Overview
The LT1764AEFE-1.8 is a high-performance, low dropout (LDO) voltage regulator produced by Linear Technology, now part of Analog Devices. This regulator is designed to provide a stable output voltage of 1.8V with a maximum output current of 3A. It is optimized for fast transient response and low noise, making it suitable for a variety of applications, including sensitive RF supply and high-current power supply needs.
Key Specifications
| Parameter | Value |
|---|---|
| Output Voltage | 1.8V (Fixed) |
| Output Current | 3A |
| Dropout Voltage | 340mV at 3A |
| Quiescent Current | 1mA (Operating), <1µA (Shutdown) |
| Input Voltage Range | 2.7V to 20V |
| Noise | 40µVRMS (10Hz to 100kHz) |
| Line Regulation | 0.01% |
| Load Regulation | 0.025% |
| Package | 16-lead TSSOP (FE package) |
| Protection Features | Reverse Battery Protection, Current Limiting, Thermal Limiting, No Reverse Current |
Key Features
- Optimized for fast transient response and low noise.
- Stable with output capacitors as low as 10µF, including ceramic capacitors.
- No protection diodes needed.
- Controlled quiescent current in dropout.
- Reverse battery protection, current limiting, and thermal limiting.
- No reverse current flow.
- Low quiescent current: 1mA operating, <1µA in shutdown.
Applications
The LT1764AEFE-1.8 is ideal for various high-performance applications, including:
- Sensitive RF supply applications due to its low noise characteristics.
- Post-regulation for switching supplies to provide a stable and clean output voltage.
- High-current power supply needs in industrial, automotive, and consumer electronics.
- Logic power supplies requiring stable and low-noise voltage regulation.
Q & A
- What is the output voltage of the LT1764AEFE-1.8?
The output voltage is fixed at 1.8V. - What is the maximum output current of the LT1764AEFE-1.8?
The maximum output current is 3A. - What is the dropout voltage of the LT1764AEFE-1.8 at 3A output current?
The dropout voltage is 340mV at 3A output current. - What is the quiescent current of the LT1764AEFE-1.8 in operating and shutdown modes?
The quiescent current is 1mA in operating mode and <1µA in shutdown mode. - What is the input voltage range of the LT1764AEFE-1.8?
The input voltage range is from 2.7V to 20V. - Is the LT1764AEFE-1.8 stable with ceramic capacitors?
Yes, it is stable with ceramic capacitors as well as with output capacitors as low as 10µF. - What protection features does the LT1764AEFE-1.8 have?
The device includes reverse battery protection, current limiting, thermal limiting, and no reverse current protection. - In what package is the LT1764AEFE-1.8 available?
The device is available in a 16-lead TSSOP (FE package). - What are some typical applications of the LT1764AEFE-1.8?
Typical applications include sensitive RF supply, post-regulation for switching supplies, high-current power supplies, and logic power supplies. - Is the LT1764AEFE-1.8 compliant with RoHS regulations?
Yes, the LT1764AEFE-1.8 is RoHS compliant.
