Overview
The LT3045EMSE#PBF is a high-performance low dropout linear regulator (LDO) produced by Analog Devices Inc. This regulator is designed with ultralow noise and ultrahigh power supply rejection ratio (PSRR) architecture, making it ideal for powering noise-sensitive applications. The LT3045 features a robust set of protections and adjustments, ensuring reliable and precise voltage regulation.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Voltage Range | 2 | 20 | V | ||
| Output Voltage Range | VIN > VOUT | 0 | 15 | V | |
| Output Current | 500 | mA | |||
| Minimum IN Pin Voltage | ILOAD = 500mA, VIN UVLO Rising | 1.78 | 2 | V | |
| UVLO Hysteresis | 75 | 2 | mV | ||
| Internal Current Limit | VIN = 2V, VOUT = 0V | 570 | 710 | mA | |
| Operating Junction Temperature Range | –40 | 125 | °C | ||
| Storage Temperature Range | –65 | 150 | °C | ||
| Lead Temperature (Soldering, 10 Sec) | 300 | °C |
Key Features
- Ultralow Noise and Ultrahigh PSRR: Ideal for noise-sensitive applications such as RF power supplies, high-speed data converters, and medical imaging.
- Programmable Current Limit: Allows for adjustable current limiting to suit various application needs.
- Reverse-Battery and Reverse-Current Protection: Enhances reliability by protecting against reverse voltage and current conditions.
- Thermal Shutdown: Prevents overheating by shutting down the regulator when the junction temperature exceeds a certain threshold.
- Adjustable Output Voltage: Output voltage can be adjusted from 0V to 15V, providing flexibility in various applications.
- Compact Packages: Available in 12-lead MSOP and 3mm × 3mm DFN packages, suitable for space-constrained designs.
Applications
- RF Power Supplies: Suitable for powering PLLs, VCOs, mixers, LNAs, and PAs due to its ultralow noise and high PSRR.
- High-Speed/High Precision Data Converters: Ideal for applications requiring low noise and high stability.
- Medical Applications: Used in medical imaging and diagnostic equipment where low noise is critical.
- Post-Regulator for Switching Supplies: Can be used to further regulate the output of switching power supplies to achieve lower noise levels.
Q & A
- What is the maximum output current of the LT3045EMSE#PBF?
The maximum output current is 500mA.
- What is the input voltage range for the LT3045EMSE#PBF?
The input voltage range is from 2V to 20V.
- What are the package options available for the LT3045EMSE#PBF?
The regulator is available in 12-lead MSOP and 3mm × 3mm DFN packages.
- Does the LT3045EMSE#PBF have thermal shutdown protection?
- What is the typical PSRR of the LT3045EMSE#PBF at 1MHz?
The typical PSRR at 1MHz is 76dB.
- Can the output voltage of the LT3045EMSE#PBF be adjusted?
- What is the minimum load required for the LT3045EMSE#PBF?
The minimum load required is 10µA when VOUT < 1V.
- Does the LT3045EMSE#PBF have reverse-battery and reverse-current protection?
- What is the operating junction temperature range for the LT3045EMSE#PBF?
The operating junction temperature range is from –40°C to 125°C.
- What is the storage temperature range for the LT3045EMSE#PBF?
The storage temperature range is from –65°C to 150°C.
