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Analog Devices Inc. LTC2936IUFD#TRPBF
- Part No.:
- LTC2936IUFD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
LTC2936IUFD#TRPBF.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,510
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Product details
Overview
LTC2936IUFD#TRPBF from Analog Devices (formerly Linear Technology) is a programmable hex voltage supervisor IC with integrated EEPROM, I²C interface, and six comparator outputs. It monitors up to six independent supply rails (0.2V–5.8V), offers ±1% threshold accuracy, 7.5µs comparator response, and operates from 3.4V to 13.9V VPWR. Used in telecom power sequencing and server board management for precise fault detection and autonomous reset control.
For engineers reviewing the LTC2936IUFD#TRPBF datasheet, LTC2936IUFD#TRPBF pinout, LTC2936IUFD#TRPBF application, or LTC2936IUFD#TRPBF equivalent, key selection criteria include I²C-programmable UV/OV thresholds per channel, EEPROM-backed fault history, GPIO delay-on-release configuration, and –40°C to +85°C industrial temperature rating.
Technical Context
The LTC2936IUFD#TRPBF implements six independent analog comparators with user-selectable precision/low/medium input ranges, each supporting dual UV/OV trip points encoded via 8-bit DACs. Thresholds are set in 4mV (precision), 10mV (low), or 20mV (medium) steps, with guaranteed ±1% accuracy over temperature.
Its I²C/SMBus interface (up to 400kHz) enables full register access-including GPI/GPIO configuration, delay-on-release timing (1ms–1.64s), output polarity, and EEPROM store/restore-while internal 3.3V regulator (VDD33) supports mixed-supply system integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supervised Channels | 6 independent voltage inputs (V1–V6), each configurable for UV/OV detection |
| Threshold Accuracy | ±1% max over –40°C to +85°C in medium range (>3V), enabling tight system margin control |
| Comparator Response | 7.5µs typical with 20 LSB overdrive, ensuring fast fault reaction in high-speed power systems |
| I²C Interface | Standard-mode SMBus-compatible (10–400kHz), supporting 9 slave addresses via ASEL0/ASEL1 |
| Supply Range | VPWR = 3.4V to 13.9V; VDD33 = 3.3V regulated output (±2.3% over temp) |
| EEPROM | 10-year data retention, 10,000 write cycles, stores configuration and fault snapshot autonomously |
| Operating Temp | –40°C to +85°C (I-grade), qualified for industrial and telecom infrastructure environments |
Pinout & Package
Package: 24-lead (4mm × 5mm) plastic QFN (UFD) with exposed pad (Pin 25 = GND). RoHS-compliant, lead-free finish, tape-and-reel packaging (TRPBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1–V6 | Analog voltage inputs | Monitor supply rails; support 0.2–5.8V ranges with 4/10/20mV programming resolution |
| CMP1–CMP6 | Open-drain comparator outputs | Assert low on UV/OV fault; internally pulled up to VDD33 (15µA) |
| GPI1, GPI2 | Configurable general-purpose inputs | Selectable as MR, UVDIS, MARG, WP, or AUXC with 15µA pull-up |
| GPIO1–GPIO3 | Programmable input/output pins | Support open-drain/weak-pull-up output, ALERT function, or input mapping with delay-on-release |
| SCL, SDA | I²C serial interface | 400kHz max clock; require external pull-ups; support SMBus alert response (0x0C address) |
| VPWR, VDD33, GND | Power supply terminals | VPWR powers internal regulator (3.4–13.9V); VDD33 = 3.3V output (100nF bypass required) |
| ASEL0, ASEL1 | I²C address select | Set one of nine 7-bit slave addresses (0x50–0x5A) by tying to GND/VDD33 or floating |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-configurable supervision | Full parameter set (thresholds, delays, polarities) stored and restored without host intervention |
| Autonomous fault logging | Status/history registers + EEPROM backup capture first fault event for post-mortem analysis |
| Flexible GPIO behavior | Three GPIOs support input mapping, programmable delay-on-release (1ms–1.64s), and ALERT latching |
| Multi-range voltage monitoring | Three selectable input ranges per channel enable accurate supervision of sub-1V cores and 12V bias rails |
| Industrial temperature grade | –40°C to +85°C operation ensures reliability in telecom, server, and storage equipment environments |
Applications
| High-Availability Server Boards | Telecom Power Management |
|---|---|
Use Scenario: Monitoring 12V, 5V, 3.3V, 1.8V, 1.2V, and 1.0V rails on dual-CPU server motherboards with hot-swap capability. IC Role / Device Role / Timing Role: Centralized voltage supervisor providing synchronized reset assertion, fault isolation, and EEPROM-backed event logging. Use Value: Enables deterministic power-up sequencing and post-failure root-cause analysis via stored fault snapshot. | Use Scenario: Supervising DC-DC converter outputs in 48V-powered base station power modules with remote I²C configuration. IC Role / Device Role / Timing Role: Fault detector with programmable UV/OV thresholds and ALERT signaling to baseband controller over SMBus. Use Value: Reduces BOM count by replacing six discrete supervisors; supports field firmware updates to thresholds without hardware change. |
| Data Storage Controller Cards | Industrial Edge Computing Systems |
Use Scenario: Validating supply integrity across NVMe SSD controller, DRAM, flash memory, and PCIe interface rails in enterprise storage enclosures. IC Role / Device Role / Timing Role: Hex-channel supervisor with GPIO-mapped fault outputs driving FPGA reset and status LEDs. Use Value: Guarantees ±1% threshold accuracy to prevent false resets during transient load conditions on sensitive memory interfaces. | Use Scenario: Monitoring redundant 24V, 12V, 5V, and three sub-3.3V rails in fanless edge AI gateways deployed in factory environments. IC Role / Device Role / Timing Role: Industrial-grade voltage monitor with EEPROM persistence for configuration across power cycles and thermal stress. Use Value: Eliminates need for external nonvolatile storage; maintains fault history through extended temperature excursions (–40°C to +85°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6816ESE+ | Quad-channel supervisor; no EEPROM; fixed thresholds; 16-pin SOIC package | Lacks programmability and fault logging; suitable only for simple 4-rail systems without I²C control | Select when cost sensitivity outweighs configurability needs and rail count ≤4 |
| TPS3808G33DBVR | Single-channel supervisor; fixed 3.3V threshold; no I²C; SOT-23 package | No multi-rail capability or EEPROM; requires six units for equivalent coverage | Choose only for basic single-rail reset generation where space and simplicity are primary |
Compared with MAX6816ESE+ and TPS3808G33DBVR, the LTC2936IUFD#TRPBF delivers six-channel supervision, I²C programmability, EEPROM persistence, and industrial temperature range in a single 4mm×5mm QFN-reducing component count, enabling dynamic threshold tuning, and supporting failure forensics in complex embedded systems.
Availability
LTC2936IUFD#TRPBF is available at Aetrix Electronics and suitable for high-availability server boards, telecom power management, and data storage controller cards requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2936IUFD#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC2936IUFD#TRPBF belongs to ADI's precision power monitoring product line, engineered for mission-critical infrastructure where deterministic fault response, configuration flexibility, and long-term data integrity are essential.
FAQ
What is the operating temperature range of the LTC2936IUFD#TRPBF?
The LTC2936IUFD#TRPBF is rated for –40°C to +85°C operation (I-grade), making it suitable for industrial and telecom equipment deployed in thermally demanding environments. This range is validated per the manufacturer's qualification standards and applies to all electrical specifications unless otherwise noted in the datasheet.
Does the LTC2936IUFD#TRPBF require an external 3.3V supply?
No-the LTC2936IUFD#TRPBF integrates an internal 3.3V regulator (VDD33) powered from VPWR (3.4V–13.9V). A 100nF capacitor to GND is mandatory at VDD33. Alternatively, VPWR can be tied to VDD33 to disable the regulator and use an external 3.3V source.
How many voltage thresholds can be programmed per channel on the LTC2936IUFD#TRPBF?
Each of the six channels (V1–V6) supports two independently programmable thresholds-UV and OV-with 256 possible values per threshold. Resolution is 4mV (precision range), 10mV (low range), or 20mV (medium range), selected per channel.
Can the LTC2936IUFD#TRPBF generate an interrupt signal for host processors?
Yes-the LTC2936IUFD#TRPBF supports SMBus ALERT functionality. Any GPIO pin can be configured as an open-drain ALERT output that asserts low on voltage faults or GPI state changes, responding to the standard SMBus alert response address (0x0C).
Is EEPROM programming on the LTC2936IUFD#TRPBF persistent across power cycles?
Yes-configuration and fault history stored in the LTC2936IUFD#TRPBF's internal EEPROM retain data for ≥10 years and survive unlimited power cycles. The STORE_USER command writes volatile register contents to EEPROM; RESTORE_USER reloads them at startup or on demand.
LTC2936IUFD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 6
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x5)
LTC2936IUFD#TRPBF FAQ
1.How can I place an order for LTC2936IUFD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2936IUFD#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC2936IUFD#TRPBF reliable?
The price and inventory of LTC2936IUFD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2936IUFD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2936IUFD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2936IUFD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2936IUFD#TRPBF?
LTC2936IUFD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2936IUFD#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC2936IUFD#TRPBF?
For technical support, including LTC2936IUFD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2936IUFD#TRPBF requirements.
6.How does Aetrix verify that LTC2936IUFD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2936IUFD#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC2936IUFD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2936IUFD#TRPBF?
All LTC2936IUFD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2936IUFD#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC2936IUFD#TRPBF part is unused and in its original packaging.
Return procedure for LTC2936IUFD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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