--- 產品詳情 ---
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) (μF) | 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 |
- Qualified for Automotive Applications
- 500-mA Low-Dropout Regulator With Enable
- High PSRR (50 dB at 10 kHz)
- Ultralow Noise (33 μVRMS, TPS79501-Q1)
- Fast Start-Up Time (50 μs)
- Stable With a 1-μF 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
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 μVRMS 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.
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