Overview
The LT8609HMSE#PBF from Analog Devices is a high-efficiency, high-speed synchronous monolithic step-down switching regulator. This compact device is designed to operate within a wide input voltage range of 2.7V to 42V and can deliver up to 3A of continuous output current. It is available in various packages, including 10-Lead Plastic MSOP, and is suitable for a variety of applications requiring high efficiency and low EMI.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Minimum Input Voltage | 2.7 | 3.0 | 3.2 | V |
| Quiescent Current (LT8609/LT8609A) | 1 | 1.7 | 4 | µA |
| Quiescent Current (LT8609B) | 1 | 350 | 4 | µA |
| Output Current | 3 | A | ||
| Switching Frequency | 200kHz | 2.2MHz | ||
| Minimum On-Time | 45 | 60 | ns | |
| Minimum Off-Time | 90 | 130 | ns | |
| Operating Junction Temperature Range | -40°C | 125°C | ||
| Storage Temperature Range | -65°C | 150°C |
Key Features
- High efficiency, with >93% efficiency at 1A, 5V output from 12V input.
- High-speed synchronous operation up to 2.2MHz.
- Burst mode operation for high efficiency down to very low output currents.
- Peak current mode operation with internal compensation, allowing the use of small inductors and fast transient response.
- Adjustable and synchronizable output voltage, with fixed 3.3V and 5V options available.
- Spread spectrum frequency modulation for low EMI operation.
- Accurate 1V enable pin threshold and output soft-start capability.
- Compact 10-Lead Plastic MSOP package.
Applications
The LT8609HMSE#PBF is suitable for a wide range of applications, including:
- Power supplies for industrial and automotive systems, where high efficiency and reliability are critical.
- Portable electronics, such as laptops and tablets, requiring compact and efficient power management solutions.
- Telecommunication equipment, where low EMI and high efficiency are essential.
- Medical devices, where reliability and efficiency are paramount.
Q & A
- What is the input voltage range of the LT8609HMSE#PBF? The input voltage range is from 2.7V to 42V.
- What is the maximum output current of the LT8609HMSE#PBF? The maximum output current is 3A.
- What are the available switching frequencies for the LT8609HMSE#PBF? The switching frequency can be adjusted from 200kHz to 2.2MHz.
- Does the LT8609HMSE#PBF support burst mode operation? Yes, it supports burst mode operation for high efficiency at low output currents.
- What is the quiescent current of the LT8609HMSE#PBF? The quiescent current is 1.7µA for LT8609/LT8609A and 350µA for LT8609B.
- What are the available package options for the LT8609HMSE#PBF? It is available in 10-Lead Plastic MSOP, 16-Lead Plastic MSOP, and 10-Lead 3mm x 3mm DFN packages.
- Does the LT8609HMSE#PBF support spread spectrum frequency modulation? Yes, it supports spread spectrum frequency modulation for low EMI operation.
- What is the operating junction temperature range of the LT8609HMSE#PBF? The operating junction temperature range is from -40°C to 125°C.
- Is the LT8609HMSE#PBF suitable for automotive applications? Yes, it is available in automotive-grade versions designated with a #W suffix.
- What is the minimum on-time of the LT8609HMSE#PBF? The minimum on-time is 45ns).
