LTC2970
LTC2970
LTC2970-1
RECOMMENDED FOR NEW DESIGNS
Dual I2C Power Supply Monitor and Margining Controller
- Part Models
- 12
- 1ku List Price
- Starting From $5.30
Viewing:
Overview
- Less Than ±0.5% Total Unadjusted Error 14-Bit ΔΣ ADC with On-Chip Reference
- Dual, 8-Bit IDACs with 1x Voltage Buffers
- Linear, Voltage Servo Adjusts Supply Voltages by Ramping IDAC Outputs Up/Down
- I2C Bus Interface (SMBus Compatible)
- Extensive, User Configurable Fault Monitoring
- On-Chip Temperature Sensor
- Available in 24-Pin 4mm × 5mm QFN Package
The LTC2970 is a dual power supply monitor and margining controller with an SMBus compatible I2C bus interface. A low-drift, on-chip reference and 14-bit ΔΣ A/D converter allow precise measurements of supply voltages, load currents or internal die temperature. Fault management allows ALERT to be asserted for configurable overvoltage and undervoltage fault conditions. Two voltage buffered, 8-bit IDACs allow highly accurate programming of DC/DC converter output voltages. The IDACs can be configured to automatically servo the power supplies to the desired voltages using the ADC. The LTC2970-1 adds a tracking feature that can be used to turn multiple power supplies on or off in a controlled manner.
The bus address is set to 1 of 9 possible combinations by pin strapping the ASEL0 and ASEL1 pins. The LTC2970/ LTC2970-1 are packaged in a 24-pin, 4mm × 5mm QFN package.
Applications
- Dual Power Supply Voltage Servo
- Monitoring Supply Voltage and Current
- Programmable Power Supplies
- Programmable Reference
Documentation
Data Sheet 1
User Guide 2
Application Note 1
Technical Articles 3
Informational 1
Video 1
LT Journal 1
Product Selector Card 2
Webcast 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC2970CUFD#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970CUFD#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970CUFD-1#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970CUFD-1#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970HUFD#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970HUFD#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970HUFD-1#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970HUFD-1#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970IUFD#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970IUFD#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970IUFD-1#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC2970IUFD-1#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Matched Resistors & Transistors 1 | ||
| LT5400 | RECOMMENDED FOR NEW DESIGNS | Quad Matched Resistor Network |
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
| Supervisory Circuits & Reset ICs 1 | ||
| LTC2933 | PRODUCTION | Programmable Hex Voltage Supervisor with EEPROM |
Tools & Simulations
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
Linduino code repository on GitHub and instructions on how to use the code.
Evaluation Kits
LTC2970 Demo Board | Dual Power Supply Monitor and Margining Controller [Requires DC590]
Resources
Software
LTC2970 Demo Board | Dual Power Supply Monitor and Margining Controller [Requires DC590]
Resources
Software
LTC2970 Linduino One Shield [Requires DC2026, Optional DC1613]
Resources
Software
LTC2970 Linduino One Shield [Requires DC2026, Optional DC1613]