Overview
The LT1764A, specifically the LT1764AMPQ#TRPBF, is a low dropout regulator (LDO) designed and manufactured by Analog Devices Inc. This device is optimized for fast transient response and is capable of supplying up to 3A of output current. It features a low dropout voltage of 340mV at 3A, making it suitable for a wide range of applications requiring stable and efficient voltage regulation.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Output Current | 3 | A |
| Dropout Voltage | 340 | mV (at 3A) |
| Quiescent Current | 1 | mA |
| Input Voltage Range | 2.7 to 20 | V |
| Output Noise | 40 | µVRMS (10Hz to 100kHz) |
| Fixed Output Voltages | 1.5, 1.8, 2.5, 3.3 | V |
| Adjustable Output Range | 1.21 to 20 | V |
| Shutdown Quiescent Current | <1 | µA |
| Output Capacitor Stability | Stable with 10µF Ceramic, Tantalum, or Aluminum Electrolytic | |
| Reverse Battery Protection | Yes | |
| No Reverse Current | Yes | |
| Thermal Limiting | Yes |
Key Features
- Optimized for fast transient response
- Low noise: 40µVRMS (10Hz to 100kHz)
- No protection diodes needed
- Controlled quiescent current in dropout
- Fixed and adjustable output voltage options
- Stable with ceramic, tantalum, or aluminum electrolytic output capacitors
- Reverse battery protection and no reverse current
- Thermal limiting for overtemperature protection
Applications
The LT1764A is suitable for a variety of applications requiring high current and low dropout voltage, including:
- Power supplies for high-current devices
- Battery-powered systems
- Industrial control systems
- Automotive electronics
- Telecommunication equipment
- Medical devices
Q & A
- What is the maximum output current of the LT1764A?
The LT1764A can supply up to 3A of output current. - What is the dropout voltage of the LT1764A at 3A?
The dropout voltage is 340mV at 3A. - What is the quiescent current of the LT1764A?
The quiescent current is 1mA. - What is the input voltage range of the LT1764A?
The input voltage range is from 2.7V to 20V. - Does the LT1764A have fixed output voltage options?
Yes, it has fixed output voltages of 1.5V, 1.8V, 2.5V, and 3.3V, as well as an adjustable output range from 1.21V to 20V. - Is the LT1764A stable with ceramic capacitors?
Yes, it is stable with ceramic, tantalum, or aluminum electrolytic output capacitors. - Does the LT1764A have reverse battery protection?
Yes, it has reverse battery protection and no reverse current. - What is the shutdown quiescent current of the LT1764A?
The shutdown quiescent current is less than 1µA. - Is the LT1764A protected against overtemperature?
Yes, it has thermal limiting for overtemperature protection. - What are some common applications of the LT1764A?
Common applications include power supplies for high-current devices, battery-powered systems, industrial control systems, automotive electronics, telecommunication equipment, and medical devices.
