Overview
The LT8640EUDC#PBF is a high-efficiency, 42V, 5A synchronous step-down regulator produced by Analog Devices Inc. This regulator is part of the Silent Switcher 2 architecture, known for its low noise and EMI performance. It is designed to support a wide range of input and output voltages, making it versatile for various applications, including automotive and industrial supplies.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Input Voltage Range | 3.4 V to 42 V | V |
| Output Voltage Range | 0.97 V to 41.9 V | V |
| Maximum Output Current | 5 A | A |
| Switching Frequency Range | 200 kHz to 3 MHz | Hz |
| Minimum Operating Temperature | -40°C | °C |
| Maximum Operating Temperature | +125°C | °C |
| Package Type | QFN-18, 20-WFQFN, 18 Leads, Exposed Pad | |
| Topology | Synchronous Buck | |
| Regulator Type | Silent Switcher 2 |
Key Features
- High efficiency over a wide load range
- Synchronous rectification for high efficiency
- Silent Switcher 2 architecture for low noise and EMI
- Adjustable and synchronizable switching frequency from 200 kHz to 3 MHz
- Output soft-start and tracking
- Thermally enhanced 20-pin 3mm x 4mm QFN package
- AEC-Q100 qualified for automotive applications
- Stable operation with low-ESR ceramic output capacitors
- Safely tolerates inductor saturation in overload
Applications
- Automotive supplies
- Industrial supplies
- General-purpose step-down applications
- GSM power supplies
Q & A
- What is the input voltage range of the LT8640EUDC#PBF?
The input voltage range is from 3.4 V to 42 V. - What is the maximum output current of the LT8640EUDC#PBF?
The maximum output current is 5 A. - What is the switching frequency range of the LT8640EUDC#PBF?
The switching frequency range is from 200 kHz to 3 MHz. - What is the topology of the LT8640EUDC#PBF?
The topology is synchronous buck. - Is the LT8640EUDC#PBF AEC-Q100 qualified?
Yes, it is AEC-Q100 qualified for automotive applications. - What is the package type of the LT8640EUDC#PBF?
The package type is QFN-18, 20-WFQFN, 18 Leads, Exposed Pad. - What are the operating temperature ranges for the LT8640EUDC#PBF?
The minimum operating temperature is -40°C, and the maximum operating temperature is +125°C. - Does the LT8640EUDC#PBF support synchronization with an external clock?
Yes, it supports synchronization with an external clock through the SYNC/MODE pin. - What are the key advantages of the Silent Switcher 2 architecture in the LT8640EUDC#PBF?
The key advantages include low noise and EMI performance. - Is the LT8640EUDC#PBF RoHS compliant?
Yes, it is RoHS compliant.
