Overview
The LTC2977CUP#TRPBF is an 8-channel Power System Manager (PSM) developed by Analog Devices Inc. This integrated circuit is designed to manage, sequence, trim, margin, supervise, and provide telemetry for power systems. It supports PMBus™ commands, enabling precise control over power supply sequencing and voltage adjustment. The device is part of the LTpowerPlay® GUI-supported family, which simplifies configuration and monitoring. It is particularly useful in applications requiring accurate output voltage measurement, fault management, and comprehensive system supervision.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Manufacturer | Analog Devices Inc. | |
| Part Number | LTC2977CUP#TRPBF | |
| Package Type | 64-Pin Plastic QFN | |
| Operating Junction Temperature | 0°C to 70°C | |
| Supply Input Operating Range | 4.5V to 15V | V |
| Supply Current (VPWR = 4.5V to 15V) | 10 to 13 mA | mA |
| Conversion Time (Voltage Sense Mode) | 6.15 ms | ms |
| Conversion Time (Current Sense Mode) | 24.6 ms | ms |
| Update Time (Odd Numbered Channels in Current Sense Mode) | 160 ms | ms |
Key Features
- PMBus™ compliant command set for power supply sequencing and precision voltage adjustment
- Supported by LTpowerPlay® GUI for easy configuration and monitoring
- Margin or trim supplies to within 0.25% of target
- Fast overvoltage and undervoltage supervisors per channel, operating autonomously without additional software
- Coordinate sequencing and fault management across multiple LTC PSM devices
- Internal temperature and input voltage supervisors
- Accurate monitoring of eight output voltages, input voltage, and internal die temperature
- I²C/SMBus serial interface with programmable watchdog timer
- 100% pin-compatible upgrade to the LTC2978/LTC2978A
- Programmable fault responses with optional retry after fault detection
- Automatic black box EEPROM storage of fault status and associated telemetry
Applications
- Data centers and cloud computing infrastructure
- Telecommunication equipment
- High-performance computing systems
- Industrial control systems
- Aerospace and defense systems
- Automotive systems (with appropriate temperature-grade models)
Q & A
- What is the LTC2977CUP#TRPBF used for?
The LTC2977CUP#TRPBF is an 8-channel Power System Manager used for sequencing, trimming, margining, supervising, and providing telemetry for power systems.
- What is the operating temperature range of the LTC2977CUP#TRPBF?
The operating junction temperature range is 0°C to 70°C.
- What is the supply input operating range of the LTC2977CUP#TRPBF?
The supply input operating range is from 4.5V to 15V.
- Does the LTC2977CUP#TRPBF support PMBus commands?
- How does the LTC2977CUP#TRPBF handle fault management?
The device can manage faults, disable power supplies upon fault detection, and optionally retry after a fault. It also stores fault status and associated telemetry in an EEPROM.
- What interface does the LTC2977CUP#TRPBF use for communication?
The device uses an I²C/SMBus serial interface with a programmable watchdog timer.
- Is the LTC2977CUP#TRPBF compatible with other LTC devices?
- What kind of supervision does the LTC2977CUP#TRPBF provide?
The device provides internal temperature and input voltage supervision, as well as overvoltage and undervoltage supervisors per channel.
- How accurate is the voltage monitoring of the LTC2977CUP#TRPBF?
The device can margin or trim supplies to within 0.25% of the target voltage.
- What is the typical conversion time for voltage sense mode?
The typical conversion time for voltage sense mode is 6.15 ms.
- Can the LTC2977CUP#TRPBF be used in automotive applications?
For automotive applications, models with the #W suffix should be used, which are designed to meet automotive reliability requirements.
