Overview
The LTC3370EUH#TRPBF, produced by Analog Devices Inc., is a highly flexible multioutput power supply IC. This device integrates four synchronous buck converters that can be configured to share eight individual 1A power stages, allowing for various output configurations such as 1A, 2A, 3A, or 4A per channel. It is designed for applications requiring reliable power-up sequencing and efficient power management.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Input Voltage Range | 2.25V to 5.5V | Independent VIN supplies for each DC/DC |
| Output Voltage Range | 0.8V to 5.5V | Adjustable output voltage |
| Output Current | Up to 4A per channel (configurable as 1A, 2A, 3A, or 4A) | Eight 1A power stages configurable in various combinations |
| Switching Frequency | 1MHz to 3MHz (2MHz default) or PLL synchronization | Programmable frequency |
| No Load Supply Current | Zero current in shutdown, 63µA in burst mode (one channel active), 18µA per additional channel | Low power consumption in idle states |
| Package | 32-lead 5mm × 5mm QFN | |
| Operating Junction Temperature Range | –40°C to 150°C | |
| Storage Temperature Range | –65°C to 150°C |
Key Features
- Four current mode synchronous buck regulators with eight individual 1A power stages, configurable as 1A, 2A, 3A, or 4A regulators.
- Independent VIN supplies for each DC/DC converter.
- Precision enable pin thresholds for autonomous sequencing.
- Low total no load supply current: zero current in shutdown, 63µA in burst mode (one channel active), and 18µA per additional channel.
- Programmable switching frequency (1MHz to 3MHz) or PLL synchronization.
- Temperature monitor indicates die temperature.
- PGOODALL pin indicates all enabled bucks are in regulation.
Applications
- General purpose multichannel power supplies.
- Automotive systems.
- Industrial equipment.
- Distributed power systems.
Q & A
- What is the input voltage range of the LTC3370EUH#TRPBF?
The input voltage range is 2.25V to 5.5V, with independent VIN supplies for each DC/DC converter.
- How can the output current be configured?
The output current can be configured using eight 1A power stages, allowing for combinations of 1A, 2A, 3A, or 4A per channel.
- What is the switching frequency range of the LTC3370EUH#TRPBF?
The switching frequency range is 1MHz to 3MHz, with a default frequency of 2MHz, or it can be synchronized using PLL.
- What is the no load supply current of the LTC3370EUH#TRPBF?
The no load supply current is zero in shutdown, 63µA in burst mode (one channel active), and 18µA per additional channel.
- What package type is the LTC3370EUH#TRPBF available in?
The LTC3370EUH#TRPBF is available in a 32-lead 5mm × 5mm QFN package.
- What are the key features of the LTC3370EUH#TRPBF for power sequencing?
The device features precision enable pin thresholds for autonomous sequencing and a PGOODALL pin to indicate all enabled bucks are in regulation.
- What are the typical applications of the LTC3370EUH#TRPBF?
Typical applications include general purpose multichannel power supplies, automotive systems, industrial equipment, and distributed power systems.
- How does the LTC3370EUH#TRPBF manage temperature?
The device includes a temperature monitor to indicate the die temperature.
- What is the operating junction temperature range of the LTC3370EUH#TRPBF?
The operating junction temperature range is –40°C to 150°C.
- Is the LTC3370EUH#TRPBF suitable for high-efficiency power conversion?
Yes, the device is designed for high-efficiency power conversion with features like synchronous buck regulators and low no load supply current.
