Overview
The LT8643SEV#PBF is a synchronous step-down regulator from Analog Devices Inc., featuring the second-generation Silent Switcher architecture. This regulator is designed to minimize EMI emissions while delivering high efficiency and performance. It is available in a 24-lead LQFN package with dimensions of 4mm × 4mm × 0.94mm, making it suitable for compact and high-density designs. The LT8643SEV#PBF is RoHS and WEEE compliant and supports a wide range of operating temperatures, making it versatile for various applications, including automotive systems with controlled manufacturing for reliability and quality.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Minimum Input Voltage | 3.0 | 3.4 | V | ||
| Quiescent Current in Shutdown | VEN/UV = 0V | 0.75 | 0.75 | 3 | µA |
| Quiescent Current in Sleep (Internal Compensation) | VEN/UV = 2V, VFB > 0.97V, VSYNC = 0V | 1.7 | 1.7 | 10 | µA |
| Error Amp Transconductance | VC = 1.25V | 1.7 | mS | ||
| Top Power NMOS On-Resistance | ISW = 1A | 66 | mΩ | ||
| Top Power NMOS Current Limit | 7.5 | 10 | 12.5 | A | |
| Oscillator Frequency | RT = 221k | 180 | 210 | 240 | kHz |
| Operating Temperature Range | –40°C | 125°C | °C |
Key Features
- Silent Switcher Architecture: Designed to minimize EMI emissions, making it suitable for noise-sensitive applications.
- High Efficiency: Delivers high efficiency across a wide range of input and output voltages.
- Wide Input Voltage Range: Operates from 3.0V to 42V, providing flexibility in various power supply designs.
- High Current Capability: Supports up to 6A of output current, making it suitable for high-power applications.
- Compact Package: Available in a 24-lead LQFN package with dimensions of 4mm × 4mm × 0.94mm, ideal for space-constrained designs.
- Automotive Grade: Versions with controlled manufacturing are available to support the quality and reliability requirements of automotive applications.
- RoHS and WEEE Compliant: Ensures environmental compliance and sustainability.
Applications
- Automotive Systems: Suitable for use in automotive applications due to its robust design and compliance with automotive reliability standards.
- Industrial Power Supplies: Ideal for high-efficiency power supplies in industrial settings where noise minimization is critical.
- Telecommunications: Used in telecommunications equipment where high reliability and low EMI are essential.
- Medical Devices: Applicable in medical devices requiring high efficiency and minimal noise.
- Consumer Electronics: Suitable for use in consumer electronics where space is limited and high efficiency is required.
Q & A
- What is the input voltage range of the LT8643SEV#PBF?
The input voltage range is from 3.0V to 42V.
- What is the maximum output current of the LT8643SEV#PBF?
The maximum output current is up to 6A.
- What is the package type and dimensions of the LT8643SEV#PBF?
The package type is a 24-lead LQFN with dimensions of 4mm × 4mm × 0.94mm.
- Is the LT8643SEV#PBF RoHS and WEEE compliant?
- What are the operating temperature ranges for the LT8643SEV#PBF?
- Does the LT8643SEV#PBF have versions suitable for automotive applications?
- What is the Silent Switcher architecture used in the LT8643SEV#PBF?
- What is the typical quiescent current in shutdown mode for the LT8643SEV#PBF?
- What is the error amp transconductance of the LT8643SEV#PBF?
- What is the top power NMOS on-resistance of the LT8643SEV#PBF?
