Overview
The LT8646SIV#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 maintaining high efficiency. This regulator is part of the LT8645S/LT8646S series and is particularly suited for applications requiring low noise and high reliability.
The device is available in a 32-lead 6mm × 4mm × 0.94mm LQFN package and is AEC-Q100 qualified for automotive applications, ensuring its suitability for demanding environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.4 to 65 | V |
| Output Current | 8 | A |
| Switching Frequency Range | 200 kHz to 2.2 MHz | |
| Minimum Switch On-Time | 40 ns | |
| Quiescent Current | 2.5 µA | |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | 32-Lead LQFN (6mm × 4mm × 0.94mm) | |
| Vout Maximum | 0.97Vin | |
| Vref Accuracy Over Temp | 1.5% |
Key Features
- Second-generation Silent Switcher architecture to minimize EMI emissions.
- Fast minimum switch on-time of 40 ns.
- Low dropout under all conditions: 60 mV at 1 A.
- Adjustable and synchronizable frequency range from 200 kHz to 2.2 MHz.
- Peak current mode operation.
- Output soft-start and tracking.
- Burst mode operation and spread spectrum capability.
- AEC-Q100 qualified for automotive applications.
Applications
- Automotive supplies.
- Industrial power supplies.
- General-purpose step-down converters.
- GSM power supplies.
- Any application requiring low EMI and high efficiency.
Q & A
- What is the input voltage range of the LT8646SIV#PBF?
The input voltage range is from 3.4 V to 65 V.
- What is the maximum output current of the LT8646SIV#PBF?
The maximum output current is 8 A.
- What is the switching frequency range of the LT8646SIV#PBF?
The switching frequency range is from 200 kHz to 2.2 MHz.
- What is the minimum switch on-time of the LT8646SIV#PBF?
The minimum switch on-time is 40 ns.
- What is the quiescent current of the LT8646SIV#PBF?
The quiescent current is 2.5 µA.
- What is the operating temperature range of the LT8646SIV#PBF?
The operating temperature range is from -40°C to 125°C.
- What package type is the LT8646SIV#PBF available in?
The device is available in a 32-lead LQFN package (6mm × 4mm × 0.94mm).
- Is the LT8646SIV#PBF AEC-Q100 qualified?
Yes, the LT8646SIV#PBF is AEC-Q100 qualified for automotive applications.
- What are some common applications for the LT8646SIV#PBF?
Common applications include automotive supplies, industrial power supplies, general-purpose step-down converters, and GSM power supplies.
- Does the LT8646SIV#PBF support external synchronization?
Yes, the LT8646SIV#PBF supports external synchronization.
