q1)
• APPLICATIONS
  • RF: VCOs, Receivers, ADCs
  • Audio
  • Bluetooth, Wireless LAN

Bluetooth Is a trademark of Texas Instruments

• Output options
• Adjustable Output
• Iout (Max) (A)
• 0.5
• Vin (Max) (V)
• 5.5
• Vin (Min) (V)
• 2.7
• Vout (Max) (V)
• 5.4
• Vout (Min) (V)
• 1.2
• Noise (uVrms)
• 33
• Iq (Typ) (mA)
• 0.26
• Thermal resistance θJA (°C/W)
• 48
• Rating
• Automotive
• Load capacitance (Min) (F)
• 1
• Regulated outputs (#)
• 1
• Features
• Enable
• Accuracy (%)
• 2
• PSRR @ 100 KHz (dB)
• 40
• Dropout voltage (Vdo) (Typ) (mV)
• 110
• Operating temperature range (C)
• -40 to 125

TPS79501-Q1的完整型号有：TPS79501QDRBRQ1，以下是这些产品的关键参数及官网采购报价：

TPS79501QDRBRQ1，工作温度：-40 to 125，封装：SON (DRB)-8，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TPS79501QDRBRQ1的批量USD价格：1.299（1000+）

Source files for SBAA341

这项 TI 参考设计是一款汽车液位/浓度/质量/温度液体测量系统。该设计计划使用基于 C2000 和双通道 TDC1000 超声波 AFE 的超声波测量。此解决方案支持 4.5-40V 系统功能，具备电池反向保护。