Overview
The LT8646SIV#WPBF from Analog Devices Inc. is a high-performance synchronous step-down regulator that incorporates the second-generation Silent Switcher architecture. This design is specifically aimed at minimizing EMI emissions, making it suitable for applications where electromagnetic interference is a critical concern. The regulator is part of the LT8645S/LT8646S family and is designed to provide efficient and reliable power conversion in a compact package.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Minimum Input Voltage | 3.0 | 3.4 | V | ||
| Quiescent Current in Shutdown | VEN/UV = 0V | 0.9 | 0.9 | 3 | µA |
| Quiescent Current in Regulation | VEN/UV = 2V, VFB > 0.97V, VSYNC = 2V, RT = 60.4k, VBIAS = 0V | 0.6 | 0.8 | mA | |
| Feedback Reference Voltage | VIN = 6V | 0.958 | 0.970 | 0.982 | V |
| Feedback Voltage Line Regulation | VIN = 4.0V to 42V | 0.004 | 0.025 | %/V | |
| Operating Junction Temperature Range | –40°C | 125°C | °C | ||
| Storage Temperature Range | –65°C | 150°C | °C | ||
| Maximum Reflow (Package Body) Temperature | 260°C | °C | |||
| Output Current | 8A | A | |||
| Input Voltage Range | 65V | V |
Key Features
- Second-Generation Silent Switcher Architecture: Designed to minimize EMI emissions, making it ideal for noise-sensitive applications.
- High Efficiency: Optimized for high efficiency across a wide range of input and output voltages.
- Low Quiescent Current: Features a quiescent current as low as 2.5µA in no-load conditions, enhancing power efficiency.
- Wide Input Voltage Range: Supports input voltages up to 65V, making it versatile for various power supply needs.
- High Output Current: Capable of delivering up to 8A of output current.
- Compact Package: Available in a 6mm × 4mm QFN package, suitable for space-constrained designs.
- Automotive Grade: Versions with the #W suffix are designed to meet the quality and reliability requirements of automotive applications.
Applications
- Automotive Systems: Ideal for automotive power supplies due to its high reliability and compliance with automotive standards.
- Industrial Power Supplies: Suitable for industrial applications requiring high efficiency and low EMI.
- Telecommunications: Used in telecom equipment where low noise and high efficiency are critical.
- Aerospace and Defense: Applicable in aerospace and defense systems where reliability and low EMI are essential.
- Consumer Electronics: Can be used in consumer electronics requiring efficient and quiet power conversion.
Q & A
- What is the minimum input voltage for the LT8646SIV#WPBF?
The minimum input voltage is 3.0V. - What is the quiescent current in shutdown mode?
The quiescent current in shutdown mode is 0.9µA. - What is the feedback reference voltage?
The feedback reference voltage is 0.970V. - What is the operating junction temperature range?
The operating junction temperature range is –40°C to 125°C. - Is the LT8646SIV#WPBF suitable for automotive applications?
Yes, versions with the #W suffix are designed to meet automotive standards. - What is the maximum output current of the LT8646SIV#WPBF?
The maximum output current is 8A. - What package type is the LT8646SIV#WPBF available in?
The LT8646SIV#WPBF is available in a 6mm × 4mm QFN package. - What is the maximum reflow temperature for the package?
The maximum reflow temperature is 260°C. - Is the LT8646SIV#WPBF RoHS and WEEE compliant?
Yes, parts ending with PBF are RoHS and WEEE compliant. - What is the storage temperature range for the LT8646SIV#WPBF?
The storage temperature range is –65°C to 150°C.
