Low noise, fast transient response LDO regulator | Heisener Electronics
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Low noise, fast transient response LDO regulator

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Data de postagem: 2023-03-29, Linear Technology

The LT1963A series is a low drop regulator optimized for fast transient response. The device is capable of delivering 1.5A output current and 340mV voltage reduction. The working static current is 1mA and drops to < when the machine is shut down. 1µA. Good static current control; It does not rise on exit as many other regulators do.


Pin Configuration

      

In addition to fast transient response, LT1963A regulators have very low output noise, making them ideal for sensitive RF power applications. The output voltage ranges from 1.21V to 20V. The LT1963A voltage regulator has output capacitance as low as 10 μF. The internal protection circuit includes battery reverse protection, current limiting, heat limiting and reverse current protection.


Typical Application

               

These devices are available with fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V and adjustable reference voltages of 1.21V. The LT1963A regulator is available in 5-pin TO-220, DD, 3-pin SOT-223, 8-pin SO, and 16-pin TSSOP packages.


Features

● Optimize fast transient response

● Output current :1.5A

● Dropout Voltage: 340mV

● Low noise :40µVRMS (10Hz ~ 100kHz)

● 1mA static current

● No need to protect the diode

● Control static current in dropout

● Fixed output voltage :1.5V, 1.8V, 2.5V, 3.3V

● The output is adjustable from 1.21V to 20V

● < 1 μA shutdown rest current

● Stable 10µF output capacitance 

● Stable ceramic capacitor 

● Battery reverse protection

● No reverse current

● Thermal restriction

● 5-Lead TO-220, DD, 3-Lead SOT-223 and 8 lead SO package


Applications

● 3.3V to 2.5V Logic Power Supplies

● Post Regulator for Switching Supplies

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