TPS7A45中文资料具有反向电流保护和使能功能的 1.5A、20V 超低压降稳压器数据手册TI规格书

描述 Description

The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. In addition to fast transient response, the TPS7A45xx regulators have very-low output noise, which makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21 to 20 V. The TPS7A45xx regulators are stable with output capacitance as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V, and as an adjustable device with a 1.21-V reference voltage.

特性 Features

• Optimized for Fast Transient Response
• High Output Voltage Accuracy: 1% at 25°C
• Low Noise: 35 µVRMS (10 Hz to 100 kHz)
• 1-mA Quiescent Current
• Controlled Quiescent Current in Dropout
• Adjustable Output from 1.21 V to 20 V (TPS7A4501 Only)
• Stable With 10-µF Ceramic Output Capacitor
• Reverse Current Protection