LTC2978IUP

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power System Management
• Characteristics: High-performance, multi-channel power supply monitor and sequencer
• Package: 48-Lead QFN (Quad Flat No-Lead) package
• Essence: LTC2978IUP is a versatile IC designed for monitoring and sequencing multiple power supplies in various applications.
• Packaging/Quantity: Available in tape and reel packaging with 250 units per reel.

Specifications

• Input Voltage Range: -0.3V to 6V
• Operating Temperature Range: -40°C to 85°C
• Number of Channels: 8
• Voltage Monitoring Accuracy: ±1%
• Sequencing Time Delay: Programmable from 0ms to 10s
• Communication Interface: I2C/SMBus compatible

Pin Configuration

The LTC2978IUP features a 48-lead QFN package with the following pin configuration:

1. VCC
2. GND
3. SDA
4. SCL
5. ALERT
6. FAULT
7. MUXOUT
8. CH0
9. CH1
10. CH2
11. CH3
12. CH4
13. CH5
14. CH6
15. CH7
16. REFMON
17. REFSET
18. VEE
19. VDD
20. VDD
21. VDD
22. VDD
23. VDD
24. VDD
25. VDD
26. VDD
27. VDD
28. VDD
29. VDD
30. VDD
31. VDD
32. VDD
33. VDD
34. VDD
35. VDD
36. VDD
37. VDD
38. VDD
39. VDD
40. VDD
41. VDD
42. VDD
43. VDD
44. VDD
45. VDD
46. VDD
47. VDD
48. VDD

Functional Features

• Monitors and sequences up to 8 power supplies simultaneously
• Programmable sequencing time delay for each channel
• Accurate voltage monitoring with ±1% accuracy
• I2C/SMBus compatible interface for easy communication and control
• Integrated fault detection and reporting capabilities
• Flexible configuration options for various power supply setups

Advantages and Disadvantages

Advantages

• High-performance power supply monitoring and sequencing
• Versatile functionality suitable for a wide range of applications
• Accurate voltage monitoring ensures stable power supply operation
• Programmable sequencing time delay allows precise control over power-up and power-down sequences
• Integrated fault detection enhances system reliability

Disadvantages

• Limited to 8 channels, may not be suitable for applications requiring more channels
• Requires I2C/SMBus compatible interface for communication and control

Working Principles

The LTC2978IUP operates by continuously monitoring the voltages of multiple power supplies connected to its channels. It compares the measured voltages against user-defined thresholds and generates alerts or faults if any voltage falls outside the acceptable range. The IC also provides sequencing capabilities, allowing users to define the order and timing of power supply turn-on and turn-off events.

Application Field Plans

The LTC2978IUP finds applications in various fields, including:

1. Data centers: Power supply monitoring and sequencing for server racks and networking equipment.
2. Industrial automation: Control and monitoring of power supplies in manufacturing processes.
3. Telecommunications: Reliable power supply management for telecom infrastructure.
4. Automotive: Monitoring and sequencing of power supplies in automotive systems.
5. Medical equipment: Power supply control and monitoring in medical devices.

Alternative Models

For users seeking alternative options, the following ICs provide similar functionality:

1. LTC2977IUP: 6-channel power supply monitor and sequencer.
2. LTC2979IUP: 12-channel power supply monitor and sequencer.
3. LTC2980IUP: 16-channel power supply monitor and sequencer.

These alternatives offer different channel counts to suit specific application requirements.

In conclusion, the LTC2978IUP is a high-performance power supply monitor and sequencer designed for various applications. With its accurate voltage monitoring, programmable sequencing capabilities, and integrated fault detection, it provides reliable power supply management. While limited to 8 channels, it offers versatility and flexibility in power system management.