Overview
The LT8642SIV#PBF is a high-performance synchronous step-down regulator from Analog Devices Inc., designed with the second-generation Silent Switcher architecture. This regulator is optimized to minimize EMI emissions while delivering high efficiency and reliability. It is suitable for a wide range of applications requiring high current output and low noise operation.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Voltage Range | 2.8 | 18 | V | ||
| Output Voltage | 0.597 | V | |||
| Output Current | 10 | A | |||
| Operating Junction Temperature Range | –40 | 125 | °C | ||
| Storage Temperature Range | –65 | 150 | °C | ||
| Minimum On-Time | ILOAD = 3A, SYNC = 2V | 20 | 35 | ns | |
| Minimum Off-Time | 80 | 110 | ns | ||
| Oscillator Frequency | RT = 221k | 175 | kHz | ||
| BIAS Pin Current Consumption | VBIAS = 3.3V, fSW = 2MHz | 20 | mA |
Key Features
- Second-Generation Silent Switcher Architecture: Minimizes EMI emissions, ensuring low noise operation.
- High Efficiency: Delivers high efficiency across a wide range of load currents.
- Adjustable Output Voltage: The output voltage is adjustable and regulated to 0.597V.
- High Output Current: Capable of delivering up to 10A of output current.
- Wide Operating Temperature Range: Operates from –40°C to 125°C, making it suitable for various environmental conditions.
- PG Pin for Power Good Indication: Provides an open-drain output to indicate when the output voltage is within ±8% of the final regulation voltage and there are no fault conditions.
- Compact Package: Available in a 4mm × 4mm QFN package, ideal for space-constrained designs.
Applications
- Industrial Power Supplies: Suitable for high-current industrial power supplies requiring low noise and high efficiency.
- Automotive Systems: Can be used in automotive systems due to its wide operating temperature range and high reliability.
- Telecommunications Equipment: Ideal for telecommunications equipment that require high current output and low EMI.
- Medical Devices: Used in medical devices where high efficiency and low noise are critical.
Q & A
- What is the input voltage range of the LT8642SIV#PBF?
The input voltage range is from 2.8V to 18V.
- What is the maximum output current of the LT8642SIV#PBF?
The maximum output current is 10A.
- What is the regulated output voltage of the LT8642SIV#PBF?
The output voltage is regulated to 0.597V.
- What is the operating junction temperature range of the LT8642SIV#PBF?
The operating junction temperature range is from –40°C to 125°C.
- What is the purpose of the PG pin in the LT8642SIV#PBF?
The PG pin provides an open-drain output to indicate when the output voltage is within ±8% of the final regulation voltage and there are no fault conditions.
- What is the typical BIAS pin current consumption of the LT8642SIV#PBF?
The typical BIAS pin current consumption is 20mA at VBIAS = 3.3V and fSW = 2MHz.
- What is the minimum on-time of the LT8642SIV#PBF?
The minimum on-time is 20ns to 35ns for ILOAD = 3A and SYNC = 2V.
- What package type is the LT8642SIV#PBF available in?
The LT8642SIV#PBF is available in a 4mm × 4mm QFN package.
- Is the LT8642SIV#PBF RoHS compliant?
Yes, the LT8642SIV#PBF is RoHS compliant.
- What are some typical applications of the LT8642SIV#PBF?
Typical applications include industrial power supplies, automotive systems, telecommunications equipment, and medical devices.
