Overview
The LT8640SIV#PBF is a synchronous step-down regulator produced by Analog Devices Inc. It features the second-generation Silent Switcher architecture, designed to minimize EMI emissions while delivering high efficiency. This regulator is part of the LT8640S and LT8643S family, known for their robust performance and reliability. The device is available in a 24-lead LQFN package and is suitable for a wide range of applications requiring high-performance DC-DC conversion.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Voltage Range | 3.0 | 3.4 | 42 | V | |
| Output Voltage Range | 0.97 | 25 | V | ||
| Output Current | 6 | A | |||
| Switching Frequency | fSW = 1MHz | 1 | MHz | ||
| Quiescent Current in Shutdown | VEN/UV = 0V | 0.75 | 0.75 | 3 | µA |
| Quiescent Current in Sleep | VEN/UV = 2V, VFB > 0.97V, VSYNC = 0V | 1.7 | 1.7 | 10 | µA |
| Operating Temperature Range | -40 | 125 | °C | ||
| Storage Temperature Range | -65 | 150 | °C | ||
| Maximum Reflow Temperature | 260 | °C |
Key Features
- Silent Switcher architecture to minimize EMI emissions.
- High efficiency with up to 95% efficiency at 12V input to 5V output.
- Wide input voltage range from 3.4V to 42V.
- Output voltage range from 0.97V to 25V.
- High output current capability up to 6A.
- Spread Spectrum Modulation for reduced EMI.
- Overtemperature protection to protect the device during overload conditions.
- Available in automotive-grade versions with controlled manufacturing for reliability.
- RoHS and WEEE compliant.
Applications
The LT8640SIV#PBF is suitable for various applications requiring high-performance DC-DC conversion, including:
- Automotive systems: Due to its automotive-grade versions, it is ideal for use in automotive applications where reliability and robustness are critical.
- Industrial power supplies: Its high efficiency and wide input voltage range make it suitable for industrial power supply systems.
- Telecommunications: It can be used in telecom equipment where low EMI and high reliability are essential.
- Medical devices: The regulator’s high performance and reliability make it a good fit for medical device applications.
Q & A
- What is the input voltage range of the LT8640SIV#PBF? The input voltage range is from 3.4V to 42V.
- What is the maximum output current of the LT8640SIV#PBF? The maximum output current is up to 6A.
- What is the Silent Switcher architecture? The Silent Switcher architecture is designed to minimize EMI emissions while delivering high efficiency.
- Is the LT8640SIV#PBF RoHS and WEEE compliant? Yes, the device is RoHS and WEEE compliant.
- What are the operating and storage temperature ranges of the LT8640SIV#PBF? The operating temperature range is from -40°C to 125°C, and the storage temperature range is from -65°C to 150°C.
- Does the LT8640SIV#PBF have overtemperature protection? Yes, it includes overtemperature protection to protect the device during overload conditions.
- What is the maximum reflow temperature for the LT8640SIV#PBF? The maximum reflow temperature is 260°C.
- Is the LT8640SIV#PBF available in automotive-grade versions? Yes, versions with controlled manufacturing for automotive applications are available, designated with a #W suffix.
- What is the switching frequency of the LT8640SIV#PBF? The switching frequency can be set to 1MHz.
- What type of package does the LT8640SIV#PBF come in? It comes in a 24-lead LQFN package.
