Overview
The LT8619IDD#PBF from Analog Devices Inc. is a high-efficiency, high-speed synchronous monolithic step-down switching regulator. This compact regulator is designed to operate with a wide input voltage range of 3V to 60V and can deliver up to 1.2A of continuous current. It features a low quiescent current of 6μA, making it suitable for applications requiring high efficiency and low power consumption. The LT8619 is available in various package options, including 16-lead MSOP and 10-lead DFN packages, with exposed pads for low thermal resistance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3 to 60 | V |
| Output Current | Up to 1.2 | A |
| Quiescent Current | 6 | μA |
| Operating Frequency | 260 kHz to 2.1 MHz | - |
| Minimum Switch-On Time | 30 ns | - |
| Output Ripple (No Load) | 10 mV P-P | - |
| Efficiency | Up to 92% (0.5A, 5V from 12V) | % |
| Operating Temperature Range | -40°C to 125°C | - |
| Package Options | 16-Lead MSOP, 10-Lead DFN | - |
Key Features
- High efficiency synchronous operation with up to 92% efficiency at 0.5A, 5V from 12V.
- Wide input voltage range of 3V to 60V.
- Low quiescent current of 6μA.
- Fast minimum switch-on time of 30ns.
- Low output ripple of 10mV P-P at no load.
- Synchronizable and programmable fixed frequency operation from 260 kHz to 2.1 MHz.
- Burst mode operation and pulse-skipping mode for high efficiency at low output currents.
- Forced continuous mode operation and synchronization to an external clock via the SYNC pin.
- Internal soft-start and compensation with peak current mode topology.
- Accurate 1V enable pin threshold and power good flag.
- AEC-Q100 qualified for automotive applications.
Applications
- Automotive systems: The LT8619 is AEC-Q100 qualified, making it suitable for various automotive applications.
- Industrial power supplies: Its wide input voltage range and high efficiency make it ideal for industrial power supply designs.
- Portable electronics: The low quiescent current and compact package options are beneficial for battery-powered devices..
- Telecommunications: High efficiency and low ripple make it suitable for telecom equipment power supplies.
Q & A
- What is the input voltage range of the LT8619? The input voltage range is from 3V to 60V..
- What is the maximum output current of the LT8619? The LT8619 can deliver up to 1.2A of continuous current..
- What is the quiescent current of the LT8619? The quiescent current is 6μA..
- What are the available package options for the LT8619? The LT8619 is available in 16-lead MSOP and 10-lead DFN packages..
- Is the LT8619 suitable for automotive applications? Yes, the LT8619 is AEC-Q100 qualified for automotive applications.
- What is the minimum switch-on time of the LT8619? The minimum switch-on time is 30ns.
- Can the LT8619 be synchronized to an external clock? Yes, the LT8619 can be synchronized to an external clock via the SYNC pin.
- What is the typical output ripple of the LT8619 at no load? The typical output ripple at no load is 10mV P-P.
- Does the LT8619 support burst mode operation? Yes, the LT8619 supports burst mode operation and pulse-skipping mode for high efficiency at low output currents.
- What is the operating temperature range of the LT8619? The operating temperature range is from -40°C to 125°C..
